Spatial light modulator based optical calibration system
AssigneeTexas Instruments Incorporated
InventorsJeffrey B. Sampsell, James M. Florence
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Abstract
A method and system for calibration of optical systems is disclosed. The system consists of a reference source (12), a spatial light modulator (26) for transmitting the reference source signal through non-imaging optics (30) and into the input of an optical system (36). The output of the optical system is then compared to the input signal and a correction is derived. The correction is stored and used real-time to adjust the output of the system to more accurately reflect the actual input signal.
Claims17
An optical system comprising:
- a. a reference source with at least one reference output signal wherein the value of the reference output signal is known;
- b. a spatial light modulator for selectively directing said reference output signal from said reference source to non-imaging optics wherein said non-imaging optics uniformly transmit said reference output signal to the input of said optical system;
- c. an output signal from said optical system;
- and
- d. a means for comparing the input of said optical system and the output of said optical system, deriving a correction based upon that comparison and storing it.
A method of calibrating an optical system comprising:
- a. providing a reference source with at least one reference output, wherein the value of said reference output is known;
- b. transmitting an image of the reference output to non-imaging optics with a spatial light modulator;
- c. uniformly transmitting an image of the reference output through said non-imaging optics to the input of an optical system;
- d. creating an output signal with said optical system;
- e. comparing the reference output signal with the optical system output signal;
- and
- f. deriving and storing a correction for said optical system.
A method of operating a display system comprising:
- a. providing a calibration system, wherein said calibration system further comprises:
- i. establishing a reference source;
- ii. operating a spatial light modulator for transmitting an image of said reference source;
- and
- iii. transmitting said image of said reference source from said spatial light modulator to non-imaging optics wherein said non-imaging optics transmit said image uniformly to the input of said display system;
- b. comparing said input of said display system with the output of said display system;
- c. deriving a correction for each pixel at said output of said display system;
- and
- d. storing said correction.
Dependencies are inferred from the claim text.