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Rear-projection display screen

A display screen and projection technology, which is applied in the direction of instruments, projection devices, optics, etc., can solve the problems of complicated pasting operations, damage to the lens, etc.

Inactive Publication Date: 2005-03-02
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sticking work of this adhesive tape is complicated, and the lens may be damaged during the work.

Method used

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  • Rear-projection display screen
  • Rear-projection display screen
  • Rear-projection display screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] figure 1 and figure 2 A schematic diagram of an example of the rear projection display screen of the present invention is shown. figure 1 The shown rear projection display screen consists of a Fresnel lens sheet 1 and a lenticular lens sheet 2, and protrusions 4 are provided on the side of the lenticular lens sheet 2 in the area outside the screen of the Fresnel lens sheet 1. Such as figure 1 As shown, the Fresnel lens sheet 1 side of the lenticular lens sheet 2 is provided with recesses corresponding to the protrusions 4 . Adopt the method that makes lenticular lens sheet 2 be embedded in Fresnel lens sheet 1, fix both. With this, the work of pasting the outer peripheries of the two thin plates with an adhesive tape is no longer necessary. figure 2 The shown rear projection display screen is composed of a Fresnel lens sheet 1 and a lenticular lens sheet 2, and on one side of the lenticular lens sheet 2 in the area outside the picture of the Fresnel lens sheet 1, ...

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PUM

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Abstract

The invention provides a rear-projection type screen in which, without the need for a tape-attachment operation on the outer circumferential part of the lens sheets, the top of the Fresnel lens can be prevented from being pared by the abrasion caused by the vibration during transportation.

Description

technical field [0001] The present invention relates to a rear projection display screen that can be used in a rear projection television. Background technique [0002] As a conventional rear projection display panel that can be used in a rear projection television, there is a two-piece display panel that combines a lenticular lens sheet 2 and a Fresnel lens sheet 1 as shown in FIG. 10 . In addition, as another example of the existing rear projection display screen, as shown in FIG. 11, a three-piece display screen combining a lenticular lens sheet 2, a Fresnel lens sheet 1, and a front panel 3 is known. . These existing rear projection display screens are formed by combining lenses made of different plastics such as more than two thicknesses and materials. For this reason, gaps are often generated between the constituent members due to variations in the expansion and contraction of the respective constituent members (lens sheet or front panel) due to changes in ambient te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/62G03B21/625
CPCG03B21/625G02B5/021G02B3/08G02B3/005
Inventor 猪狩德夫松崎一朗
Owner KURARAY CO LTD