Matches 1 - 50 out of 123 1 2 3 >


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US20130003051 LIGHT EMITTING DIODE VERIFICATION SYSTEM  
A light emitting diode (LED) verification system is provided having a mounting module for securing an LED board for testing. The mounting module includes a thermal management system for...
US20110265840 SOLAR PANEL EFFICIENCY ESTIMATOR  
A photovoltaic efficiency estimator, comprising a photovoltaic cell covered by a sunlight-penetrable surface; an illuminator for artificially illuminating said surface; and a controller connected...
US20080099309 Roller for a roller conveyor  
The invention relates to a roller (10′) for a roller conveyor, having an outer cylinder (12′) that is rotatably mounted on a stationary shaft (14′) and which may be driven by a motor (16), the...
US20130057853 PHOTOELECTRIC METER FOR STAMPS PERFORATIONS  
Photoelectric Meter for Stamps Perforations made up of two rows of photoreceptor cells conveniently connected to printed circuits endowed with a CICounter, a CIConverter and a Display, integrated...
US20130054197 METHOD FOR EVALUATING DISCOMFORT GLARE AND DISCOMFORT GLARE EVALUATION PROGRAM  
According to one embodiment, a method is disclosed for evaluating discomfort glare. The method can include obtaining average luminance information relating to an average luminance La of a luminous...
US20140333203 RED EMITTING PHOSPHOR FOR PLASMA DISPLAY PANELS AND GAS DISCHARGE LAMPS  
The invention provides a lighting unit (100) comprising (1) a vacuum ultraviolet (VUV) radiation based source of radiation (10) configured to generate VUV radiation (11), and (2) a luminescent...
US20110304847 Ambient Light Sensor  
Embodiments described herein relate to a light sensing system. In one embodiment, the light sensing system may include a microprocessor including an input pin configured to receive a first voltage...
US20100073669 OPTICAL SENSOR ASSEMBLY  
The present invention provides systems and methods for measuring an analyte in a medium without exposing the medium to contamination. The systems and methods employ a novel combination of a small...
US20110292381 METHOD FOR MEASURING OPTICAL INPUT POWER BY AVALANCHE PHOTODIODE  
A method to monitor an output of an APD is disclosed. The method includes steps of, (a) measuring dark currents of the APD at several temperatures in advance to a practical operation of the APD,...
US20150105873 Optoelektronischer Sicherheitssensor  
The invention relates to an optoelectronic safety sensor comprising an electronic measuring device for generating measured signals which depend on a state of a safety zone observed by the safety...
US20090172474 Network Diagnostic Systems and Methods for Light Levels of Optical Signals  
A network diagnostic system may include a network diagnostic device. The network diagnostic device may be configured to receive data indicating a light level of an optical signal and to perform at...
US20120173175 PHOTODIODE ARRAY WITH ALGORITHM-BASED CROSSTALK REDUCTION  
A photodiode (PD) array accurately measures incident optical power on each of the PDs in the array by eliminating the effect of crosstalk between the individual PDs. Crosstalk within the PD array...
US20090051907 METHOD FOR MEASURING BRIGHTNESS UNIFORMITY OF A PANEL  
A method for measuring brightness uniformity of a panel is disclosed. The method includes steps of: dividing the panel into a plurality of areas, measuring brightness of each area, calculating...
US20100073830 SECURE ARC FLASH DETECTION  
An intelligent electronic device (IED) may be configured to detect arc flash events within a power system using stimulus measurements acquired by detection devices communicatively coupled to the...
US20090274983 SCANNING EXPOSURE APPARATUS AND METHOD OF MANUFACTURING DEVICE  
A scanning exposure apparatus (300) includes a first stage (325), a second stage (345), a projection optical system (330), a first measurement unit (20) arranged on the second stage (345), and a...
US20140240698 METHOD FOR CORRECTING FOR DARK CURRENT VARIATION IN TEC COOLED PHOTODIODES  
An optical power meter including a photodiode having a surface for receiving a beam of light, a thermo-electric cooler for maintaining the photodiode at a predetermined temperature, and a current...
US20120150485 LUMINANCE SENSING SYSTEM AND METHOD AND COMPUTER PROGRAM PRODUCT THEREOF  
A luminance sensing system and method and a computer program product thereof are provided. The system includes: a first luminance sensing unit, arranged at a first position, and used for sensing a...
US20100045974 Compact Background-Free Balanced Cross-Correlators  
A compact, background-free, balanced cross-correlator enables (a) the detection of a timing error between two ultrashort pulses with (sub-)femtosecond resolution and (b) the timing synchronization...
US20080074652 Retroreflector-based system and method for detecting intrusion into a restricted area  
Embodiments of the present invention include a system for detecting entry of an object from a first area into a second area. The system includes a light source for generating a light beam, the...
US20090262338 TESTING SYSTEM AND TESTING METHOD FOR KEYBOARD LIGHT OF MOBILE PHONE  
A testing system includes a computer (10), a motherboard (31) of a mobile phone, a photosensitive component (33) and a measuring device. The motherboard of the mobile phone is connected to the...
US20070091300 Light monitoring device  
A monitoring device for monitoring a light beam comprises a filter, first and second photodetectors, and an optical body. The first photodetector is arranged to detect a first portion of the light...
US20130242290 Imaging Sensor Array Testing Equipment  
A testing device for testing one more characteristics of an electronic display. The testing device includes a main body and a receiving cavity defined within the main body configured to receive at...
US20070268482 METHOD FOR OPTICALLY DETECTING AN ELECTRICAL ARC IN A POWER SUPPLY  
A method for optically detecting an electrical arc in a power supply. The method includes capturing light with a light pipe, transmitting the captured light along at least a portion of a length of...
US20120176135 OPTICALLY CONTROLLED MEMS SWITCH AND METHOD OF USING THE SAME  
The present embodiments are directed towards the optical control of switching an electrical assembly. For example, in an embodiment, an electrical package is provided. The electrical package...
US20110316715 MOBILE DEVICE INCLUDING A SOLAR BATTERY  
A mobile device including a solar battery having a light-receiving surface provided on a casing of the mobile device, an illuminance detector that detects an illuminance of light incident on the...
US20130114072 SOLAR CELL INSPECTION METHOD AND APPARATUS THEREOF  
A solar cell inspection method and apparatus are disclosed. An embodiment of the solar cell inspection method includes the steps of: charging a diffusion capacitance of a solar cell; after...
US20120133925 LIGHT INTENSITY MEASURING UNIT AND MICROSCOPE INCLUDING THE SAME  
A light intensity measuring unit for measuring an intensity of light emitted from a microscope includes an aperture stop, a field stop, at least one measurement lens arranged between the aperture...
US20110299068 Luminous Flux Depreciation Notification System for Light Fixtures Incorporating Light Emitting Diode Sources  
A LED light fixture and a luminous flux monitoring system for a light fixture. The light fixture includes a housing defining an interior space including an interior surface and a transmissive...
US20120206726 PHOTONIC CRYSTAL SPECTROMETER  
Apparatus and methods can include an optical waveguide coupled to a photonic crystal comprising a dielectric material, the photonic crystal located on an exterior surface of the optical waveguide...
US20120127460 INTEGRATING CIRCUIT AND LIGHT-DETECTION DEVICE  
A photodetecting device 1 includes a photodiode PD and an integrating circuit 10. The integrating circuit 10 includes an amplifier circuit 20, a capacitive element C, a first switch SW1, and a...
US20090231575 Method for Measuring Luminance of Light-Emitting Object and Device Therefor  
A method for measuring the luminance of a light-emitting object having a surface which has a definite area and which emits a low-intensity light and a device therefore, wherein a light-receiving...
US20090009752 Method And Apparatus For Referencing A MEMS Device  
A method and an apparatus for calibrating a MEMS actuator of a hybrid MEMS-PLC optical switch or router is described. Two calibrating waveguides, embedded monolithically adjacent to the waveguides...
US20100037373 METHOD OF DETECTING AND CONTROLLING PERCEPTUAL FLICKER  
A method and apparatus are provided for processing light from a light source. The method includes the steps of measuring a predetermined set of characteristics of the light source and detecting...
US20100045971 Solar-powered light intensity measurement device  
There is provided a solar powered light intensity measurement device which includes one or more photovoltaic cells, one or more resistors and one or more light emitting diodes. The one or more...
US20090316142 METHOD FOR MEASURING ILLUMINANCE OF LAMP  
A method for measuring illuminance of a lamp utilizes at least one illuminance meter and a rotary apparatus. The lamp is installed on the rotary apparatus. The lamp emits light and projects onto...
US20140374221 DETECTION DEVICE FOR A CONVEYOR  
The invention relates to a detection device (2) intended to be positioned in a conveyor (1) which comprises conveying rollers (100) arranged between two lateral uprights (10, 11) to convey goods...
US20120090961 DETECTION DEVICE FOR A CONVEYOR  
The invention relates to a detection device (2) intended to be positioned in a conveyor (1) which comprises conveying rollers (100) arranged between two lateral uprights (10, 11) to convey goods...
US20110043793 OPTICAL SIGNAL MEASUREMENT DEVICES  
A device includes a female connector to receive a male network connector of a network conduit, and a first male connector optically communicating with the female connector, where the first male...
US20150138823 FLUORESCENT FIBER LIGHT SENSOR  
Generally, the present disclosure provides for a light duct sensor that can monitor an average light flux through light duct useful for architectural lighting. The present disclosure provides for...
US20070268481 System and method for measuring scene reflectance using optical sensors  
A system measures reflectance in a scene. A first optical sensor is configured to measure incident energy at a location in a scene. A second optical sensor is configured to measure reflected...
US20090079857 SOLID-STATE IMAGING DEVICE, RECEIVED-LIGHT INTENSITY MEASURING DEVICE, AND RECEIVED-LIGHT INTENSITY MEASURING METHOD  
The received-light intensity measuring device includes: a pixel circuit 1 including a photodiode (PD) that accumulates an amount of electric charges according to the intensity of received light, a...
US20150069920 Failure detection in lighting system  
The present invention relates to a method of detecting a failed luminaire and/or light sensor in a lighting system comprising M luminaires and N light sensors. The elements Dsl of an N×M transfer...
US20140192351 INSPECTING EQUIPMENT FOR INSPECTING A LIGHT EMISSION CHARACTERISTIC OF A MONITOR  
Disclosed is an inspecting equipment for inspecting a light emission characteristic of a display screen includes: a carrying device provided for carrying the display screen, a cover device and a...
US20120281206 UNIT PIXELS, DEPTH SENSORS AND THREE-DIMENSIONAL IMAGE SENSORS INCLUDING THE SAME  
A unit pixel of a depth sensor includes a light-receiver configured to perform photoelectric conversion of an incident light to output an electrical signal and at least two sensors adjacent to the...
US20110098957 MEASUREMENT APPARATUS AND METHOD FOR RAPID VERIFICATION OF CRITICAL OPTICAL PARAMETERS OF A VIEWING DISPLAY DEVICE SCREEN AND VIEWING ENVIRONMENT  
A hand held measurement apparatus and method for in situ optical analysis of a specific display screen or viewing box and associated ambient light environment is disclosed. The apparatus uses a...
US20100157290 MULTI-OPTICAL AXIS PHOTOELECTRONIC SENSOR  
This invention enables a worker, who performs a work for optical axis adjustment, to easily grasp whether adjustment for further increasing the light receiving quantity is possible. In a...
US20070097358 System and method for obtaining multi-color optical intensity feedback  
In LED back-lighted display systems where the LED driving signals are pulse width modulated, brightness of the LED is determined by the duty cycle (length of the “on” pulse). In such systems, it...
US20100060779 LIGHT QUANTITY DETECTING APPARATUS AND IMAGING APPARATUS  
A light quantity detecting apparatus is disclosed which includes: an integration detection section configured to output a signal that varies with integrated quantities of light received by a...
US20100244709 Wireless Battery-Powered Daylight Sensor  
A wireless battery-powered daylight sensor for measuring a total light intensity in a space is operable to transmit wireless signals using a variable transmission rate that is dependent upon the...
US20130019461 OPTO-ELECTRONIC MODULES AND METHODS OF MANUFACTURING THE SAME AND APPLIANCES AND DEVICES COMPRISING THE SAME  
Manufacturing opto-electronic modules (1) includes providing a substrate wafer (PW) on which detecting members (D) are arranged; providing a spacer wafer (SW); providing an optics wafer (OW), the...

Matches 1 - 50 out of 123 1 2 3 >