Abstract:
The present invention relates to a solid-state based light source, a corresponding circuitry and a method of emitting light, including one or more light source elements for generating light, a first sensor for receiving light emitted by the light source elements and ambient light and for generating a first sensor signal (S1) representing the received light, a second sensor for only receiving ambient light and for generating a second sensor signal (S2) representing the received ambient light. Moreover, the solid-state based light source comprises a control unit for receiving the first and the second sensor signals (S1, S2) and for generating control signals (Sc) for controlling the light source elements, based on the difference between the first and the second sensor signals (S1, S2), to compensate for the influence of the ambient light.
Abstract:
PROBLEM TO BE SOLVED: To provide a white LED which does not require such a significant white balance adjustment as could lead to reduction in display luminance on a liquid crystal panel and which is selected so that a chromaticity variation on panel display fits within a desired range.SOLUTION: When the chromaticity of the primary light of a combinatorial LED composed of an LED element emitting primary light and a phosphor excited by the primary light to emit secondary light greater in wavelength than the primary light is within a predetermined range, an LED classification device (21) classifies the LED as the one which is to be used for the backlight of a liquid crystal display device. A coefficient calculation unit (26) and a correction chromaticity calculation unit (27) calculate for all of LEDs to be classified a correction value for the chromaticity obtained by assuming that the primary light has transmitted the color filter of the liquid crystal display device, and subtract the correction value from obtained chromaticity individually for all of LEDs to be classified to correct the chromaticity. A chromaticity rank classification unit (28) classifies the LED by chromaticity rank on the basis of the corrected chromaticity.
Abstract:
The present system provides a sensor clip system that can be clipped to luminaires of a plurality of shapes and sizes and method of using the sensor clip. Some of the sensors are upward looking (into the luminaire) while others are downward looking (away from the luminaire); and thus face in substantially opposite directions. The sensor clip is adjustable in one, two or three dimensions to be able to easily fit with different sized and shaped luminaires, such that the upward looking sensors may face the incoming light and downward looking sensors face away from the light. The sensor clip system may also provide attenuation of the luminous intensity of the emitted light coming out of the luminaires and extends the longevity and usability of the embedded sensor.
Abstract:
Methods and systems for modulating a manufactured light source are disclosed. Methods and systems of the present disclosure include sensor assemblies having first and second light sensors to retrieve light spectrum data at a target location, such as from a surface in an interior space at a home, office, or commercial building, that also receives daylight exposure. The first light sensor retrieves the light spectrum data within a spectrum of the manufactured light source. The second light sensor retrieves light spectrum data outside of the spectrum of the manufactured light source, yet within the spectrum of daylight. The light spectrum data is used to define spectral characteristics at the target location, such as a ratio of daylight to the manufactured light source, phase of daylight, and average overall quantity, which are used to maximize light-associated benefits of the spectral composition for the occupants at the target location, such as humans, plants, and animals.
Abstract:
Optoelectronic modules for proximity determination and ambient light sensing include hybrid optical assemblies configured with multiple field-of-views. The field of view in a region of the hybrid optical assembly can be dedicated to a first detector, while the field of views in another region of the hybrid optical assembly can be dedicated to both the emission of light and ambient light sensing. Embodiments relate particularly to implementation in a mobile phone or other portable electronic devices.
Abstract:
Systems and methods for characterizing solid state lighting devices are provided. In certain examples, systems and methods for measuring various parameters of light emitting diodes (LEDs), characterizing each LED based on the measured parameters and selecting one or more of the characterized LEDs such that the emitted light from each of the selected LEDs is mixed with the light from the other selected LEDs to create a desired overall light output are described.
Abstract:
Systems and methods for characterizing solid state lighting devices are provided. In certain examples, systems and methods for measuring various parameters of light emitting diodes (LEDs), characterizing each LED based on the measured parameters and selecting one or more of the characterized LEDs such that the emitted light from each of the selected LEDs is mixed with the light from the other selected LEDs to create a desired overall light output are described.