High efficient projection system and clour rotary method

A technology of projection system and monochromatic light, applied in the field of projection system, can solve problems such as poor optical efficiency

Inactive Publication Date: 2004-05-12
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The movement of the short axis of the light valve of the color bar (color rolling) is not well considered from the perspective of optical efficiency

Method used

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  • High efficient projection system and clour rotary method
  • High efficient projection system and clour rotary method
  • High efficient projection system and clour rotary method

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Embodiment Construction

[0024] In order to realize the color scrolling method of the present invention, a rectangular light valve is arranged so that its long axis is parallel to the beam splitting direction of the colored beam, which is the colored beam split by the beam splitter from the light emitted by the light source. In other words, since the color separation direction is the same as the direction of the long axis of the light valve, color stripes are formed in the direction of the long axis of the light valve. Color scrolling is performed by the color scrolling unit in the direction of the long axis of the light valve.

[0025] The invention applies to all projection systems that produce color images in a rolling method. According to an exemplary and non-limiting embodiment of the present invention, the projection system includes: a light source, a beam splitter for dividing the light emitted by the light source into colored beams according to wavelengths, and a beam splitter for rolling the ...

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Abstract

A highly efficient projection system and a color scrolling method are provided. In the color scrolling method, first, an optical splitter splits a beam emitted from a light source into individual color beams. Next, a rectangular light valve is disposed such that its long axis is along the direction into which the optical splitter splits the beam. Thereafter, the individual color beams are scrolled in the long axial direction of the light valve. The color scrolling in the long axial direction can increase light efficiency much more than a color scrolling performed in a short axial direction.

Description

technical field [0001] The invention relates to a projection system with higher light efficiency and a color rolling method by performing color rolling in the direction of the long axis of a light valve. Background technique [0002] Projection systems can be classified into 3-plate projection systems and single-plate projection systems according to the number of light valves for controlling on / off operations of light beams emitted from high-output lamps on a pixel-by-pixel basis and forming images. The optical system of the single-plate projection system is smaller than that of the 3-plate projection system, but the light efficiency provided by it is only 1 / 3 of the light efficiency of the 3-plate projection system, because the R, G and B (red) from the color separation of white light , green and blue) shades are used one by one. Therefore, it is necessary to increase the optical efficiency of the single-panel projection system. [0003] In a common single-panel projectio...

Claims

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Application Information

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IPC IPC(8): G02F1/13G02B27/18G03B21/00H04N9/31
CPCH04N9/3197H04N9/3117H04N9/31
Inventor 金大式赵虔皓金成河
Owner SAMSUNG ELECTRONICS CO LTD
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