Optics: image projectors – Plural projection paths with single light source
Patent
1976-03-29
1978-06-13
Stephan, Steven L.
Optics: image projectors
Plural projection paths with single light source
40361, 353 31, 353 42, G09F 1124, G02B 2702, G03B 2100
Patent
active
040945898
ABSTRACT:
A viewer has a telescopic housing and includes a lens system carried by one housing part and a plurality of correlated information sources supported by another housing part and arranged serially along the optical axis of the lens system in a plurality of focal planes. At least one of the information sources comprises a transparency which has data thereon and is disposed between the lens system and another of the information sources. When the lens system is focused on the one information source the other of the information sources are out of the field of focus of the system whereby data on any one of the information sources may be viewed to the selective exclusion of data on the other of the information sources. Color filters associated with the lens system may be employed to view portions of data on any one information source to the exclusion of other data thereon.
REFERENCES:
patent: 1833595 (1931-11-01), Samson et al.
patent: 2548488 (1951-04-01), Mella
patent: 2619870 (1952-12-01), Toricelli
patent: 3191490 (1965-06-01), Rabinow
patent: 3195402 (1965-07-01), Hamilton
patent: 3343452 (1967-09-01), Ackermann et al.
patent: 3436983 (1969-04-01), Krantz
patent: 3563645 (1971-02-01), Burke et al.
patent: 3914570 (1975-10-01), Lockard
patent: 3992088 (1976-11-01), Blanke
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