Video projection system

Details Video projection system Video projection system

2006-10-31

2006-10-31

Alavi, Ali (Department: 2875)

Illumination

Light source and modifier

Adjustable or repositionable modifier

C362S293000, C353S084000, C348S743000

Reexamination Certificate

active

07128441

ABSTRACT:
The invention relates to a video projection system comprising at least a light source coupled to a reflector for focusing the light beam, a motor-driven color wheel having a plurality of light-transmitting segments, at least some of said segments being dichroic filters for the colors red, green, and blue, while the speed of rotation of said wheel can be modified by a control, a lens system imaging the focused light beam onto a display, a display system comprising at least a display and a display control, and a projection lens, wherein the video projection system has a video projection mode and a lighting mode, and in addition the color wheel is stationary in the lighting mode and at least one segment of the color wheel can be given a defined position in the beam.

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patent: 3813421 (1989-11-01), None
patent: 2075720 (1981-11-01), None

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