Direct projection screen
A screen and direct projection technology, applied in the field of projection, can solve the problem of reflection of projected light to non-audience areas, and achieve the effect of good display effect and improved brightness uniformity
Pending Publication Date: 2021-05-21
APPOTRONICS CORP LTD
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Problems solved by technology
[0004] The present invention provides a direct projection screen to solve the technical problem that the direct projection screen in the prior art can only collimate the projection light in the horizontal direction, causing part of the projection light to be reflected to the non-spectator area
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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0036] The terms "first" and "second" in this application are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. Furthermore, the terms "include" and "have", as well as any va...
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The invention discloses a direct projection screen, the direct projection screen comprises a base layer and an optical structure layer arranged on the base layer, the optical structure layer comprises a plurality of optical structures arranged in an array, each optical structure comprises an incident plane attached to the base layer, and a first reflecting plane, a second reflecting plane, a third reflecting plane and a fourth reflecting plane connected with the incident plane, the first reflecting plane and the second reflecting plane are connected, are obliquely arranged relative to the incident plane and are used for collimating projection light rays incident from the incident plane in the vertical direction, and the third reflecting plane and the fourth reflecting plane are respectively connected with the first reflecting plane and the second reflecting plane and are used for reflecting the projection light rays incident from the incident plane in the horizontal direction. The projection light can be reflected to the audience area, so that the brightness uniformity of the direct projection screen can be improved, and the display effect of the direct projection screen is better.
Description
technical field [0001] The invention relates to the technical field of projection, in particular to a direct projection screen. Background technique [0002] The screen is an important factor affecting the projection display system, and it has a great influence on the image quality of the projection display. The Fresnel reflection on the screen surface is positively correlated with the incident angle, the larger the incident angle, the higher the Fresnel reflection. Most of the light reflected by the surface Fresnel cannot enter the viewer's field of view, resulting in a waste of energy. At the same time, due to the uneven Fresnel reflection on the surface, the brightness difference between the center area and the edge area of the screen surface is as high as more than 20%. [0003] The inventors of the present application have discovered in long-term research and development that in order to improve the brightness uniformity of the screen, a horizontal wire grid structu...
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Login to View More IPC IPC(8): G03B21/60
CPCG03B21/60
Inventor 王霖孙微唐晓峰胡飞李屹
Owner APPOTRONICS CORP LTD