Patent application number | Description | Published |
20090020684 | Illumination apparatus and optical radiation control method thereof - The present invention discloses an illumination apparatus and an optical radiation control method. The illumination apparatus includes at least one light emitting module, an optical detector, a temperature calculating module and a control module. These emitting modules are for producing a light beam and the control module is for generating a PWM signal to drive the emitting modules. The optical detector electrically connected to the control module is for detecting the optical radiation of light emitted from the light modules. The temperature calculating module is for calculating the temperature of the illumination apparatus based on the PWM signal and a predetermined PWM width. The control module can adjust the optical radiation of light emitted from the light modules based on the temperature and the detected data of the optical detector. | 01-22-2009 |
20090121641 | Illumination system and illumination control method - This invention discloses an illumination method and an illumination control method. An embodiment of the illumination system includes two light detection modules for detecting a light produced by a light emitting diode and an ambient light, calculating a reference spectral distribution based on a detection result of the ambient light, comparing the detection result of the light emitting diode with the reference spectral distribution, and driving the illumination module to emit a light matching with the reference spectral distribution based on a comparison result. Another embodiment of the illumination system includes a light detection module for periodically switching the light emitting diode to emit light and stop emitting light. When the light emitting diode stops an illumination period, the light detection module detects an ambient light, and when the light emitting diode continues an illumination period, the light detection module detects a light produced by the light emitting diode. | 05-14-2009 |
20090237423 | Display apparatus of adjusting gamma and brightness based on ambient light and its display adjustment method - This invention discloses a display apparatus capable of adjusting gamma and brightness based on ambient light and its display adjustment method. The display apparatus is adjusted to display an image output signal based on an image input signal and the correlated color temperature and brightness of an ambient light. The display apparatus includes a plurality of light sensing circuits, a memory unit, an image processing module, and a display module. The light sensing circuit senses the ambient light to produce a digital ambient color temperature index value. The memory unit stores a lookup table of brightness expression rates and gamma adjustment parameters corresponding to different color temperature index values. The image processing module produces a gamma adjustment parameter by a lookup table based on the color temperature index value and generates the gamma expression rate of the image input signal. The image processing module adjusts the image input signal to generate the image output signal based on the gamma adjustment parameter. The display module displays the image output signal. | 09-24-2009 |
20100040377 | Optical sensing module based on pulse width modulation signal and method thereof - A optical sensing module based on signals having pulse width modulation and a method thereof are disclosed for sensing a light source and providing an output signal having pulse width modulation. The optical sensing module comprises an optical sensor, a signal processing unit, and a duty cycle modulation unit. The signal processing unit provides a modulation control signal based on a sensing signal generated by sensing the light source from the optical sensor in conjunction with a gain control signal. The duty cycle modulation unit modulates the duty cycle of the pulse width modulation input signal to generate the pulse width modulation output signal based on the modulation control signal. The duty cycle difference between the duty cycle of the input signal and the duty cycle of the output signal is proportional to the intensity difference between the light source and a reference light source. | 02-18-2010 |
20100097009 | SWITCHING CONVERTER FOR LIGHTING WITH LIGHT INTENSITY AS FEEDBACK AND LIGHT EMITTING APPARATUS USING THE SAME - A light emitting apparatus comprises a light emitting element and a switching converter comprising a conversion circuit for converting an operating electric signal to generate the driving electric signal, a feedback circuit having a light detecting element for detecting a luminous intensity of the light emitting element and generating a feedback signal, and a control circuit for receiving the feedback signal, comparing the received feedback signal with a reference electric signal, and controlling the conversion circuit based on comparison results to adjust the driving electric signal. Alternatively, the light detecting element detects ambient light and the control circuit controls the conversion circuit based on comparison results to stop or enable outputting of the driving electric signal. | 04-22-2010 |
20100277711 | OPTICAL QUANTIZED DISTANCE MEASURING APPARATUS AND METHOD THEREOF - The present invention discloses an optical quantized distance measuring apparatus and a method thereof. The optical distance quantized measuring apparatus comprises an illuminating module, a sensing component array and a processing module. The illuminating module projects a light source onto an object to generate a reflecting light. The sensing component array receives the reflecting light, which generates a light source location on the sensing component array. The processing module determines the light source location, and determines an interval between the object and the sensing component array according to the light source location. The processing module determines the light source location with the binary search algorithm. | 11-04-2010 |
20110090482 | OPTICAL POSITION DETECTING DEVICE AND METHOD THEREOF - The present invention relates to an optical position detecting device and method thereof, comprising multiple light emitting components, a driving unit, at least one photo detecting unit, a position storing unit and a position determining unit. Each light emitting components disposed on a plane to form a sensing area respectively projects a light source into the sensing area. The disposing positions of light emitting components and photo detecting unit are recorded in the position determining unit. The driving unit drives light emitting components sequentially. When an object encounters the projected light source above the sensing area, thus sequentially creating a reflected light signal, the photo detecting unit respectively generates sensed signals based on the intensity of the reflected light signal. The position storing unit records the positions of light emitting components and photo detecting unit. The position determining unit determines the position of the object. | 04-21-2011 |
20110226952 | Reflection Sensing System - A reflection sensing system comprises a body, an illuming module and a detecting module. The body is made by low temperature co-fired ceramic (LTCC) technology or other plasticity colloids and disposed a plurality of electronic connecting points. The illuming module includes a first accommodating space and a light emitted diode (LED), and the detecting module includes a light detector. The first accommodating space is disposed on the body and having a first open at one side. The cross-section of the first accommodating space is parabolic. The LED is disposed at the site of the focus of the first accommodating space, connected to the electronic connecting points and facing to the first open. The light detector is disposed on the body, connected to the electronic connecting points and providing sensing signals after receiving light. | 09-22-2011 |
20120012966 | MULTI-CAVITY OPTICAL SENSING AND THERMOPILE INFRARED SENSING SYSTEM - The present invention discloses a multi-cavity optical sensing and thermopile infrared sensing system, which comprises an optical sensing part, a dielectric layer, a plurality of optical cavities, and a plurality of thermocouples. The dielectric layer covers on the top of the optical sensing part. The optical cavities are formed by a plurality of metal reflectors inside the dielectric layer. The thermocouples are laterally disposed near the bottom of the dielectric layer. In addition, a low temperature region is formed in an area which is the overlapping of vertical projections of such thermocouples and the optical sensing part; a high temperature region is formed by the overlapping of vertical projections of such thermocouples, but without the overlaying which belongs to the vertical projection of the optical sensing part. Therefore, the system can sense the ambient light brightness, color conditions and human blackbody infrared signals within the range of 8-12 micrometers wavelength. | 01-19-2012 |
20120019149 | Proximity Sensor, Control Method Thereof, and Electronic Apparatus Equipped with the Same - A proximity sensor, a control method thereof and an electronic apparatus equipped with the proximity sensor are disclosed. The proximity sensor connected to a light-emitting module includes a light source, a light receiver and a control module. The light source emits lights at predetermined time intervals. The light receiver receives reflected lights of the emitted lights that are reflected from an object. The control module determines whether an average value of intensity values of the reflected lights is larger than a threshold value. If yes, the control module further determines whether a difference between a highest and a lowest intensity value of the reflected lights falls in a preset range. If yes, the control module would control the light-emitting module to change to a different light mode thereof. When a user reacts to the different light mode, the system will be able to tell whether a real user is present. | 01-26-2012 |
20120298869 | PROXIMITY SENSING APPARATUS AND SENSING METHOD THEREOF - The present invention discloses a proximity sensing apparatus and a method thereof. The proximity sensing apparatus comprises a panel, a first light-emitting unit, a second light-emitting unit and a sensing unit. The panel comprises a plurality of transparent areas. The first light-emitting unit is located at one side of the panel and emits a plurality of first light signals through one of the transparent areas. The second light-emitting unit is located at the same side as the first light-emitting unit of the panel and emits a plurality of second light signals through one of the transparent areas. The sensing unit is located at the same side as the first light-emitting unit of the panel and senses the reflected first light signals or the reflected second light signals reflected by an object. Wherein, the sensing unit is closer to the first light-emitting unit than to the second light-emitting unit. | 11-29-2012 |
20130015356 | Reflection Sensing System - A reflection sensing system comprising a body, an illuming module and a detecting module. The body is made of LCP. The illuming module includes a first accommodating space and an LED, and the detecting module includes a light detector. The first accommodating space is disposed in the body and has a first opening at one end. In the first accommodating space, the neighboring region relative to the first opening is parabolic or approximately parabolic. At an end at an inner side of the first accommodating space near the light detector, at least one cross-section near the first opening is not parabolic or approximately parabolic. The LED is disposed at the focus of the first accommodating space and aligned towards the first opening. The light detector of the detecting module is disposed in the body and generates a sensing signal after receiving light. | 01-17-2013 |
20140191143 | Optocoupler - An optocoupler is disclosed including a receiving unit, a metal bump, a substrate, a transparent light guiding block, a light emitting unit, and a transmitting unit. The metal bump is formed on the receiving unit and connects to the substrate. The transmitting unit is electrically connected to the light emitting unit, so as to selectively control whether the light emitting unit to emit the light or not. The metal bump is utilized to connect the substrate with the receiving unit, and then the transparent light guiding block is utilized to cover the light emitting unit, so as to simplify the structure of the optocoupler. | 07-10-2014 |
20140246592 | OPTICAL SENSOR SYSTEM - An optical sensor system is disclosed. The optical sensor system comprises a panel and a sensing unit. The panel comprises a plurality of transparent areas. The sensing unit locates at one side of the panel and the sensing unit senses a plurality of first light signals reflected by an object and senses a plurality second light signals of an ambient light. The reflected first light signals and the second light signals pass through one of the plurality of transparent areas of the panel. The sensing unit further comprises a light sensor and a plurality of gesture sensors. The light sensor locates at the center of the sensing unit, and the light sensor senses the second light signals. The plurality of gesture sensors surrounds the light sensor, and the gesture sensors senses the reflected first light signals and then produce gesture signals corresponding to motions of the object. | 09-04-2014 |
20140253780 | METHOD OF ADJUSTING LIGHT DETECTION ALGORITHM - A method of adjusting light detection algorithm is disclosed. The method of adjusting light detection algorithm comprises steps of obtaining a position information of a mobile device comprising at least one light sensor; determining an ambient light information by the at least one light sensor; and adjusting a light detection algorithm according to the position information and the ambient light information. | 09-11-2014 |