Screen, rear projector, projection system, and image display unit

A screen and image display technology, which is applied in the field of rear projection projectors, screens, projection systems and image display devices, can solve problems such as blurred images, achieve the effects of reducing flicker, suppressing noise, and reducing energy consumption parts

Inactive Publication Date: 2010-06-02
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the position of the outline of the image in the horizontal direction also changes, causing image blurring.

Method used

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  • Screen, rear projector, projection system, and image display unit
  • Screen, rear projector, projection system, and image display unit
  • Screen, rear projector, projection system, and image display unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0096] Figure 1A is a perspective view showing a schematic configuration of the rear projection projector 120 of this embodiment, Figure 1B yes Figure 1A A side cutaway view of rear projection projector 120 is shown. The rear projection projector 120 of this embodiment is a rear projection type projector that modulates light emitted from a light source with a light modulation element, and enlarges and projects the modulated light on the screen 20 .

[0097] like Figure 1A As shown, the rear projection projector 120 has a screen 20 for projecting images; and a cabinet 90 installed on the back of the screen 20 . A front panel 88 is provided on the box 90 below the screen 20 , and openings 38 for outputting sound from speakers are provided on the left and right sides of the front panel 88 .

[0098] Next, the internal structure of the housing 90 of the rear projection projector 120 will be described.

[0099] like Figure 1B As shown, a projection optical system 150 is ...

Embodiment approach 2

[0127] Below, refer to Figure 6 Embodiment 2 of the present invention will be described. Figure 6 is a schematic configuration diagram of the screen main body in this embodiment, Figure 7A , 7B is an exploded view of the main body of the screen.

[0128] like Figure 6 As shown, the screen main body 40 is configured to give flow in a direction perpendicular to the flow direction of the diffuser 34 flowing in the flow path 41 . like Figure 6 ~ 7B As shown, a plurality of wall portions 42 (third partition walls) perpendicular to the partition walls 27 and wall portions 43 (third partition walls) perpendicular to the partition walls 28 are provided. The wall portions 42, 43 extend vertically in the left-right direction (x direction) from the front and back surfaces of each partition wall 27, 28, and have a length that never touches the opposing partition wall 27, 28, that is, has a length longer than that of the adjacent partition wall 27, 28. 28 intervals between short...

Embodiment approach 3

[0133] Below, refer to Figure 8 ~ 9B Embodiment 3 of the present invention will be described. Figure 8 is the cross-sectional view of the screen body in the focus direction (z direction), Figure 9A , 9B is an exploded view of the main body of the screen.

[0134] The screen main body 40 in the above-mentioned embodiment is a screen main body in which the diffuser 34 flows in the left and right directions while reciprocating in the vertical direction of the screen main body 40 , but the configuration of the screen main body 50 in the present embodiment is as follows: Figure 8 As shown, the scatterers 34 flow toward the left-right direction (x-direction) of the screen main body 50 while reciprocating in the focusing direction (z-direction) between the opposing light-transmitting plates 23 .

[0135] like Figure 9A As shown, the partition walls 51 and 52 of the present embodiment have the same length, and the length in the longitudinal direction corresponds to the length...

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PUM

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Abstract

A screen that displays images as a result of receiving projection light, includes: a plurality of plate components that are optically transparent and are provided apart from each other; a scatterer that is placed in a light scattering space that is formed between the plurality of plate components, and is formed by dispersing a light scattering material in a gas or liquid dispersion medium; a flowpath that allows the scatterer to flow through the light scattering space; and a flow device that causes the scatterer to flow through the light scattering space.

Description

technical field [0001] The invention relates to a screen, a rear projection projector, a projection system and an image display device. Background technique [0002] In recent years, projectors are rapidly gaining popularity. In addition to front projection type projectors mainly used in business presentation purposes, rear projection projectors have recently been increasingly recognized as large televisions (PTV: Projection Television). Compared with direct-view displays such as LCD TVs and PDPs, the biggest advantage of the projection method is that it can provide products with the same screen size at a low price. However, there is a tendency to reduce the price of the direct-view type, and higher image quality performance is also required in the projector display device. [0003] The projector displays images on the screen by irradiating light emitted from a light source such as an arc lamp on the light modulation element of the liquid crystal light valve, and projectin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/56G03B21/00G03B21/60H04N5/74G02F1/13G03B21/10G03B21/62G03B21/625
Inventor 关秀也木下悟志
Owner SEIKO EPSON CORP
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