Total reflection prism and projector with the same
AssigneeLG Electronics Inc.
InventorSeung Gyu Lee
Life of this patent
Estimating the term…
Abstract
Total reflection prism and projector with the same, wherein the total reflection prism totally reflects beams of lights from an optical system once toward a projection lens, thereby minimizing a loss of luminance caused by the total reflection.
Claims13
A total reflection prism in a projector comprising a light source, and an optical system for extracting particular color beams from beams of lights from the light source and guiding the extracted color beams to a prism, wherein the prism makes one time of total reflection of the beams from the optical system to transmit to a projection lens.
A projector with a total reflection prism comprising:
- a light source for emitting beams of lights;
- a color wheel for receiving the beams from the light source, splitting color beams from the beams in succession, and transmitting the color beams;
- a transmission part for guiding the color beams to the prism;
- a display for producing a picture beam according to a video signal by using the color beams from the transmission part;
- a prism arranged between the transmission part and the display for guiding the color beams from the transmission part to the display, and reflecting the picture beam from the display;
- and,
- a projection lens for enlarging, and projecting the picture beam.
Dependencies are inferred from the claim text.