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3-colored light straight hexagonal prism color-combination prism

A color prism and three-color light technology, applied in the field of photoelectric lighting and display, can solve the problems of high cost, small relative aperture of filter film, difficulty of filter film, etc., and achieve the effect of low manufacturing cost

Inactive Publication Date: 2008-06-04
QINGDAO NOVELBEAM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the X-combination prism of the background technology, the red, green, and blue three-color lights are all incident on the respective corresponding filter films at an incident angle of 45°, and such a large incident angle brings great impact on the production of the filter film. Difficulty, the relative pore size that the filter film can be applied to is small
In addition, the X-combination prism is made of four right-angle prisms glued together, which requires strict manufacturing process and high cost

Method used

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  • 3-colored light straight hexagonal prism color-combination prism
  • 3-colored light straight hexagonal prism color-combination prism
  • 3-colored light straight hexagonal prism color-combination prism

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1 One of straight hexagonal dichroic prisms.

[0024] This embodiment has the same structure as that described in the above-mentioned technical solution, and is characterized in that the main technical indicators are listed as follows:

[0025] The height and side lengths of the regular hexagon are 22mm and 12.7mm respectively

[0026] The center wavelength corresponding to the 50% transmittance of the first filter film 15 is 585nm±3nm and the center wavelength corresponding to the 50% transmittance of the second filter film 16 is 500nm±3nm.

[0027] The spectral transmittance characteristics of the first filter film 15 and the second filter film 16 are as follows: Figure 4 and Figure 5 shown.

[0028] working principle. Assume that in this embodiment, the first color light, the second color light and the third color light are blue light, green light and red light respectively, and the three color lights are respectively incident on the respective filte...

Embodiment 2

[0030] Embodiment 2 The second straight hexagonal dichroic prism.

[0031] The structure of this embodiment is identical to that of Embodiment 1 except for the following structure: the first filter film 15 and the second filter film 16 are depolarizing filter films.

[0032] Since the three colors of light are respectively incident on the corresponding filter film at an incident angle of 30°, the incident angle is relatively small, so the filter film used in Example 1 and the depolarizing filter film in Example 2 are not only difficult to manufacture Small, and can also reduce the maximum applicable F-number of the filter film and depolarization filter film.

[0033] Embodiment 3 One of the modifications of the color combining prism in Embodiment 1.

[0034]Present embodiment except having following structure, all the other structures are exactly the same as embodiment 1: the side length a=12.7mm of the original regular hexagonal bottom surface, the centroid distance d'= 9mm...

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Abstract

A three-color right six-prism color-combination prism belongs to the photoelectric illumination and display technical field, and is a right prism shape prism which is formed by gluing a first glass prism, a second glass prism, a third glass prism and a fourth glass prism and has the bottom surface as a regular hexagon. A second light filtering film is positioned between the first glass prism, the second glass prism and the third glass prism, the fourth glass prism; a first light filtering film is positioned between the first glass prism, the fourth glass prism and the second glass prism, the third glass prism; the first light filtering film and the second light filtering film intersect with an included angle of 60 degrees; the intersection line of the first light filtering film and the second light filtering film coincides with a central axis of the color-combination prism; the incident plane of three-color incident light and the exit plane of color combining light are respectively a first incident plane, a second incident plane, a third incident plane and an exit plane. The present invention has the advantages that the light filtering films has little manufacture difficulty and large in relative pore diameter to which the light filtering films can be applied, etc, and is especially suitable to be used as three-color light combining illumination in the display systems such as LCD, DLP and LCOS.

Description

technical field [0001] The invention relates to a three-color light straight hexagonal prism, more precisely, a device for combining three-color light with a straight hexagonal prism, which belongs to the technical field of photoelectric lighting and display. Background technique [0002] The existing trichromatic light X-type color combination prism (X combination prism) adopts a cube-shaped X combination prism with two orthogonal filter films in the middle. See figure 1 . Now take red, green and blue photosynthetic color into white light as an example to illustrate. The filter film f1 reflects blue light and transmits red and green light; the filter film f2 reflects red light and transmits blue and green light. When the red, green and blue light enters the X-combination prism from their respective incident surfaces, they are combined into white light after being transmitted and reflected by the filter films f1 and f2. In the X-combination prism of the background techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/10G02B5/04
Inventor 辜长明郑耀沈荣桂刘啸虎楼云中
Owner QINGDAO NOVELBEAM TECH
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