System can enhance or reduce contrast of photographic transparency for printing or projection by using constructive and destructive interference of collimated laser beam. System is potentially less expensive than electronic CRT methods and is more accurate than trial-and-error manual techniques.
Contrast enhancement of transparencies
NASA Tech Briefs ; 1 , 2
1976-08-01
Sonstige
Keine Angabe
Englisch
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Engineering Index Backfile | 1943
Online Contents | 1994
Electrically-Heated Transparencies
Emerald Group Publishing | 1963
Vision through Aircraft Transparencies
NTIS | 1988
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