Avago Technologies Ecbu IP (singapore) Pte. Ltd.

Len-Li Kevin Lim

Rizal Bin Jaffar

Joon-Chok Lee

Ken A Nishimura

Kwai Lee Pang

Arjuna Bin Marzuki

In one embodiment, apparatus for integrating a quantity of light is provided with a photosensor, an integration capacitor, and a transfer amplifier. The transfer amplifier has i) an input coupled to receive a voltage determined by the integration capacitor, and ii) an output. The apparatus is further provided with a first switch to pull the integration capacitor to a precharge voltage, and a second switch to couple the integration capacitor to the photosensor, to discharge the integration capacitor in proportion to a quantity of light that is incident on the photosensor. Other embodiments are also disclosed.

Method and apparatus for integrating a quantity of light

In one embodiment, light having a first spectrum is filtered from a mixed light. Light having a second spectrum, different from the first spectrum, is also filtered from the mixed light. An intensity of the light having the first spectrum, and an intensity of the light having the second spectrum, are then sensed. From the sensed intensities of the lights having the first and second spectrums, an intensity of light having a third spectrum is estimated.

Methods and apparatus for estimating the intensity of one spectrum of light in a mixed light, in response to the sensed intensities of one or more other spectrums of light in the mixed light

In one embodiment, a light measurement is acquired from each of a plurality of illumination zones. Each light measurement is digitized, and values derived from the digitized light measurements are stored, proximate to where the light measurements are acquired. The values derived from the digitized light measurements are then transmitted to a central control system, and light emitted by the illumination zones is regulated based on determinations made by the central control system. In some cases, the light measurements may be acquired and transmitted via a light sensor package having: a light sensor providing an analog output proportional to received light; an analog-to-digital converter to convert the analog output of the light sensor to a digital value; a memory to store a value derived from the digital value; and an addressable communication interface to transmit the stored value to an external control system.

System, method and apparatus using addressable light sensors

In one embodiment, light is detected using a photodetector. If the detected light is causing the photodetector to saturate, one or more liquid crystal light valves are adjusted to filter the amount of incident light on the photodetector.

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Perak, Malaysia

Len-Li Kevin Lim