Optics: image projectors – Simultaneous projection and manual delineation
Patent
1978-08-21
1980-03-04
Shepperd, John W.
Optics: image projectors
Simultaneous projection and manual delineation
353 35, 346 17, 346 76L, 350353, 430 1, G03B 2100
Patent
active
041914570
ABSTRACT:
An apparatus for altering an optically projected member includes a writing light which is directed at the apparent projected image of the member, which may be a transparency or workpiece or the like. The writing light is transmitted backwards through the projection optics, and is focussed to an intensely illuminated writing spot near the projection member. A recording member, such as a recording transparency which is sensitive to the writing light and insensitive to the projection beam, is disposed adjacent to the projection slide. The recording member is altered by the focussed writing light to form a locally marked area which becomes incorporated in the apparent projected image.
REFERENCES:
patent: 3282183 (1966-11-01), Tuttle et al.
patent: 3656175 (1972-04-01), Carlson et al.
patent: 3775005 (1973-11-01), Szubo
patent: 3831165 (1974-08-01), Chivian et al.
patent: 3892965 (1975-07-01), Blattner et al.
patent: 3959799 (1976-05-01), Gambino et al.
patent: 3971874 (1976-07-01), Ohta et al.
patent: 4000945 (1977-01-01), Tajima et al.
patent: 4118229 (1978-10-01), Stromberger et al.
patent: 4121196 (1978-10-01), Johnson et al.
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