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Back-projection screen with multilayer microlens structure and manufacturing method

A manufacturing method and technology of microlenses, applied in optics, instruments, projection devices, etc., can solve the problem that the overall picture effect of the rear projection screen is not very ideal, and achieve excellent overall picture quality, high uniformity of viewing angle, and elimination of solar effect Effect

Inactive Publication Date: 2005-04-06
成都宽显科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the overall picture effect of the current rear projection screen is still not very satisfactory.

Method used

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  • Back-projection screen with multilayer microlens structure and manufacturing method
  • Back-projection screen with multilayer microlens structure and manufacturing method
  • Back-projection screen with multilayer microlens structure and manufacturing method

Examples

Experimental program
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Embodiment 1

[0033] As shown in Figure 6, the rear projection screen of the multilayer microlens structure of the present invention is a microlens layer formed by superposition of more than two layers of microlenses 4, and both sides of the two refraction surfaces of each layer of microlenses 4 are respectively High-refractive-index material 41 and low-refractive-index material 5. High-refractive-index material refers to light-dense material, such as glass, resin, etc.; and low-refractive-index material refers to a material with lower refractive index than high-refractive-index material. That is, the light-reducing substance, such as air or other low-refractive-index optical media, when it is air, has lower material cost and manufacturing cost.

[0034]Light will be refracted when it enters from a material with a high refractive index into a material with a low refractive index and when it enters a material with a high refractive index from a material with a low refractive index. The large...

Embodiment 2

[0042] In this embodiment, a resin material is used as a high-refractive-index substance, and air is used as a low-refractive-index substance to provide a method for manufacturing a rear projection screen with a multilayer microlens structure:

[0043] Use resin materials with high light transmittance and high refractive index as the base material, and the thickness is preferably 0.1-0.2mm. After the resin surface is treated by the current mature frosting process, the resin surface is formed as shown in Figure 13 or Figure 14. Lenses in various natural shapes. It can be frosted on one side as shown in Figure 13, or it can be frosted on both sides as shown in Figure 14. In this way, the microlens layer is fabricated. After cutting the multi-layer microlens layers according to the predetermined size, lay them flat and stack them neatly, and press a layer of heavy boards of the same size to make them close to each other and discharge excess air. Then each lens layer is adhered ...

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Abstract

This invention discloses a projection screen with multi-layer lens, which is composed of multiple overlapped micro lens layers, wherein, the two reflection surfaces of each micro lens are separately high reflection rate substance and low reflection rate substance. This invention also discloses the process method of this projection screen.

Description

technical field [0001] The present invention relates to television imaging technology, specifically a rear projection screen technology, and relates to the screen structure and manufacturing method. Background technique [0002] The rear projection screen is a key component of a rear projection TV, as shown in Figure 1, its main function is to make the light from each image point (pixel) reach the audience after the light from the projection lens 1 inside the system forms an image on the screen 2. The direction of the light is scattered at the largest angle, so that the light of each image point can enter the audience's eyes, and the audience can watch the image of the entire screen. It is understandable that if the rear projection screen does not have this kind of scattering ability, that is to say, the light rays of each image point are still emitted according to their respective incident light directions, it is difficult for these light rays to enter the audience's eyes a...

Claims

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Application Information

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IPC IPC(8): G03B21/56G03B21/62
CPCG03B21/62
Inventor 罗筱泠
Owner 成都宽显科技有限责任公司