Intelligent light source with synchronization with a digital camera
First Claim
1. An intelligent light source, comprising:
- a) a source of light, b) a means for calibrating said source of light, c) a means for controlling said source of light to produce a timed light pulse of light synchronized with a light receptor.
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Accused Products
Abstract
An intelligent light source for use with the test of a digital camera module provides a plurality of shapes of light. A fast light pulse is created with turn-on and turn-off transitions less than or equal to one microsecond. Other waveform shapes comprise a ramp and a sinusoid, and all shapes can be made to occur once or repetitively. The magnitude of the light has a range from 0.01 LUX to 1000 LUX, and the ramp has a ramp time that has a range from microseconds to 100 ms. The light comprises of a plurality of colors created by serial connected strings of LED devices, where the LED devices in a string emit the same color. The light emanating from the light source is calibrated using a photo diode and the control of a tester by adjusting offset voltages of a DAC controlling a current through the LED strings.
153 Citations
55 Claims
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1. An intelligent light source, comprising:
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a) a source of light, b) a means for calibrating said source of light, c) a means for controlling said source of light to produce a timed light pulse of light synchronized with a light receptor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A light system for testing a light sensitive device, comprising:
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a) a tester, b) a controller, c) a data memory, d) a digital to analog converter (DAC), e) a voltage to current converter, f) a light source, g) a light sensitive device, h) said tester coupled to the controller to control a selection of data from said data memory to be coupled to said DAC, i) said DAC controlling said voltage to current converter to produce a current to turn on said light source to illuminate said light sensitive device. j) said light sensitive device coupling data and control signals to said tester. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A method for applying a defined light to a light sensitive device, comprising:
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a) selecting a single or repetitive occurrence of a light emanating from a light source to illuminate a digital camera module under test (MUT), b) selecting a time varying shape of said light, c) selecting an intensity of said light, d) selecting a color of said light e) synchronizing said light with a clock of said MUT, f) capturing a digital image of said light with said MUT and coupling a digital image to a tester, g) changing said color if required and repeating steps (d) through (g), else step (h), h) changing said intensity of the light if required and repeating steps (c) through (h), else step (i), i) changing said shape of the light pulse if required and repeating steps (b) through (i), else step (j), g) changing said repetition if required and repeating steps (a) through (g), else step (k), k) ending test sequence. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. A method of calibration of a light used to test a digital camera module, comprising:
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a) selecting a color of light to illuminate a photo diode, b) selecting an intensity of said light, c) turning on said light, d) measuring said light with the photo diode, e) calibrating said light, f) calibrating a next light intensity and repeating steps (b) through (f) if not all light intensities are calibrated, else step (g), g) selecting a next color and repeating steps (a) through (g) if all light colors are not calibrated, else end. - View Dependent Claims (52, 53, 54, 55)
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Specification