Detection of an incident light distribution
First Claim
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1. A system for displaying an image, comprising a lighting device which comprises:
- an incident light detecting device adapted for detecting an incident light distribution, the incident light detecting device comprising;
an array of light sensors;
a shadow casting element spaced above the light sensor array, with the shadow casting element between the incident light to be detected and the sensor array; and
a processor for interpreting a cast shadow detected by the light sensor array thereby to derive information relating to the directional distribution of the incident light; and
a light output device, wherein the light output device is controlled in dependence on the information relating to the directional distribution of the incident light.
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Abstract
A device for detecting an incident light distribution. The device has an array of light sensors, and a shadow casting element spaced above the light sensor array, with the shadow casting element between the incident light to be modeled and the sensor array. A processor interprets a cast shadow detected by the light sensor array thereby to derive information relating to the directional distribution of the incident light.
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Citations
13 Claims
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1. A system for displaying an image, comprising a lighting device which comprises:
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an incident light detecting device adapted for detecting an incident light distribution, the incident light detecting device comprising; an array of light sensors; a shadow casting element spaced above the light sensor array, with the shadow casting element between the incident light to be detected and the sensor array; and a processor for interpreting a cast shadow detected by the light sensor array thereby to derive information relating to the directional distribution of the incident light; and a light output device, wherein the light output device is controlled in dependence on the information relating to the directional distribution of the incident light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of controlling an image display system, comprising:
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detecting an incident light distribution, comprising; using a shadow casting element spaced above a light sensor array to cast a shadow on the light sensor array; and interpreting the cast shadow detected by the light sensor array thereby to derive information relating to the directional distribution of the incident light; and controlling a light output device in dependence on the information relating to the directional distribution of the incident light. - View Dependent Claims (12, 13)
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Specification