Projector

Abstract

Projector is provided, including a light source, a color wheel for splitting two, or more than two color beams from the beam from the light source, a rod lens for making a distribution of the color beam from the color wheel uniform, a polarization beam converter for converting the color beams into particular polarization beams, an optical system for focusing the color beams converted into the particular polarization beams, a color selecting plate for converting particular polarization color beams in the focused color beams, two displays for reflecting the color beams from the color selecting plate differently according to a video signal to form picture beams, a polarization beam sprite prism for supplying a particular color beam having polarization converted at the color selecting plate to one of the displays, and color beams of other colors to the other display, and a projection lens for enlarging, and projecting the picture beams.

Description

technical field [0001] The present invention relates to a projector. Background technique [0002] The projector magnifies and projects the small image on the small display in the projector to the large screen through a lens system to display a large image. The one in which the image is displayed in front of the screen is called the front projection type, and the one in which the image is displayed behind the screen is called the rear projection type. Projection TV is representative of the latter type. LCDs (Liquid Crystal Displays) and DMDs (Digital Micro Mirror Devices, etc.) can be used as small displays in projectors that display small images. LCDs have a polarization converter to display images with linearly polarized light. figure 1 Such an existing projector is shown. [0003] see figure 1 , this existing projector has: a lamp 1 that emits a light beam, a parabolic reflector 2 that reflects the light beam to the front of the lamp 1, a tr...

AI Technical Summary

Problems solved by technology

In order to increase this insufficient amount of light, it is necessary to widen the light waveband, but the widened light waveband will reduce the purity of the color

[0021] Moreover, it is well known that the spectral distribution of the light sources of existing projectors is mainly insufficient in the amount of red light

However, existing projectors have no way to compensate for the lack of specific light, especially red light

Images