Image projector
AssigneeLG Electronics Inc.
InventorSeung Gyu Lee
Life of this patent
Estimating the term…
Abstract
Image projector including a lamp for emitting beams of lights, a color wheel for splitting particular color beams in succession from the beams of lights, a rod lens for making distribution of the color beams from the color wheel uniform, a polarized beam converter for converting the color beams into beams of a particular pole, an optical system for focusing the color beams converted into beams of a particular pole, a display for producing a picture beam of a video signal according to the video signal by using the color beams from the optical system, a polarization beam sprite prism between the optical system and the display for reflecting the color beams from the optical system and transmitting the picture beams from the display, and a projection lens for enlarging, and projecting the picture beams.
Claims14
An image projector comprising:
- a light source having an elliptical reflector;
- a color filter that transmits a predetermined beam of light of a predetermined wavelength from beams of light focused from the light source;
- a reflective plate that reflects the predetermined beam of light transmitted through a color filter;
- a rod lens that converges the predetermined beam of light from the reflective plate to make a distribution of the predetermined beam of light uniform;
- a first illumination lens part that diverges the predetermined beam of light of a uniform distribution from the rod lens, and focuses the predetermined beam of light onto a plurality of focusing points;
- a polarization beam sprite array that polarizes the predetermined beam of light from the first illumination lens in a predetermined direction;
- a second illumination lens part that focuses the polarized beam of light from the polarization beam sprite array;
- a polarization prism having a polarization split plane for transmitting or reflecting the focused beam of light;
- a reflection type display for producing a picture beam according to a video signal by using a reflected beam of light;
- and
- a projections lens for enlarging and projecting the picture beam.
An image projector comprising:
- a light source having an elliptical reflector;
- a color filter that transmits a particular beam of light from beams of light focused from the light source;
- a reflective plate that reflects the particular beam of light of a wavelength transmitted through the color filter;
- a rod lens that converges the beam of light from the reflective plate to make a distribution of beam uniform;
- a fist illumination lens part that diverges the beam of light of a uniform distribution from the rod lens, and focuses the beam of light onto a plurality of focusing points;
- a polarization beam sprite array that polarizes the beam of light from the first illumination lens in particular direction;
- a transmission-type display that produces a picture beam according to a video signal using a polarization split beam of light;
- and
- a projection lens for enlarging, and projecting the picture beam.
Dependencies are inferred from the claim text.