Entries |
Document | Title | Date |
20080265136 | Position detecting device capable of improving detection accuracy - A position detecting device includes an optical position detecting element and a position information portion which are disposed so as to be opposed to each other. One of the optical position detecting element and the position information portion being mounted on the movable portion while the other thereof is mounted on an internal wall of a cabinet. The position information portion has a pattern where a signal level produced by the optical position detecting element changes in a continuous manner when the movable portion moves in a predetermined direction. The position detecting device carries out position detection of the movable portion in accordance with the signal level. | 10-30-2008 |
20080296474 | Photoelectric Sensor - A photoelectric sensor according to the present invention, performs a determination as to whether or not an object is present in a predetermined detection area and provides ( | 12-04-2008 |
20090026351 | SYSTEM AND METHOD FOR PERFORMING OPTICAL NAVIGATION ON GLASS-LIKE NAVIGATION SURFACES - A system and method for performing optical navigation addresses M×N photosensitive elements of an image sensor array to capture first frames of image data of a navigation surface when set to a first operational mode such that each of the first frames of image data includes M×N sampled signals, and addresses at most the M×N photosensitive elements of the image sensor array to capture second frames of image data of the navigation surface when set to a second operational mode such that each of said second frames of image data includes less than M×N sampled signals. | 01-29-2009 |
20090039235 | Method for determining location and movement of a moving object - The present invention discloses a method for determining location and movement of a moving object. One embodiment of the method tracks the movement of a target during medical imaging scanning and transmits the position shift to the medical imaging scanning device in real time. The method includes the steps of projecting structured light on the target, receiving the reflection of structured light, converting the received structured light into spatial positions, and transmitting the positional shift to the medical imaging scanning device. The method further includes the step of adjusting the medical imaging scanning device in response to the positional change to increase accuracy. | 02-12-2009 |
20090084936 | THROUGH HOLE FORMATION STATE DETECTING DEVICE AND ELECTRONIC TIMEPIECE USING THE DETECTING DEVICE - When a light emission element emits no light, a detected signal from a photodetection element is captured as an intensity of external light. Then, a threshold value is offset by the intensity of the external light. The offset threshold is then compared to a detected signal from the photodetection element when the light emission element emits light, thereby determining the presence of a through hole between the light emission element and the photodetection element through which hole light passes without being influenced by external light. | 04-02-2009 |
20090108175 | SYSTEM AND METHOD FOR PERFORMING OPTICAL NAVIGATION USING SCATTERED LIGHT - A system and method for performing optical navigation uses scattered light to produce frames of image data to estimate displacement with respect to a target surface. The scattered light is produced from an illumination beam of light emitted along a first optical axis onto the target surface. The illumination beam of light also produces a specularly reflected beam of light along a second optical axis. The scattered light about a third optical axis, which is offset by a predefined angle with respect to the second optical axis, is received at an image sensor array to produce the frames of image. | 04-30-2009 |
20090159780 | OPTICAL NAVIGATION APPARATUS AND METHOD FOR MAKING THE APPARATUS - An optical navigation apparatus and method for making the apparatus uses a light source and a sensor having an imaging array mounted on a leadframe and encapsulated in an optically transparent body structure. The optically transparent body structure is configured to include a prism-like feature to internally reflect light from the light source toward a target surface and an imaging lens feature to optically manipulate the light reflected from the target surface onto the imaging array of the sensor. | 06-25-2009 |
20100006742 | LARGE DEPTH OF FIELD LINE SCAN CAMERA - A system for imaging an object comprising a surface for receiving the object to be imaged and an imaging device. The imaging device comprises a housing and a fixed focusing optical device mounted to the housing, whereby the fixed focusing optics comprises a lens for focusing light reflected from the object. A plurality of independent linear imaging sensors are positioned in the housing at different distances from the fixed focusing lens so that a face of each of the plurality of independent linear imaging sensors is aligned parallel to the surface. A processor is coupled to the plurality of independent linear imaging sensors for receiving an output signal from each of the plurality of independent linear imaging sensors representative of the reflected light. The lens defines a plane parallel to the surface, and the plurality of independent linear imaging sensors are adapted to receive reflected light from the object. | 01-14-2010 |
20100012821 | Safety Device For A Press Brake Type Of Machine - A safety device for a machine, such as a press brake, has a light transmitter, a light receiver and an evaluation unit. The light receiver is coupled to a moving machine part such that it runs ahead of a front edge of the machine part during the operational movement. The light transmitter comprises a light source having a predominantly incoherent radiation for generating a light beam that runs substantially parallel to the edge and illuminates the light receiver. The light receiver has an image sensor with a plurality of pixels for recording a spatially resolved image of the light beam, and it has an imaging optics having a focal point and an aperture stop which is substantially arranged at the focal point. | 01-21-2010 |
20100044551 | Photoelectric encoder - The present invention relates to a photoelectric encoder including a scale having a grating (incremental pattern) of a predetermined pitch formed thereon and a light source (light-emitting element) and a light-receiving unit, which are relatively displaceable with respect to the scale, wherein light-receiving elements of the light-receiving unit output bright and dark signals of “N” phases, and the phases are detectedby fitting a sinusoidal wave function having a fixed period to the bright and dark signals of “N” phases, thereby reducing a position detection error resulting from stains on the scale and/or defects of the grating. | 02-25-2010 |
20100072348 | Optical encoder - In an optical encoder for measuring relative displacement, a scale | 03-25-2010 |
20100294915 | OCCUPANCY SENSOR AND OVERRIDE UNIT FOR PHOTOSENSOR-BASED CONTROL OF LOAD - An occupancy sensor is provided with a separable override unit which can selectively override the operation of the occupancy sensor at designated times and for selected time intervals. The occupancy sensor includes a light sensor for actuating the occupancy sensor and a light assembly when the ambient light is below a predetermined level and to deactivate the occupancy sensor when the ambient light is above a threshold level to prevent the light assembly from being actuated when the light level is sufficient to avoid the need for actuating the light assembly. The override unit is removably attached to the occupancy sensor and is provided with a light source, such as an LED. The override unit is coupled to the occupancy sensor to emit light to actuate the light sensor of the occupancy sensor, thereby controlling the operation of the occupancy sensor, such as by preventing the occupancy sensor from being actuated regardless of the light level in the surrounding areas. The occupancy sensor includes a cavity on a top surface for receiving the override unit. The light sensor of the occupancy sensor is positioned in the cavity. The LED on the override unit is on an end that is inserted into the cavity to align with the light sensor. A control unit is operatively connected to one or more override units for selectively controlling the normal operation of the occupancy sensor. | 11-25-2010 |
20110006190 | Devices and Methods for Adjusting Proximity Detectors - There is described portable electronic devices having one or more proximity sensors with adaptive capabilities that can help reduce power consumption. The proximity sensors of the portable electronic device in accordance with the present invention may be adjusted to operate in multiple and/or different modes. These modes are environmentally and contextually driven. An adaptive sensor is dynamically adjusted based on different criteria. In particular, adjustments are based on correlations of input signals from one or more sensors of the device, data signals received from the device's processor and/or external data signals received from an external source, which provide characterization values of environmental, contextual and/or ambient light characteristics. Adjustments are made to pulse power to affect the range of the sensor, pulse frequency, filtering of noise of the sensor input signal to attenuate interference and the spectrum of a proximity detector. | 01-13-2011 |
20110127407 | ROTOR TYPE ORIENTATION SENSOR - A rotor type orientation sensor includes a housing, a plurality of light emitters, two light receivers and a rotor. The housing has a circular tunnel and a plurality of first openings connecting to the tunnel and two second openings located on two sides of the first openings. The light emitters emit light into the tunnel through the first openings. The light receivers receive light from the tunnel through the second openings. The rotor is arranged in the tunnel, whereby while the rotor type orientation sensor is tilting, the rotor rotates toward the direction of gravity force, at least a portion of light emitted from the light emitters is blocked by the rotor, one of the light receivers is blocked by the rotor, the light receivers can respectively receive light with predetermined intensity and correspondingly output electric signals with predetermined strength. | 06-02-2011 |
20110168870 | OPTICALLY CONTROLLED MOTORIZED CONTROL DEVICE - Methods and apparatus are provided for a control device and control device operation. In one embodiment a control device includes a slider configured to support a control knob, a rack coupled to the slider and configured to linearly displace the slider. The rack including slots. The control device may further include a drive element configured to displace the rack and position the control knob, and an optical detection module configured to detect position of the control knob based on one or more optical signals detected relative to slots of the rack. According to another embodiment, a control console is provided including control devices. | 07-14-2011 |
20120097836 | Sun-Tracking System - A sun-locating apparatus includes a substrate, a mounting unit, a photo-detecting unit, an optical element and a cover. The mounting unit is provided on the substrate and formed with an upper aperture and a lower aperture in communication with the upper aperture. The photo-detecting unit is located in the lower aperture. The photo-detecting unit includes at least four photodiodes. The optical element is provided on the mounting unit for covering the upper aperture. The cover is provided on the substrate for covering the mounting unit, the photo-detecting unit and the optical element. | 04-26-2012 |
20120097837 | POSITION DETECTING DEVICE USING REFLECTION TYPE PHOTOSENSORS - There is provided a position detecting device using reflection type photosensors in which a position sensing of lens located not less than 1 mm apart from a sensor can be conducted. A pair of reflection type photosensors PR | 04-26-2012 |
20120104227 | COORDINATE RECOGNIZING APPARATUS AND CONTROL METHOD THEREFOR - According to one embodiment, a coordinate recognizing apparatus includes plural light emitting elements, plural light receiving elements, a memory, and a controller. The memory stores, concerning plural pairs of the light emitting elements and the light receiving elements set in advance, reference values used for determination of blocking of a light path. The controller performs, concerning the respective pairs, actions for collecting, plural times, a difference between first intensity indicated by a detection signal output from the light receiving element, which is a pair of the light emitting element, in a state in which the light emitting element is caused to emit light and second intensity indicated by a detection signal output from the light receiving element during non-light emission of the light emitting element and updating the reference value of the pair stored in the memory using a minimum of differences collected plural times. | 05-03-2012 |
20120138771 | REFLECTING OPTICAL DETECTING DEVICE AND ELECTRONIC APPARATUS PROVIDED WITH THE SAME - A reflective optical detecting device is for detecting movement of an object in a predetermined area. The reflective optical detecting device includes a light emitting unit, at least two optical detectors, and a comparing unit. The light emitting unit is used for illuminating the predetermined area. The optical detectors are disposed at opposite sides of the light emitting unit, and each of the optical detectors is associated with a respective detection region within the predetermined area for generating an output signal in response to light reflected from the object and detected thereby. The comparing unit is coupled to the optical detectors for receiving the output signal from each of the optical detectors, and is operable to output a comparison result according to the output signal of each of the optical detectors. The comparison result is to be used for determining the movement of the object. | 06-07-2012 |
20120153121 | OPTICAL POSITION DETECTION DEVICE AND APPARATUS WITH POSITION DETECTION FUNCTION - An optical position detection device that detects a position of a target object, includes plural detection light sources that output detection light, alight source drive unit that drives the plural detection light sources, a first light receiving unit that receives the detection light reflected by the target object located in an output space of the detection light, a compensation light source unit that outputs compensation light that enters outside the output space, a second light receiving unit that receives the compensation light, and a position detection unit that detects the position of the target object based on a difference between first received light intensity in the first light receiving unit and second received light intensity in the second light receiving unit. | 06-21-2012 |
20120160992 | SENSOR FOR DETERMINATION OF THE INCIDENCE ANGLE OF RADIATION AND METHOD FOR MEASUREMENT THE INCIDENCE ANGLE USING SUCH A SENSOR - A sensor and a corresponding method for the determination of the incidence angle of a radiation source are provided. The sensor has a diode assembly of avalanche photodiodes in a semiconductor layer and an application specific integrated circuit, a distance layer, an aperture structure located on the distance layer, and contacts for electrically connecting the sensor. The layers and structures are positioned directly on top of each other and match in their shape, size or thickness. | 06-28-2012 |
20120181418 | POSITION DETECTION SYSTEM, DISPLAY PANEL, AND DISPLAY DEVICE - Disclosed is a position detection system capable of detecting the position of a line-shaped object. From among two connected lines (E | 07-19-2012 |
20120235018 | OPTICAL TOUCH SYSTEM AND METHOD - An optical touch system and an optical touch method are provided. The optical touch system includes a scanning unit, a light source, a detector, a first light collecting unit and a second light collecting unit. The scanning unit provides an incident ray in a first direction. At least a portion of the energy of a reflected ray corresponding to the incident ray in a second direction is received by the first light collecting unit and collected to the detector. A retro-reflected ray corresponding to the incident ray in the first direction is received by the second light collecting unit and collected to the detector. | 09-20-2012 |
20120235019 | POSITION DETECTION SYSTEM AND PROJECTION DISPLAY SYSTEM - An optical position detection system includes a light output unit that outputs lights toward a first detection target and a second detection target, and a first light receiving unit that receives a first reflected light from the first detection target and a second light receiving unit that receives a second reflected light from the second detection target having different wavelengths, wherein the first detection target has a first reflection filter that reflects the first reflected light and the second detection target has a second reflection filter that reflects the second reflected light. | 09-20-2012 |
20120261548 | Two-Dimensional Position Sensing Systems and Sensors Therefor - Two dimensional position sensing system and sensors for use in such systems are disclosed. The sensors incorporate linear array sensors having sensor elements and an aperture plate. Some embodiments include a radiation source that directs radiation onto some of the sensor elements. Other embodiments including radiation blocking objects that block radiation from reaching some of sensor elements. The direction or position of the radiation source or radiation blocking object may be estimated from the radiation incident on the sensor elements. | 10-18-2012 |
20120280107 | OPTICAL GESTURE SENSOR USING A SINGLE ILLUMINATION SOURCE - A gesture sensing device includes a single light source and a multiple segmented single photo sensor, or an array of photo sensors, collectively referred to herein as segmented photo sensors. A light modifying structure relays reflected light from the light source onto different segments of the segmented photo sensors. The light modifying structure can be an optical lens structure or a mechanical structure. The different segments of the photo sensor sense reflected light and output corresponding sensed voltage signals. A control circuit receives and processes the sensed voltage signals to determine target motion relative to the segmented photo sensor. | 11-08-2012 |
20120292482 | MULTI-FUNCTION AIRBORNE SENSOR SYSTEM - Various embodiments provide a sensor system including a first optical sub-system having a first plurality of optical elements, and a second optical sub-system having a second plurality of optical elements including a first mirror. The second optical sub-system is configured to rotate about a first axis relative to the first optical sub-system and the first mirror is configured to rotate about a second axis substantially perpendicular to the first axis. The first axis and the second axis are arranged so as not to intersect each other so as to maximize a field of regard of the sensor system. | 11-22-2012 |
20120298840 | OPTICAL POSITION DETECTION APPARATUS AND DISPLAY APPARATUS HAVING POSITION DETECTION FUNCTION - An apparatus for optically detecting an object position includes: position detection light sources irradiating light onto the object; a light guide plate receiving the light and emitting it onto a detection area to form an intensity distribution in the detection area; a light detector having light receiving portions receiving the light reflected by the object; and a signal processing portion detecting the object position based on the intensity distribution, wherein light incident portions receiving the light and side portions except for the light incident portions are provided on outer periphery side portions of the light guide plate, a light emission surface emitting the light incident from the light incident portions toward the detection area is provided on a plane portion of the light guide plate, and at least a portion of the side portions is an anti-reflection surface. | 11-29-2012 |
20120312962 | OPTICAL SENSORS FOR DETECTING RELATIVE MOTION AND/OR POSITION AND METHODS AND SYSTEMS FOR USING SUCH OPTICAL SENSORS - A system according to an embodiment of the present invention includes one or more first optical sensors and one or more second optical sensors. The first optical sensor(s) each include a photodetector region and a plurality of first slats over the photodetector region. The second optical sensor(s) each include a photodetector region and a plurality of second slats over the photodetector region, wherein the second slats have a different configuration than the first slats. For example, the second slats can be orthogonal relative to the first slats. For another example, the first slats can slant in a first direction, and the second slats can slant in a second direction generally opposite the first direction. Currents produced by the first optical sensor(s) and the second optical sensor(s), which are indicative of light incident on the optical sensors, are useful for distinguishing between movement in at least two different directions. | 12-13-2012 |
20120318957 | OPTICAL TOUCH DEVICE - An optical touch device with a detecting area includes light guide components, a light source module, a light detecting component and an auxiliary light guide component. Each light guide component includes a first light emitting surface. The light guide components includes a first light guide component and a second light guide component. The auxiliary light guide component and the light detecting component are disposed between two neighboring ends of the first light guide component and the second light guide component, and the light detecting component includes a light detecting end. The auxiliary light guide component is positioned between the light detecting component and the detecting area and includes a first light incidence surface, a second light incidence surface and a second light emitting surface connected between the first light incidence surface and the second light incidence surface. The optical touch device can effectively avoid the blind zone problem. | 12-20-2012 |
20130001398 | OPTICAL DISTANCE-MEASURING DEVICE AND ELECTRONIC DEVICE - A lens frame, made from metal, retaining a light-emitting lens and a light-receiving lens is retained between a second mold and a third mold both of which are made from light-shielding resins. Anchors are formed by filling light-shielding resin for forming the third mold into fixing slots formed in an upper surface of the second mold and through holes formed in the lens frame. Since the lens frame is made from metal, thermal expansion of the lens frame is hardly caused by ambient temperature changes and self-heating. This causes little difference in the amount of change in difference between the lenses. Further, the lens frame is fixed with anchors between the second mold and the third mold. This suppresses the occurrence of sliding caused by difference in thermal expansion coefficient between the lens frame and the second and third molds. | 01-03-2013 |
20130020464 | MOTION SENSING SWITCH - The present invention relates to a motion sensing switch, and more particularly to a motion sensing switch which can sense external motions without any touching operation. The motion sensing switch of the present invention includes a base; a light receiving device which is disposed at the base; a plurality of light emitting devices which are disposed at the base so as to be symmetric with respect to the light receiving device; a control part which operates the light emitting devices, wherein the light emitting devices are disposed to be inclined in an opposite direction to the light receiving device, and the light receiving device senses light emitted from the light emitting devices and reflected by a reflection body and then transfers an operation signal to the control part, and the control part receives the operation signal and recognizes motion of the reflection body. | 01-24-2013 |
20130099092 | DEVICE AND METHOD FOR DETERMINING POSITION OF OBJECT - A method for determining the position of an object, includes: respectively detecting a light beam of a light emitting module emitted from a reference point and respectively reflected and retro-reflected by a stripped L-shaped reflecting mirror and retroreflector to obtain a first signal and a second signal; processing the first signal and the second signal to obtain a plurality of included angles A | 04-25-2013 |
20130126704 | PORTABLE COMPUTING DEVICE AND METHOD FOR ASSET MANAGEMENT IN A LOGISTICS SYSTEM - Systems, methods, and computer program products are provided for tracking one or more items. In one exemplary embodiment, there is provided a device for tracking one or more items. The device may include a plurality of sensors for detecting light, temperature, humidity, pressure, and acceleration. The device may also include a memory for storing information received from the plurality of sensors. | 05-23-2013 |
20130175428 | Optical Touch Panel Device for Construction Machine - An optical touch panel device for a construction machine capable of preventing the occurrence of a detection defect of a tactile contact point caused by external light falling upon a light-receiving element is provided with a planar panel with which tactile contact is made by an operator, light-emitting elements which emit light rays along the surface of the panel, and light-receiving elements which are provided to be paired with the light-emitting elements respectively so as to receive the light rays. The light-emitting elements are arranged so that the three light rays can intersect at each of a plurality of predetermined points upon a plane which is parallel to the panel, so that simultaneous interruption of at least two of the intersecting three light rays can be detected as tactile contact at a point of the surface of the panel facing the predetermined point. | 07-11-2013 |
20130214124 | LIGHT CURTAIN - The invention relates to a light curtain for detecting objects within a monitored region. The light curtain comprises an arrangement of transmitters that emit light rays, an arrangement of receivers for receiving the light rays, and an evaluation unit. Object detection signals are generated in the evaluation unit in dependence on the receiving signals present at the outputs of the receivers. The light curtain is divided into sub-regions containing a specified number of transmitters and receivers. The individual sub-regions can be adjusted individually through separate parameter settings. A separate evaluation is realized in the evaluation unit for the individual sub-regions. | 08-22-2013 |
20130240707 | Modular Position Sensing Systems and Methods - Various embodiments of a modular position sensing system and method for using the system are described. The system may be used to detect the position of one or more radiation blocking objects in a sensing region. The sensing region may overlie a surface such as a wall, whiteboard, display screen or a modular display screen. When used with a modular display screen, the system may include system modules dimensions to correspond to display modules used to form the modular display screen. | 09-19-2013 |
20130264462 | OPTICAL TOUCH APPARATUS AND OPTICAL SENSOR MODULE THEREOF - An optical touch apparatus includes a sensing region, a first and a second light emitting assemblies and a first and a second light sensor devices. The first and second light emitting assemblies are disposed in an edge of the sensing region. The first and second light emitting assemblies include a light emitting device and an optical cover including a light incidence, light emission and reflection parts, which defines a space for accommodating the light emitting device. The light from the light emitting device is emitted into and out from the optical cover sequentially through the light incidence and emission parts. The reflection part is connected between the light incidence and emission parts and for reflecting the light from the light emitting device. The first and second light sensor devices overlay the light emitting devices of the first and second light emitting assemblies, respectively. An optical sensor module is also provided. | 10-10-2013 |
20130270418 | LARGE-AREA TRANSMISSIVE TYPE OPTICAL IMAGE MODULATOR AND METHOD OF MANUFACTURING THE SAME AND OPTICAL APPARATUS INCLUDING TRANSMISSIVE TYPE OPTICAL IMAGE MODULATOR - A large-area transmissive type optical image modulator, a method of manufacturing the same, and an optical apparatus including the transmissive type optical image modulator are provided. The large-area transmissive type optical image modulator includes: a base substrate; a first expitaxial layer formed on the base substrate; a second expitaxial layer formed on the first expitaxial layer; a first electrode formed on the first expitaxial layer and spaced apart from the second expitaxial layer; a second electrode formed on the second expitaxial layer; and a transparent substrate covering the second expitaxial layer and the second electrode, wherein the base substrate includes a through hole corresponding to a light emitting area, and the first expitaxial layer may include an n-type or p-type doping material. | 10-17-2013 |
20130320191 | OPTICAL DETECTING APPARATUS - An optical detecting apparatus, which comprises: a detecting surface; a first light source, for providing light parallel to the detecting surface; an image sensor, for detecting an object close to the detecting surface, to generate object image data; and an object location determining apparatus, for computing location information of the object according to the object image. | 12-05-2013 |
20130334398 | MOTION AND SIMPLE GESTURE DETECTION USING MULTIPLE PHOTODETECTOR SEGMENTS - An optoelectronics apparatus selectively drives a light source, and includes four electrically isolated photodetector (PD) segments that detect light that has reflected off an object. Each of the four PD segments produces a corresponding signal, referred to as signals A, B, C and D, indicative of the light detected by the respective PD segment. Circuitry is used to produce a first motion signal indicative of a sum of the signals A plus B minus a sum of the signals C plus D, i.e., the first motion signal is indicative of (A+B)−(C+D). Further circuitry produces a second motion signal indicative of (B+C)−(A+D). Additional circuitry produces a signal and/or data that is indicative of a direction and/or rate of motion of an object, in dependence on the first and second motion signals. | 12-19-2013 |
20140014812 | Systems and Methods for Sensing and Tracking Radiation Blocking Objects on a Surface - Several system for tracking one or more radiation blocking objects on a surface are disclosed. At least three radiation sensors are provided adjacent the surface and a plurality of radiation sources as provided adjacent the surface. Radiation from at least some of the radiation sources can reach each of the radiation sensors. One or more radiation blocking objects on the surface attenuate radiation from one or more radiation sources from reaching each of the sensors. One or more polygons is calculated based on the attenuated radiation sources and the positions of the sensors. The position of the one or more radiation blocking objects is estimated and may be tracked based on the polygons. | 01-16-2014 |
20140034807 | COORDINATE INPUT APPARATUS, HOUSING UNIT, CONTROL METHOD THEREOF, AND COMPUTER-READABLE STORAGE MEDIUM - The sensor unit of each of a first bar housing unit and second bar housing unit is moved. The moving amount is measured and stored. The distribution of a light amount received by the light receiving unit of the sensor unit of each of the first bar housing unit and second bar housing unit is detected, and whether the moving amount is appropriate is determined based on the detection result. A calculation value used when the coordinates of the pointed position in the coordinate input effective region are calculated based on variations of the light amount distribution is corrected by using the moving amount stored when it is determined that the moving amount is appropriate. | 02-06-2014 |
20140048681 | OBJECT TRACKING DEVICE AND OPERATING METHOD THEREOF - An optical tracking device includes a light source, an image sensor and a processing unit. The light source emits light at a lighting frequency. The image sensor outputs an operating image when the light source is being turned on and outputs a background image when the light source is being turned off. The processing unit is configured to obtain background information from the background image, calculate a differential image of the operating image and the background image, obtain object information from the differential image and compare the background information and the object information thereby removing background noise. | 02-20-2014 |
20140061432 | COORDINATE DETECTOR - A coordinate detector includes a light output part, a light detection part, a first guide part, and a second guide part. The light output part emits light. The light detection part outputs a detection signal according to the amount of entering light. The light output part and the light detection part are provided in an area around a display part on a side closer to a first surface of the display part than to its second surface facing away from the first surface. The first guide part guides light emitted from the light output part toward a direction along the first surface. The second guide part guides, toward the light detection part, light exiting from the first guide part and passing over the first surface. | 03-06-2014 |
20140070073 | TWO-DIMENSIONAL ABSOLUTE ENCODER AND SCALE - A two-dimensional absolute encoder includes a scale having marks arranged thereon along first and second directions different from each other, a detector configured to perform first detection that detects rows of a first number of marks arranged in the first direction and second detection that detects rows of a second number of marks arranged in the second direction, and a processor configured to determine absolute positions of the scale in the first and second directions based on outputs from the detector. Each of the marks has one of different characteristic values each corresponding to a combination of a quantized first code for indicating a position in the first direction and a quantized second code for indicating a position in the second direction, the number of the different characteristic values being smaller than the number of the combinations. | 03-13-2014 |
20140084134 | MINIATURIZED OPTICAL SYSTEM, LIGHT SOURCE MODULE AND PORTABLE ELECTRONIC DEVICE - There is provided a miniaturized optical system including a protection cover, a light source, an image sensor and at least one interference film. The protection cover has a first surface and a second surface. The light source and the image sensor are disposed opposite to the first surface of the protection cover. The interference film is disposed between the light source and the protection cover to allow the light source to form a predetermined light shape in front of the second surface of the protection cover and/or disposed between the image sensor and the protection cover to allow the image sensor to receive light of a predetermined range in front of the second surface of the protection cover. | 03-27-2014 |
20140091199 | VARIABLE RATE CHEMICAL MANAGEMENT FOR AGRICULTURAL LANDSCAPES WITH NUTRITION BOOST - An apparatus configured for dispensing nutrients is provided. The apparatus includes a dispensing system configured for dispensing the nutrients, a variable rate controller operatively connected to the dispensing system and configured to control dispensement of the nutrients from the dispensing system. The variable rate controller is programmed to determine a primary nutrient application rate and an additional nutrient boost rate. | 04-03-2014 |
20140091200 | Optical Touch Sensitive Apparatus and Image Capturing Apparatus - An optical touch sensitive apparatus includes a substrate, a plurality of image capturing lens modules, a light detecting unit, and an optical path switching unit. The substrate has an operation surface. Each of the image capturing lens modules has a light input end and a light output end. The light input end is located at the edge of the substrate for capturing optical information in an objective space above the operation surface. The light output end is for outputting the optical information. The optical path switching unit is located among the light output ends and the light detecting unit for transmitting the optical information outputted from at least one of the light output ends to the light detecting unit. In addition, an image capturing apparatus is provided. | 04-03-2014 |
20140097327 | FINGER NAVIGATION MODULE WITH INTEGRATED AMBIENT LIGHT SENSOR - An optical finger navigation module includes a light source configured for emitting light in a first spectrum; a cover housing disposed above the light source, the cover housing including a window plate that is configured to transmit light in at least the first spectrum, and a light guiding structure that is configured to transmit light in at least a second spectrum; a first light sensor configured to sense light in the first spectrum originally emitted by the light source, reflected by an object, and then transmitted through the window plate; a second light sensor configured to sense light in the second spectrum transmitted through the light guiding structure or the window plate; and a substrate. The light source, the cover housing, the first light sensor and the second light sensor are coupled and mounted to the substrate. | 04-10-2014 |
20140110563 | POSITION DETECTING APPARATUS AND METHOD FOR CONTROLLING THE SAME - A position detecting apparatus includes: a driver that moves a moving body having a lens mounted thereon, a first sensor and a second sensor respectively mounted on the moving body, a displacement detection pattern unit that reflects light emitted by the first or second sensors, and a controller that controls the first sensor and the second sensor to be alternately turned on to emit light, and if the light reflected by the displacement detection pattern unit is sensed, the controller detects a position of the lens based on sensing results, where the controller determines a period in which the first sensor is turned on and a period in which the second sensor is turned on based on an intersection point of a signal waveform sensed by the first sensor and a signal waveform sensed by the second sensor. Accordingly, power consumption of the position detecting apparatus can be reduced. | 04-24-2014 |
20140110564 | OPTICAL NAVIGATION DEVICE - An optical navigation device for use with mobile telephones and the like is disclosed, which has a reduced height as compared with current designs. The navigation device comprises a laser such as a VCSEL laser, an exposed user surface and two other surfaces that provide for total internal reflection of the incident laser beam. The surfaces are constructed with shallower than normal angles, preserving the basic functionality of the device while reducing the height. | 04-24-2014 |
20140124647 | SENSOR ARRAY AND METHOD OF CONTROLLING SENSING DEVICE AND RELATED ELECTRONIC DEVICE - There is provided a method of reducing power consumption of a gesture sensor. The method utilizes an auxiliary sensing device to detect whether an object exists in a sensing covering range of the gesture sensor, thereby determining operating states and power consumptions of the gesture sensor and the auxiliary sensing device. If the auxiliary sensing device does not detect that the object exists in the sensing covering range of the gesture sensor or the object moves, the gesture sensor is allowed to be in a low power consumption operating state, thereby reducing the power consumption. | 05-08-2014 |
20140131550 | OPTICAL TOUCH DEVICE AND TOUCH CONTROL METHOD THEREOF - An optical touch device and a touch control method thereof are provided. The touch control method is adopted by an optical touch device, including: sensing, by a photoelectric sensor, a presence of an object at a touch location on a touch surface; sensing, by a pressure sensor, a pressure; and when the pressure sensor senses the pressure, determining, by a processor, that a touch event has occurred at the touch location. | 05-15-2014 |
20140131551 | PROXIMITY SENSOR AND OPERATING METHOD THEREOF - A proximity sensor includes a proximity sensing unit and a signal processing unit. The proximity sensing unit detects whether an object to be detected is close by to obtain a measured value. The signal processing unit compares the measured value with an initial noise cross-talk value to determine whether the initial noise cross-talk value should be updated. If the determined result of the signal processing unit is no, the signal processing unit compares the measured value with a default value to determine whether the object to be detected is located in a detection range of the proximity sensing unit. | 05-15-2014 |
20140138519 | IMAGE-SENSING APPARATUS - An image-sensing apparatus is provided. The image-sensing apparatus includes: an optical filter array including a two-band passing filter and an infrared filter; an RGB pixel array placed below the two-band passing filter; and a TOF pixel array adjacent to the RGB pixel array and placed below the two-band passing filter and the infrared filter, wherein a combination of the two-band passing filter and the infrared passing filter permits only the incident light in the infrared region to pass to the ToF pixel array. | 05-22-2014 |
20140145066 | MULTI-MODE STYLUS AND DIGITIZER SYSTEM - A digitizer system includes a substrate with indicia that uniquely define local areas of the substrate. A multi-mode sensor device, such as a stylus, may sense radiation emitted from the features, and selectively switch to a mode of operation that can sense the indicia and determine therefrom the location of the stylus relative to the substrate. | 05-29-2014 |
20140166853 | OPTICAL SENSING APPARATUS AND METHOD FOR DETECTING OBJECT NEAR OPTICAL SENSING APPARATUS - An optical sensing apparatus includes M light emitting devices, N sensing devices, a control circuit and a processing circuit. M is a positive integer, and N is an integer greater than or equal to 3. The control circuit is arranged for controlling activation and deactivation of the M light emitting devices, and controlling each sensing device to detect a reflected signal reflected from an object when a corresponding light emitting device is activated in order to generate a sensing result corresponding to the sensing device. The N sensing devices generate N sensing results in response to the M light emitting devices. The processing circuit is arranged for calculating position information of the object according to at least the N sensing results and N sensing positions of the N sensing devices, wherein the N sensing positions define at least one geometric plane. | 06-19-2014 |
20140203167 | OPTICAL SENSING INTERFACE WITH MODULATION GRATINGS - This disclosure provides implementations of systems, devices, components, methods, and techniques for producing an optical sensing interface capable of detecting touches or gestures. In one aspect, an apparatus includes a light source, a photo-detector, and a substrate. The apparatus includes an emitting waveguide that extends at least partially over the substrate and that is configured to propagate light from the light source to one or more corresponding emitting portions. Each emitting portion is capable of emitting at least a portion of the light outwards from a plane defining the substrate. The apparatus further includes a sensing waveguide that extends at least partially over the substrate and that includes one or more sensing portions. Each sensing portion is arranged proximate an emitting portion and is capable of receiving light scattered by an object over the corresponding emitting portion. The sensing waveguide is configured to propagate the received light to the photo-detector. | 07-24-2014 |
20140209783 | OPTICAL POINTING DEVICE AND DETECTING METHOD THEREOF - An optical pointing device for detecting the direction of the user's finger is provided. The optical pointing device comprises a cover, a light source and a sensor. The cover comprises a press portion with a first surface and a second surface opposite the first surface, as well as a side wall extending downwards from the periphery of the second surface. The light source projects a main beam onto the press portion of the cover. The main beam then forms a first beam passing through the press portion and a second beam reflected by the second surface. The sensor is adapted to receive the second beam reflected by the second surface, and detect the second beam by an algorithm to output the first displacement position. In addition, the light source and the sensor are covered by the cover, while the side wall is a flexible side wall. | 07-31-2014 |
20140231619 | OPTICAL ANALYSIS DEVICE, OPTICAL ANALYSIS METHOD AND COMPUTER PROGRAM FOR OPTICAL ANALYSIS USING SINGLE LIGHT-EMITTING PARTICLE DETECTION - There is provided a way of enabling the discrimination or identification of the kind of a light-emitting particle corresponding to each pulse form signal in the scanning molecule counting method using the optical measurement by the confocal or multiphoton microscope. In the inventive technique, the position of a light detection region in a sample solution periodically along a predetermined route is moved in measuring the light intensity from the light detection region; and a signal of light from a light-emitting particle is detected individually. Then, an index value indicating a translational diffusional characteristic of one light-emitting particle in a plane perpendicular to the moving direction of the light detection region is determined based upon intensity values of signals of light of the same light-emitting particle for identifying a light-emitting particle. | 08-21-2014 |
20140239151 | SELF-POWERED OPTICAL DETECTOR FOR MECHANICAL GAUGE INSTRUMENTS - An embodiment of the present invention includes a display device including a mechanical indicator, a reference photodetector, a measurement photodetector, and an opaque shroud. The opaque shroud is connected to the mechanical indicator to variably cover the measurement photodetector based on a position of the mechanical indicator. The opaque shroud does not cover the reference photodetector. | 08-28-2014 |
20140312206 | PROXIMITY SENSOR SYSTEMS AND METHODS OF OPERATING SAME - Techniques for using photo detectors as tunable proximity sensors for detection of target objects and ascertaining their distance from the proximity sensors are disclosed. In one embodiment, the techniques may be realized as a proximity sensor system including a photo detector having a first doped region, a gate, a second doped region and a light absorbing region, a control circuitry for generating a plurality of control signals to be applied to the photo detector, and a signal detector to detect an output signal from the photo detector. | 10-23-2014 |
20140319320 | OCCUPANCY SENSOR DEVICE - The invention relates to an integrated light and occupancy sensor device having an overall angular field of view, including an array of modified LED elements; a segmented filtering aperture means having a slit aperture defined by a slit length and a slit width that is significantly smaller than the array length, the slit aperture means being positioned at a distance away from the linear array and so oriented that the slit length crosses the array in a transverse direction; and a processor being operably connected to said array to process light data values corresponding to the light signals, the processor operable in first and second modes. | 10-30-2014 |
20140346319 | VARIABLE RATE CHEMICAL MANAGEMENT FOR AGRICULTURAL LANDSCAPES USING MULTIFORM GROWTH RESPONSE FUNCTION - An apparatus configured for dispensing nutrients includes a dispensing system configured for dispensing the nutrients for a particular plant hybrid or plant variety and a variable rate controller operatively connected to the dispensing system and configured to control dispensement of the nutrients from the dispensing system. The variable rate controller may be programmed to use a plant growth response function for the particular plant hybrid or plant variety and adjust the dispensement of the nutrients from the dispensing system based on the plant growth response function and further programmed to use a pre-determined plug value for the particular plant hybrid or plant variety for initial calibration. | 11-27-2014 |
20140353467 | OBJECT LOCATION DETERMINATION - A system for determining a location of an object on a planar surface includes a time-of-flight sensor having sensing elements that provide a field of view for the time-of-flight sensor. The system also includes a mirror attached to the shaft of a motor for reflecting the field of view of the time-of-flight sensor across the planar surface. The system also includes electrical circuitry configured to receive range images from the time-of-flight sensor as the field of view is swept across the planar surface and process the range images to identify the object in at least one of the range images. The electrical circuitry is also configured to calculate a location of the object on the planar surface relative to the motor based on an angle of the shaft associated with the at least one range image and based on a distance of the object from time-of-flight sensor. | 12-04-2014 |
20150060641 | OPTICAL TOUCH DEVICE - An optical touch device defining a sensing area includes two scanning modules and a light detecting element. The scanning modules respectively disposed on terminals of a first side of the sensing area include light-emitting elements and reflective elements. The light-emitting element is used for emitting a detective light along a first pathway and the reflective element has a reflective surface for reflecting the detective light such that the detective light is emitted along a second pathway. There is an angle forming between the first side and the second pathway and the reflective surface changes a direction of the second pathway such that the detective light scans in the sensing area. The detective light has a first intensity and a second intensity, in which the first intensity is less than the second intensity. The light detecting element is used for receiving a detective light reflected by an object. | 03-05-2015 |
20150083891 | TOUCH-SENSITIVE APPARATUS WITH IMPROVED SPATIAL RESOLUTION - A touch-sensitive apparatus is configured to define a touch surface on a panel by propagating diverging energy beams (e.g. of radiation) across the touch surface inside the panel. Two rows ( | 03-26-2015 |
20150115130 | OPTICAL TOUCH SYSTEM, METHOD OF TOUCH DETECTION, AND COMPUTER PROGRAM PRODUCT - An optical touch system is provided. At least one light source is disposed at a side of a base plane. A first optical sensor and a second optical sensor detect a space in front of the base plane to generate a first signal and a second signal. When two groups of objects approach to or touch the base plane, a processing unit determines at least one first portion of the first signal corresponding to the two groups of the objects and at least one second portion of the second signal corresponding to the two groups of the objects, and converts the at least one first portion and the at least one second portion into a plurality of touch regions, and determines group transformations according to positions corresponding to at least part of touch regions. Additionally, a method of touch detection, and a computer program product are also provided. | 04-30-2015 |
20150136946 | OPTICAL TOUCH APPARATUS AND TOUCH METHOD THEREOF - An optical touch apparatus and a touch method thereof are provided. A plurality of light sensing units are disposed between a first scanning light source and a second scanning light source, wherein the light sensing units, the first scanning light source and the second scanning light source are disposed at a same side of a touch surface. A touch position of an input tool is determined according to an intensity of a scattered light generated by an input tool and sensed by the light sensing units and generated when a first scanning beam and a second scanning beam scan the input tool. | 05-21-2015 |
20150136947 | COMPACT OPTICAL TRACKER - An optical tracker is provided herein. The tracker may include at least two optical tracker sensors, facing at least partially each other. Each optical tracker sensor may include: a pixel array sensor configured to generate a pixel-by-pixel stream of values representing a scene; at least one visual indicator physically coupled to said pixel array sensor; and an integrated circuit (IC) physically coupled to said at least one pixel array sensor, and configured to: receive said pixel-by-pixel stream of values; and apply a binary large object (BLOB) analysis to said stream, to yield BLOB parameters indicative of the at least one visual indicator present in the scene in a single pass of the pixels representing the scene; and a computer processor configured to receive said BLOB parameters and calculate a relative position and/or orientation, or a partial data thereof, of the at least two optical tracker sensors. | 05-21-2015 |
20150144767 | METHOD FOR EVALUATING POSITION AND MOTION USING TIME OF FLIGHT DETECTORS - A method is for evaluating a coverage factor of a photon emission cone of a time of flight sensor. The method may include the steps of assigning a reference curve to the sensory providing a photon flux intensity as a function of time of flight; and acquiring a time of flight and a corresponding flux intensity with the sensor. The method may also include reading the intensity provided by the reference curve for the acquired time of flight, and providing an indication of the coverage factor based on the ratio between the acquired intensity and the read intensity. | 05-28-2015 |
20150293224 | SOLID STATE OPTICAL PHASED ARRAY LIDAR AND METHOD OF USING SAME - A lidar-based apparatus and method are used for the solid state steering of laser beams using Photonic Integrated Circuits. Integrated optic design and fabrication micro- and nanotechnologies are used for the production of chip-scale optical splitters that distribute an optical signal from a laser essentially uniformly to an array of pixels, said pixels comprising tunable optical delay lines and optical antennas. Said antennas achieve out-of-plane coupling of light. | 10-15-2015 |
20150323670 | OPTICAL SENSOR - In order to provide an optical sensor that can accurately sense a direction of movement of an object to be sensed even in a case where disturbance light is present, an optical sensor of the present invention includes: a light-emitting element; a circularly-segmented light-receiving element group (RDPD), including light-receiving elements circularly provided at edges of a region on which reflected light from an object to be sensed reflecting light emitted by the light-emitting element is incident, for generating respective photocurrents upon receiving the reflected light; and a gesture circuit section for sensing a direction of movement of the object to be sensed upon receiving the photocurrents generated by the light-receiving elements included in the circularly-segmented light-receiving element group (RDPD). | 11-12-2015 |
20150323671 | APPARATUS, SYSTEM AND METHOD FOR DETECTING A POSITION OF A MOVABLE OBJECT IN A DEVICE AND USING THE SAME FOR CONTROLLING THE DEVICE - An apparatus, a system and a method for detecting position of a movable object in a device and using the same for controlling the device. A distance and/or an intensity of emitted light may be measured by using a sensor to emit light and detect light to determine the location of the movable object. The movable element absorbs emitted light from the sensor. The sensor determines and/or measures an intensity of the emitted light from the sensor which is not absorbed by the movable object. The intensity of emitted light is related to the position of the movable object in the device. A microprocessor may determine the position of the movable object based on the intensity of emitted light detected by the sensor. The position of a rotating object on a crankshaft in an engine may be detected. | 11-12-2015 |
20150331082 | Apparatus and Methods for Locating Source Of and Analyzing Electromagnetic Radiation - Method and apparatus for determining direction from which electromagnetic radiation originates and spectral characteristics of the radiation are provided. Lenses, diffraction gratings, which may be present on the surface of the lenses, and mirrors direct radiation to a photodetector. Lens and grating parameters, along with the location, size, relative spacing and orientation of diffracted orders of radiation detected by the photodetector are used for determining direction from which the radiation originates. | 11-19-2015 |
20150338548 | TRACKING SYSTEM AND METHOD FOR USE IN SURVEYING AMUSEMENT PARK EQUIPMENT - A dynamic signal to noise ratio tracking system enables detection and tracking of amusement park equipment within the field of view of the tracking system. The tracking system may include an emitter configured to emit electromagnetic radiation within an area, a detector configured to detect electromagnetic radiation reflected back from vehicles within the area, and a control unit configured to evaluate signals from the detector to survey the amusement park equipment to determine whether the equipment has degraded or shifted. | 11-26-2015 |
20150346909 | MOTION TRAJECTORY CAPTURING DEVICE AND MOTION TRAJECTORY CAPTURING MODULE THEREOF - A motion trajectory capturing module includes a light-emitting element, a light-splitting element, a first light-reflecting element, a second light-reflecting element, a lens assembly and a motion trajectory sensing element, characterized in that: a projection light beam generated by the light-emitting element is reflected by the light-splitting element and the first light-reflecting element in sequence to form an illumination light beam passing through a light-transmitting element and projected onto an object moving on the light-transmitting element, the illumination light beam is reflected by the object to form an image light beam reflected by the first light-reflecting element, the image light beam sequentially passes through the light-splitting element and the lens assembly and is projected onto the motion trajectory sensing element through the second light-reflecting element, and the motion trajectory sensing element receives the image light beam to obtain a motion trajectory of the object moving on the light-transmitting element. | 12-03-2015 |
20150362594 | SYSTEMS AND METHODS FOR OPTICAL PROXIMITY DETECTION WITH MULTIPLE FIELD OF VIEWS - An optical proximity detector includes a plurality photodetectors (PDs) and a winner-take-all (WTA) circuit. Each of the PDs has a respective field of view (FOV) and produces a respective analog current detection signal indicative of light incident on and detected by the PD. In an embodiment, the WTA circuit includes a comparator and a multiplexor (MUX). The comparator compares the analog current detection signals produced by the PDs and produces a selection signal in dependence thereon. The MUX receives the analog current detection signals produced by the PDs and outputs one of the analog current detection signals in dependence on the selection signal produced by the comparator. Circuitry, which is shared by the PDs, produces a digital detection signal corresponding to the one of the analog current detection signals output by the MUX. Such design can be used to reduce power consumption, size and cost of an optical proximity detector. | 12-17-2015 |
20160025855 | PROXIMITY SENSOR MODULE INCLUDING TIME-OF-FLIGHT SENSOR - The present disclosure describes proximity sensor modules that include a time-of-flight (TOF) sensor. The module can include a plurality of chambers corresponding, respectively, to a light emission channel and a light detection channel. The channels can be optically separated from one another such that light from a light emitter element in the light emission chamber does not impinge directly on light sensitive elements of the TOF sensor in the light detection chamber. To achieve a module with a relatively small footprint, some parts of the TOF sensor can be located within the light emission chamber. | 01-28-2016 |
20160034053 | OPTICAL TOUCH SYSTEM AND OPTICAL TOUCH METHOD - An optical touch system includes two touch devices, two optical sensing devices, and a processing module. When the optical touch system is in use according to an optical touch method, the two touch device are used to touch a touch surface and emit first light and second light with different wavelengths respectively. The two optical sensing devices are disposed at the circumference of the touch surface and individually receive the first light and the second light to generate an optical sensing signal. The processing module receives the two optical sensing signals and determines a touch position on the touch surface for each touch device according to the two optical sensing signals. Therefore, the touching by each touch device is independent, so the optical touch system and the optical touch method can allow touch operations for different purposes to be performed simultaneously. | 02-04-2016 |
20160047911 | SYSTEM AND METHOD FOR ARRAY LATERAL EFFECT POSITION SENSING DETECTOR - A system and method includes an array position sensing detector. The array position sensing detector includes a lateral effect position sensing detector element and a summing amplifier. The lateral effect position sensing detector element produces an output coupled with the summing amplifier through a switch. | 02-18-2016 |
20160114603 | PAPER POSITION DETECTOR - Paper has a detection pattern having a length in a main scanning direction, the length becoming shorter from upstream to downstream along a paper feeding direction. An image sensor detects the detection pattern and outputs a detection signal including data in the main scanning direction (length y). A control unit calculates a position of a vertex of the detection pattern, by using the detection signal, a feeding speed, an angle being half of the vertex angle of the pattern, and an imaging time, so as to correct an image forming position on the back side to coincide with an image on the front side. The detection signal from the sensor with a low operation speed is processed according to a method utilizing a shape feature and the like of the detection pattern, thereby precisely detecting the position of the paper in the feeding direction. | 04-28-2016 |
20160187196 | SENSOR FOR MOTION INFORMATION, ILLUMINATION INFORMATION AND PROXIMITY INFORMATION, AND OPERATING METHOD OF CENTRAL PROCESSING UNIT (CPU) USING THE SENSOR - A sensor configured for sensing motion information, illumination information, and proximity information is provided. The sensor includes a light sensing module configured to sense a change in an intensity of light, a filtering module configured to filter light incident to the light sensing module by using a plurality of filters, and a processor configured to process information associated with an intensity of light passing through the filters. | 06-30-2016 |
20170235013 | SENSOR FOR DISPENSING SYSTEM | 08-17-2017 |
20190146086 | OPTICAL SENSOR AND ELECTRONIC DEVICE | 05-16-2019 |