OPTICAL SPOT SIZE STUDY FOR DATA EXTRACTION FROM A TRANSPARENCY.
Final rept., Feb-Jul 65,
CBS LABS STAMFORD CONN
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A breadboard model scanner using coherent light to generate a small optical spot for data extraction from a transparency was constructed. Using the technique developed, a capability of distinguishing 256 1pmm and 30 shades of grey from light to dark was demonstrated. The system consists of a laser light source, a beam expander, a beam normalizer, a rotating optical scanning system to cover a 2 inch wide transparency, a transparency holder, a light collector and a photomultiplier assembly including video amplifier and high voltage power supply. These system components are basically off-the-shelf items. Author
- Lasers and Masers
- Optical Detection and Detectors