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Rear-projection projection screen and projector using the projection screen

A technology for projectors and screens, applied in the field of projectors, can solve the problems of reducing external light reflection, no function, etc.

Inactive Publication Date: 2004-05-19
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, this kind of projection screen has no other function except to reduce the reflection of external light

Method used

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  • Rear-projection projection screen and projector using the projection screen
  • Rear-projection projection screen and projector using the projection screen
  • Rear-projection projection screen and projector using the projection screen

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Embodiment Construction

[0020] The invention will be described in more detail below with reference to the shown figures, but the invention is not limited to the shown embodiments.

[0021] see Figure 4 , according to an embodiment of the present invention, the rear projection projection screen 40 includes: a will come from figure 1 The divergent light of the projection lens unit 13 in the projection lens unit 13 converges into a Fresnel lens 41 of a bundle of parallel light; a biconvex lens 43 that is installed on the front surface of the Fresnel lens 41 and forms an image by focusing the light passing through the Fresnel lens 41 a protection panel 50 installed on the front surface of the lenticular lens 43 to protect the Fresnel lens 41 and the lenticular lens 43 ; and a reflection reducing portion 60 formed on one surface of the protection panel 50 . The reflection attenuation section 60 attenuates from Figure 5 Reflecting the light input by the external light source 30 in the center, and emitt...

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Abstract

A screen for a projector includes a Fresnel lens which concentrates incident light, a lenticular lens arranged on a front surface of the Fresnel lens and which forms an image by focusing light passing through the Fresnel lens, a protective panel installed on a front surface of the lenticular lens and which protects the lenticular lens, and a reflection reducing portion formed on one surface of the protective panel, wherein the reflection reducing portion reduces reflection of light by diffusely reflecting the light, and wherein the reflection reducing portion includes a core member capable of being emitted externally.

Description

technical field [0001] The present invention relates to a rear-projection projection screen and a projector using the projection screen, in particular to a rear-projection projection screen capable of reducing the reflection of external light and emitting functional substances to the audio-visual space, and a projector using the projection screen Projector. [0002] This application claims priority to Korean Patent Application No. 2002-62696 filed with the Korean Intellectual Property Office on October 15, 2002, the contents of which are incorporated herein by reference in their entirety. Background technique [0003] Generally, a projector generates an image through an image forming unit and projects it onto a screen. Projectors are classified into front projection projectors and rear projection projectors according to the method of enlarging and projecting images onto a screen. [0004] see figure 1 A typical rear projection projector includes a housing 10; an imaging s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/08G03B21/10G03B21/56G03B21/62G03B21/625
CPCG03B21/60G03B21/56
Inventor 尹锡溢黄奎焕
Owner SAMSUNG ELECTRONICS CO LTD
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