| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 315134000 | Radiant energy responsive control type | 10 |
| 20080224618 | DISCHARGE LAMP HAVING A VISUAL-CHANGE TIMER - A discharge lamp having a visual-change timer is described. The visual-change timer is comprised of a ceramic material that provides an indication of the cumulative operating time of the lamp. The visual-change timer is expected be a help to consumers in avoiding unnecessary, premature, and costly lamp replacement and a help to lamp manufacturers in verifying the validity of warranty claims for replacement lamps. | 09-18-2008 |
| 20100264829 | LIGHT SOURCE APPARATUS - A light source apparatus includes an excitation-light source, a first light guiding member and a second light guiding member which guide excitation light emitted from the excitation-light source, a wavelength converting member which is installed near an emitting end of excitation light from the excitation-light source of the first light guiding member and the second light guiding member, and which receives excitation light which has been guided by one of the first light guiding member and the second light guiding member, and emits a wavelength-converted light of a wavelength different from a wavelength of the excitation light, a first light receiving element which is installed near the wavelength converting member, and which directly or indirectly receives the wavelength-converted light of which, the wavelength is converted by the wavelength converting member, and an optical path switching section which guides the excitation light to one of the first light guiding member and the second light guiding member according to an output of the first light receiving element. | 10-21-2010 |
| 20120074848 | METHOD AND SYSTEM FOR MONITORING PERFORMANCE OF A DISCHARGE LAMP AND CORRESPONDING LAMP - The present invention provides a method of monitoring performance of a discharge lamp. The discharge lamp includes electrodes and a discharge vessel filled with gas and equipped with a luminescent layer, wherein the gas is intended to emit a first ultraviolet light in a first spectral range when the gas is excited by an electric field produced by the electrodes, and at least part of the first ultraviolet light is intended to be changed into a second ultraviolet light in a second spectral range of longer wavelength than the first spectral range by the luminescent layer. The method comprises the steps of finding the value of a first intensity of the first ultraviolet light; finding the value of a second intensity of the second ultraviolet light; and determining the conversion efficiency of the luminescent layer for converting the first ultraviolet light into the second ultraviolet light on the basis of the ratio of the value of the second intensity to the value of the first intensity. | 03-29-2012 |
| 20120146516 | SYSTEM FOR MANUFACTURING POWER SUPPLY UNIT AND METHOD FOR MANUFACTURING POWER SUPPLY UNIT, AND FLICKER MEASUREMENT APPARATUS - A method of manufacturing a power supply unit (PSU) is provided. The method includes providing at least one PSU supplying a dimming signal to at least one light source, performing a first test for electrical characteristics of the at least one PSU, detecting light emitted from the at least one light source, measuring a flicker of the at least one light source, and performing a second test for a state of the at least one PSU based on a flicker measurement result, and packing a PSU determined to be in a normal state among the at least one PSU, as a result of the first test and the second test. | 06-14-2012 |
| 20130140993 | FAILSAFE LIGHTING SYSTEM - A failsafe lighting system ( | 06-06-2013 |
| 20140292204 | Underwater LED Light With Replacement Indicator - Disclosed is a method of determining depreciation of a lumen output of an LED. More particularly, disclosed is a method of determining depreciation of a lumen output of an LED comprising monitoring, by a processing device, an operating characteristic of an AC power source operatively coupled to the LED; determining, by the processing device, whether a lumen output the LED depreciated beyond a specified lumen value based on the monitoring; and causing, by the processing device, an indicator to provide notification to a user based on determining the lumen output of the LED depreciated beyond the specified lumen value. | 10-02-2014 |
| 20150130355 | HEAD-WEARABLE USER INTERFACE DEVICE FOR LIGHTING RELATED OPERATIONS - A wearable user interface device provides a display (e.g. an augmented reality display) for a user/wearer. The device includes a camera or other optical sensor and wireless communication capability. The camera or sensor provides an input to detect and possibly communicate with a lighting device or system. The communications and display capabilities allow the device to obtain and present lighting-related information to the wearer. For example, before installation, the device may identify a light fixture and communicate with a server to obtain information about fixture installation or configuration. As another example, the user can operate the device to identify and communicate with an installed fixture, to configure the fixture into a system (e.g. as part of a lighting group) or to check or repair fixture or system firmware. Hence, the device provides a wearable, interactive user interface for a variety of lighting-related functions. | 05-14-2015 |
| 20150305126 | ILLUMINATION SYSTEM AND ILLUMINATION DEVICE - An illumination system includes an illumination device, a control unit for controlling a turn-on operation of the illumination device, and a terminal through which manipulation information of the illumination device is inputted by a user. The control unit includes an information extracting unit for extracting illumination information, within a period between a first moment prior to a falling-asleep time of the user and a second moment after a wakeup time of the user, from manipulation information and operation information of the illumination device stored in a memory unit, and an information transceiver unit for transmitting and receiving the illumination information to and the terminal. The terminal includes a terminal transceiver unit for transmitting and receiving the illumination information to and from the control unit, a display unit for displaying the illumination information received through the terminal transceiver unit and an input unit by which the manipulation information is inputted. | 10-22-2015 |
| 20150366021 | LIGHT AND LIGHT SENSOR - An LED-based light includes one or more LEDs, a sensor arranged to detect a brightness level in an area resulting from the combination of light emitted by the LEDs with light from at least one ambient light source other than the LEDs, and operable to output a signal corresponding to the detected brightness level, a controller operable to regulate an amount of power provided to the LEDs in response to the signal, a light transmitting housing for the LEDs, the sensor and the controller and a connector shaped for connection with a light socket disposed at an end of the housing. | 12-17-2015 |
| 20160057832 | METHODS AND APPARATUS FOR COMMUNICATING CURRENT LEVELS WITHIN A LIGHTING APPARATUS INCORPORATING A VOLTAGE CONVERTER - Circuits for sensing current levels within an apparatus are disclosed. In specific cases, a constant voltage power supply is used to power an LED lighting apparatus in which there are uncertainties within the forward voltages of the LEDs, which in turn creates uncertainty with respect to the current level flowing through the LEDs. To manage these uncertainties, the current flowing through the LEDs is measured by determining a voltage level across a known resistor and calculating the current level. To prevent the known resistor from causing a significant reduction in the efficiency of the overall light engine, the circuit includes one or more transistors in parallel with the known resistor to reduce the effective resistance in the LED circuit during times that the current is not being sensed. | 02-25-2016 |
