Optical prism, and projection television set using same

Details Optical prism, and projection television set using same Optical prism, and projection television set using same

1988-05-31

1990-04-03

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

350173, 358 60, 353 33, G02B 504, G02B 506, H04N 931

Patent

active

049135287

ABSTRACT:
A prism system is disclosed which employs at least one solid or liquid filled prism element optically coupled to at least one plate like member which forms a total reflection surface or a dichroic mirror. In one embodiment the prism is molded from transparent plastic, e.g., PMMA or polystyrene, and in another embodiment the prism is molded from glass. In the case where a liquid is used, the liquid may be glycerol or a mixture of glycerol and ethyleneglycol. The prism is useful for a projection television set.

REFERENCES:
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patent: 3202039 (1965-08-01), De Lang et al.
patent: 3610818 (1971-10-01), Bachmann
patent: 3659918 (1972-05-01), Tan
patent: 3659927 (1972-05-01), Moultrie
patent: 3739080 (1973-06-01), Bachmann
patent: 3922069 (1975-11-01), Kishikawa et al.
patent: 4009941 (1977-03-01), Verdijk et al.
patent: 4027328 (1977-05-01), Lessman
patent: 4151554 (1979-04-01), Tucker
patent: 4163990 (1979-08-01), Hodges
patent: 4268119 (1981-05-01), Hartmann

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