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Three-color light color-combination combined prism with high high-reflection film

A high-reflection film, three-color light technology, used in prisms, optics, optical components, etc., can solve the problems of difficulty and high cost of filter films, and achieve the effect of improving the utilization rate and shortening the optical path.

Active Publication Date: 2008-06-04
淄博海泰新光光学技术有限公司
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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 filter film can be applied with a relatively small aperture
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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  • Three-color light color-combination combined prism with high high-reflection film
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  • Three-color light color-combination combined prism with high high-reflection film

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1 is one of the color combination prisms. The composite prism of the present embodiment has the same structure as the composite prism described above, and its main technical indicators are listed as follows:

[0026] The base length of an isosceles triangle is 8.66mm, and the waist length is 5mm;

[0027] The side length of an equilateral triangle is 5mm, and the height of the prism is 14.6mm;

[0028] The central wavelength corresponding to the 50% transmittance of the first filter film 17 is 585nm±3nm;

[0029] The central wavelength corresponding to the 50% transmittance of the second filter film 18 is 500nm±3nm.

[0030] The spectral transmittance characteristics of the first filter film 17 and the second filter film 18 are shown in Figure 5 and Image 6 .

[0031] The working principle of this embodiment. Assuming that in the color combining prism of Example 1, the first color light, the second color light and the third color light are blue light,...

Embodiment 2

[0032] Embodiment 2 The second color combination prism. The difference between the present embodiment and the first embodiment is that the second prism 12 and the fifth prism 15 are integrated, and the fourth prism 1 and the sixth prism 16 are integrated into a rectangular prism respectively.

[0033]The main technical indicators of the combined prism described in this embodiment: the length of the base of the isosceles triangle is 8.66mm, the length of the waist is 5mm, the length of the right angle side of the right triangle is 5mm, 8.66mm, and the height of the prism is 14.6mm; the first filter film The central wavelength corresponding to the 50% transmittance of 17 is 585nm±3nm; the central wavelength corresponding to the 50% transmittance of the second filter film 18 is 500nm±3nm, the first filter film 17 and the second filter film 18 The spectral transmittance characteristics of see Image 6 and Figure 7 .

[0034] The working principle of this embodiment. The propa...

Embodiment 3

[0036] Embodiment 3 is one of the combined color combination prisms. In this embodiment, the positions of the first filter film 17 and the second filter film 18 in Embodiment 1 are exchanged, and the positions of the green light incident surface and the white light exit surface are exchanged; see Image 6 , the main technical indicators of the combined prism described in the present embodiment: the base length of the isosceles triangle is 8.66mm, the waist length is 5mm, the side length of the equilateral triangle is 5mm, and the prism height is 14.6mm; the first filter film 17 The central wavelength corresponding to the 50% transmittance is 585nm±3nm; the central wavelength corresponding to the 50% transmittance of the second filter film 18 is 500nm±3nm, the spectra of the first filter film 17 and the second filter film 18 For transmittance characteristics, see Image 6 and Figure 7 .

[0037] working principle. Assume that in the above-mentioned color combining prism, th...

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Abstract

The present invention relates to a three-color light color combining component prism provided with high-reflection film, which is a right prism shape component prism that consists of six prisms, two layers of light filtering films and two layers of high-reflection films and has the bottom surface as a rectangle with two circumscribed isoceles triangles. All the surfaces of the compound prism are polished surfaces; the two layers of light filtering films mutually intersect in the component prism, having an included angle of 60 degrees; a first light filtering film reflects a first-color light, and has a second-color light and a third-color light permeate; a second light filtering film reflects the third-color light, and has the first-color light and the second-color light permeate; the medial surfaces of two right prisms with the bottom surface as an isoceles triangle are respectively plated with the two layers of high-reflection films. As the three-color light is reflected to respective light filtering films all in an incident angle of 30 degrees, the difficulty of manufacturing the light filtering films is decreased, and the light energy utilization ratio of the three-color light is improved. The utilization of the internal reflection of the high-reflection films ensures that light is reflected to the light filtering films in a smaller incident angle, and especially the green light is short in optical path and high in light energy utilization ratio. In addition, the light filtering films are easy to be made into polarization eliminating light filtering films.

Description

technical field [0001] The invention relates to a three-color photosynthetic color combined prism with a high reflection film, which belongs to the technical field of photoelectric lighting and display. Background technique [0002] The existing trichromatic light X-type color 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 transmitted and reflected by the filter films f1 and f2, and are combined into white light to exit. In the X-combination prism of the background technology, the red, green, and blue three-color lights are all incident on the ...

Claims

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Application Information

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IPC IPC(8): G02B27/10G02B5/04G02B5/26
Inventor 辜长明郑耀沈荣桂刘啸虎楼云中
Owner 淄博海泰新光光学技术有限公司
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