Viewfinder for video cameras

Details Viewfinder for video cameras Viewfinder for video cameras

1992-06-11

1996-05-14

Gellner, Michael L.

354219, G03B 1718, G03B 1302

Patent

active

055172784

ABSTRACT:
A viewfinder suited for use in a video camera, wherein rays of light emitted at a large solid angle from a minute light emitting area of a light emitting element are converted by a condenser lens into a bundle of generally parallel rays of light having a narrow directionality before they enter a liquid crystal display. The liquid crystal display modulates the rays of light emerging from the condenser lens according to a video signal to effect an image display. The displayed image is magnified by a magnifying lens. The liquid crystal display is of a type wherein an optical image is formed as a function of a change in state of light scattering and may be a polymer dispersed liquid crystal display, a liquid crystal panel utilizing a dynamic scattering mode, a ferro-electric liquid crystal panel using a scattering mode or a display panel utilizing PLZT.

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patent: 5092672 (1992-03-01), Vanderwerf
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patent: 5134491 (1992-07-01), Muraji et al.
patent: 5161025 (1992-11-01), Nakao
patent: 5206747 (1993-04-01), Wiley et al.
patent: 5286408 (1994-02-01), Naemura et al.
patent: 5299289 (1994-03-01), Omae et al.
patent: 5313289 (1994-05-01), Nagane et al.

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