Optical element rotating device for liquid-crystal

Details Optical element rotating device for liquid-crystal Optical element rotating device for liquid-crystal

1994-07-29

1996-08-27

Dowling, William C.

Optics: image projectors

Prism in light path

359198, 359211, G02B 2600

Patent

active

055506054

ABSTRACT:
A liquid-crystal projector with a light source, a projection lens set, and a liquid-crystal panel arranged between the light source and the projection lens set for displaying a video signal included in an odd field and a video signal included in an even field alternately at a predetermined period of time by the same pixels thereof in synchronization with a vertical synchronizing signal in the video signal. The liquid-crystal projector includes a wedge-shaped prism rotating device arranged between the projection lens set and a screen. The wedge-shaped prism rotating device includes an electromagnetic solenoid for converting a reciprocating motion of a solenoid plunger to a periodic rotational motion of a wedge-shaped prism about its optic axis clockwise and counterclockwise. The liquid-crystal projector also includes a control unit associated with the prism rotating device, for producing the periodic rotational motion in synchronization with the vertical synchronizing signal, so that both projected positions of picture images on the screen, each image included in either one of the odd and even fields, are offset to each other by one-pixel.

REFERENCES:
patent: 3981574 (1976-09-01), Jesensky et al.
patent: 4080056 (1978-03-01), Jesensky et al.
patent: 5184245 (1993-02-01), Murakami et al.

Affiliated with

Also associated with

Rating

Optical element rotating device for liquid-crystal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical element rotating device for liquid-crystal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical element rotating device for liquid-crystal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1059272