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Projection screen and projection system

A technology of projection screen and prism layer, applied in the field of projection, can solve the problems of narrow viewing angle of projection screen, affecting user's viewing experience, and decreased display brightness, etc.

Active Publication Date: 2019-11-05
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, it is precisely because of its Fresnel microstructure that the viewing angle of the projection screen is relatively narrow, and the viewing effect is better when viewing the projection screen with a frontal view. Watching the projection screen, its display brightness will be greatly reduced, affecting the user's viewing experience

Method used

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  • Projection screen and projection system

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Embodiment Construction

[0033] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a projection screen and a projection system, which are used to increase the viewing angle of the projection screen in the horizontal direction.

[0034] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar structures in the drawings, and thus their repeated descriptions will be omitted. The words expressing position and direction described i...

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Abstract

The invention discloses a projection screen and a projection system. The projection screen comprises a light transmitting layer, a diffusion layer, a Fresnel lens layer and a reflective layer that arearranged in sequence along an incident direction of light, and further comprises a prism layer between the light transmitting layer and the Fresnel lens layer. The prism layer comprises a plurality of raised ribs extending in a horizontal direction of the projection screen and is used to converge incident light in a direction perpendicular to the extending direction of the raised ribs. The prismlayer can converge the light incoming to the projection screen in a direction perpendicular to the extending direction of the raised ribs, namely, a viewing angle in a vertical direction becomes smaller, so that a viewing angle in the extending direction of the raised ribs becomes larger according to the law of conservation of energy. Therefore, as long as the raised ribs are extended in a direction in which a viewing angle needs to be enlarged, the viewing angle in the direction can be enlarged, allowing a viewer to have a larger moving range within the viewing angle and view an image in theprojection screen in the viewing angle more clearly.

Description

technical field [0001] The invention relates to the field of projection technology, in particular to a projection screen and a projection system. Background technique [0002] In the field of projection display, especially the field of ultra-short-focus laser projection display that has attracted more attention in recent years, in order to achieve better display brightness and display effect, projection systems generally use projection screens with Fresnel microstructures. This kind of projection screen can achieve higher gain and smaller viewing angle, so as to maximize the display brightness of viewers when they face the projection screen. [0003] However, it is precisely because of its Fresnel microstructure that the viewing angle of the projection screen is relatively narrow, and the viewing effect is better when viewing the projection screen with a frontal view. Watching the projection screen, its display brightness will be greatly reduced, affecting the user's viewin...

Claims

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Application Information

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IPC IPC(8): G03B21/60G03B21/602
CPCG03B21/60G03B21/602
Inventor 赵飞
Owner QINGDAO HISENSE LASER DISPLAY CO LTD
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