Evaluation of Nearly Parallel Light Beams Using a Penta-Prism.
MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
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The use of a penta-prism to measure the divergance of different elements of a collimated beam of light is analyzed. Measurements of the beam from the Airborne Optics 23-inch collimator show the maximum divergance of rays from parallelism to be about 0.000030 radians. Author
- Optical Detection and Detectors