High dynamic range short focal length projection system

A high dynamic range, projection system technology, applied in optics, instruments, projection devices, etc., can solve problems such as projection screen reflection, image overexposure, affecting imaging clarity, etc., to achieve the effect of improving clarity and ensuring clear imaging

A high dynamic range, projection system technology, applied in optics, instruments, projection devices, etc., can solve problems such as projection screen reflection, image overexposure, affecting imaging clarity, etc., to achieve the effect of improving clarity and ensuring clear imaging

CN109031878AInactive Publication Date: 2018-12-18苏州瑞鸥艾斯显示科技有限公司
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  • High dynamic range short focal length projection system

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[0018] The present invention will be described in detail below in conjunction with the implementations shown in the drawings, but it should be noted that these implementations are not limitations of the present invention, and those of ordinary skill in the art based on the functions, methods, or structural changes made by these implementations Equivalent transformations or substitutions all fall within the protection scope of the present invention.

[0019] Such as figure 1 As shown, the high dynamic range short focal length projection system of the present invention includes: a projection device and a projection screen.

[0020] The projection device is used to project an image on a projection screen, and specifically includes: an exposure module 1 , an HDR image generation module 2 , a projection imaging module 3 , a refraction lens group 4 , and an aspheric mirror 5 .

[0021] In order to achieve clear imaging, the projection device adopts HDR technology for projection ima...

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Abstract

The invention provides a high dynamic range short focal length projection system, which comprises a projection device and a projection screen. The projection device comprises: exposure module, HDR image generation module, projection imaging module, refractive lens assembly, aspheric mirror, the exposure module has a plurality of exposure quantities, the HDR image generation module generates an HDRimage according to images under different exposure amounts, the projection imaging module comprises a refractive lens group, the aspheric mirror projects the generated HDR image onto the projection screen, The projection screen comprises a backlight and a display screen mounted on the backlight, the backlight comprises an upper substrate, a lower substrate and a backlight layer coated on the upper substrate, and the display screen comprises a front substrate and a filter layer positioned between the front substrate and the upper substrate. The high dynamic range short focal length projectionsystem of the invention improves the definition of the image through the HDR technology, and at the same time, the trapped light projection screen is adopted, which is favorable for ensuring the clearimage.

Description

technical field [0001] The invention relates to the technical field of projection imaging, in particular to a high dynamic range short focal length projection system. Background technique [0002] A projector is an optical instrument that uses optical elements to magnify the outline of a workpiece and project it onto a projection screen. However, the existing projectors and the matching projection screens need to perform imaging under low light conditions when projecting images. This is because when the light is strong, the projection screen is prone to reflect light, which affects the clarity of the image. In addition, strong light tends to cause overexposure of the image projected on the projection screen, which further affects the clarity of the image. Therefore, in view of the above problems, it is necessary to propose a further solution. Contents of the invention [0003] The purpose of the present invention is to provide a high dynamic range short focal length pro...

Claims

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Application Information

Patent Timeline
18 Dec 2018
Publication
CN109031878A
IPC
G03B21/60
CPC
G03B21/60
Inventors
冷杰; 伏长虹