Optics: image projectors – Plural projection paths with single light source
Patent
1977-11-11
1980-08-12
Gonzales, John
Optics: image projectors
Plural projection paths with single light source
353 28, G03B 2900, G03B 2100
Patent
active
042170478
ABSTRACT:
The apparatus includes a projector adapted for illuminating particular things such as art objects. The projector is constructed to receive a mask through which the projected light passes, the mask having an opening or aperture the contour of which conforms exactly to the shape of the object to be illuminated. In one form, the projector is constructed to have a photographic cassette of the self-developing type inserted into it so that a photograph can be made in the projector of the particular object that is to be illuminated. A photographic shutter may be provided with the projector for this purpose. The photograph obtained is superimposed on a sheet of metal masking material and then an aperture is cut in the masking material conforming to the outlines of the photograph of the object to be illuminated. In an alternate form, the projector is used in conjunction with a photosensitized mask blank which may be exposed through the projector lens system and then developed so that the image of the mask area to be cut is visible directly on the mask blank.
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patent: 2972931 (1961-02-01), Roob
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patent: 3683779 (1972-08-01), Lifton
Jacksen Peter J.
Jacksen Peter R.
Kuklin Arlen J.
Vessely James F.
Gonzales John
Jacksen International, Ltd.
Tarcza Thomas H.
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