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rear projection device

A rear projection and projector technology, applied in the field of rear projection devices, can solve the problems of narrow frame, affecting the screen display effect, thick thickness, etc., and achieve the effect of compact structure, small volume and less space

Active Publication Date: 2018-04-06
徐州奕创光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the thickness of the rear projection system is relatively thick, which is not suitable for general household use, but its frame is narrow, which is suitable for splicing multiple images on a large screen
[0003] However, the existing rear projection device used as splicing can still clearly see its frame, which affects the overall display effect of the screen after splicing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: a kind of rear projection device, Fig. 1 (a) is the front view of the rear projection device of this embodiment, screen 1 is not shown among the figure, Fig. 1 (b) is the top view of the rear projection device of this embodiment.

[0017] Including screen 1 and projection unit. Screen 1 is transparent screen 1, selects glass screen 1 in the present embodiment, also can be plexiglass screen 1; Projection unit comprises first projector 2, second projector 3, first reflector 4 and second reflector 5 ; The first reflective mirror 4 and the second reflective mirror 5 are coated with a high reflective film, the reflectivity of the high reflective film> 90%, the high reflective film in this embodiment is a metal film, and the high reflective film can also be a dielectric film.

[0018] The light beam emitted by the first projector 2 is reflected to the screen 1 by the first reflector 4 to form the first light field 6, and the light beam emitted by the second proj...

Embodiment 2

[0021] Embodiment 2: a kind of rear projection device, Fig. 2 (a) is the front view of the rear projection device of this embodiment, screen 1 is not shown in the figure, Fig. 2 (b) is the top view of the rear projection device of this embodiment.

[0022] Including screen 1 and projection unit. Screen 1 is transparent screen 1, selects glass screen 1 in the present embodiment, also can be plexiglass screen 1; Projection unit comprises first projector 2, second projector 3, first reflector 4 and second reflector 5 ; The first reflective mirror 4 and the second reflective mirror 5 are coated with a high reflective film, the reflectivity of the high reflective film> 90%, the high reflective film in this embodiment is a metal film, and the high reflective film can also be a dielectric film.

[0023] Both the first reflector 4 and the second reflector 5 are coated with a polarized reflective film; wherein the polarized film of the first reflector 4 reflects the first light polariz...

Embodiment 3

[0031] Embodiment 3: as image 3 As shown, a rear projection device includes a screen 1 and a projection unit. Screen 1 is transparent screen 1, selects glass screen 1 in the present embodiment, also can be plexiglass screen 1; Projection unit comprises first projector 2, second projector 3, first reflector 4 and second reflector 5 ; The first reflective mirror 4 and the second reflective mirror 5 are coated with a high-reflection film, the reflectivity of the high-reflection film is > 90%, the high-reflection film in this embodiment is a metal film, and the high-reflection film can also be a dielectric film; Both the front of the lens of the first projector 2 and the front of the lens of the second projector 3 are provided with a polarized light conversion device 8, compared with embodiment 2, the added polarized light conversion device 8 of this embodiment can improve the light efficiency by 20%. -30%.

[0032] Both the first reflector 4 and the second reflector 5 are coate...

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Abstract

The invention discloses a rear projection device, which comprises a screen and a projection unit. The projection unit comprises a first projector, a second projector, a first reflector and a second reflector. The light beam emitted by the first projector is reflected by the first reflector. The mirror is reflected to the screen to form the first light domain, and the light beam emitted by the second projector is reflected to the screen by the second reflector to form the second light domain, and the edge of the first light domain and the edge of the second light domain have a common side. The rear projection device provided by the present invention can realize seamless splicing of multiple images on a large screen, so that the images displayed on the screen are more integrated and beautiful; it avoids the visual barrier caused by the frame blocking the image, and has more advantages. Rich expressiveness.

Description

technical field [0001] The invention relates to a rear projection device, in particular to a rear projection device. Background technique [0002] "Rear projection" refers to rear projection, which is a display system that integrates the screen and projection system under the guise of projection and reflection principles. In the projection display device, the projection display is divided into front projection (Front Projection) and rear projection according to its projection method. The most direct application of front projection is a projector, which refers to the projection of light onto the front of the screen for display. The principle of rear projection is simply to install the projector at the bottom of the fuselage, and the signal is reflected and projected to the back of the translucent screen for display. Rear-projection TV is the product of this principle. Due to the integration of projector and screen, users of rear-projection TV do not need to make optical adj...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/28G03B37/04
CPCG03B21/28G03B37/04
Inventor 王欢
Owner 徐州奕创光电科技有限公司
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