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Total internal reflection prism

A total internal reflection prism and total reflection technology, applied in the field of optical systems, can solve the problems of not breaking the symmetrical structure, tilt and chromatic aberration axial symmetry damage, etc., to achieve low price, improve reflection and transmission efficiency, and prevent low light efficiency. Effect

Inactive Publication Date: 2007-07-18
LG ELECTRONICS(NANJING) PLASMA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] The second object of the present invention is to provide a total internal reflection prism that does not break the symmetrical structure even if it does not have a different medium for the prism, and can solve the problems of tilt and chromatic aberration and the destruction of axial symmetry.

Method used

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Embodiment Construction

[0046] Embodiments of the total internal reflection prism of the present invention will be described below with reference to the accompanying drawings.

[0047] Fig. 1 is the first embodiment of the present invention reflecting the principle of the total internal reflection prism. The total internal reflection prism used at this time is a rectangular prism.

[0048]As shown in Figure 1, the illuminating light 50a formed by the light source such as lamp (not shown) obliquely enters the slope portion 20 of the total internal reflection prism and is refracted, and the illuminating light of this refraction is emitted to the first part of the total internal reflection prism 90 again. Surface 10 performs refraction. Then, the emitted illuminating light 50 b is irradiated onto the reflective panel 40 .

[0049] At this time, the reflective panel 40 adjusts the direction or intensity of the reflected light to reflect according to the video signal.

[0050] And the illumination ligh...

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Abstract

A full internal reflection prism consists of slope unit for transmitting or fully reflecting light according to light incoming critical angle, the first surface for outgoing the first illumination light passed slope unit and for incoming the second illumination light regulated by reflection plate onto slope unit, and the second surface for outgoing the second illumination light being fully reflected by slope unit onto imaging system.

Description

technical field [0001] The present invention relates to an optical system made of reflective elements, in particular to a total internal reflection (TIR: Total Internal Reflection) prism that separates light in the same space. Background technique [0002] Spatial light modulators, which are generally used to project optical energy onto a screen, can be used in many fields such as optical communication, image processing, and information display devices. Generally, such devices can be divided into direct-view image display devices and projection-type image display devices according to the method of displaying light energy on the screen. [0003] For example, a cathode ray tube (CRT: Cathode Ray Tube) is a direct-view image display device. This type of cathode ray tube device is called a Braun tube. Although the picture quality is good, the problem is that its weight and volume increase. [0004] In addition, for example, liquid crystal display (Liquid Crystal Display: LCD), ...

Claims

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Application Information

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IPC IPC(8): G02B27/14H04N9/31H04N5/74
Inventor 文熙钟
Owner LG ELECTRONICS(NANJING) PLASMA CO LTD
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