Back projection system and screen

A technology of projection screen and rear projection, which is applied in the field of projection, can solve the problems of affecting the user's viewing experience of projected images, affecting the user's viewing experience, and interfering with the viewing effect of projected images, so as to improve viewing experience, improve space utilization, and ensure beautiful effect

Active Publication Date: 2017-10-31
HUAWEI TECH CO LTD +1
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Problems solved by technology

[0004] Generally, the depth collection device can be set behind the projection screen, and the projection screen can be set to be light-transmissive, so that the infrared light projected by the depth collection device can pass through the projection screen and be projected onto the objects in front of the projection screen to realize depth. The collection of information, however, this also allows users located in front of the projection screen to see

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  • Back projection system and screen
  • Back projection system and screen
  • Back projection system and screen

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Embodiment Construction

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0041] In order to better understand the above-mentioned technical solution, the above-mentioned technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0042] See figure 1 , an embodiment of the present invention provides a rear projection system, the rear projecti...

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Abstract

The invention discloses a back projection system and a screen, and aims to realize depth information acquisition and enhancement of watch feeling of a user. The projection system comprises a projection screen of a scattering layer for representing an image, projection equipment and depth collection equipment, wherein the projection equipment used for projecting visible light to the projection screen to enable the projection screen to represent the image; and the depth collection equipment and the projection equipment are positioned on the same side of the projection screen and used for projecting invisible light to an object positioned on the other side of the projection screen through the projection screen to receive reflective light which is obtained by reflection on the invisible light by the object, so as to further obtain the depth information of the object, and the wavelength of the invisible light is longer than that of the visible light, wherein the scattering layer performs rayleigh scattering on the visible light and invisible light from one side of the projection screen; and the scattering intensity of the scattering layer on the visible light is greater than the scattering intensity of the scattering layer on the invisible light.

Description

technical field [0001] The invention relates to the technical field of projection, in particular to a rear projection system and a screen. Background technique [0002] According to the position of the projector in the projection system, the projection system can be divided into a front projection system and a rear projection system. Generally, the projection system with the projector set behind the projection screen is called a rear projection system, also known as a rear projection system. The projection device can be hidden behind the projection screen, and the user does not need to see the projection device during the projection process, which makes the user feel better. Therefore, the rear projection system has been widely used in many scenarios, such as remote video conferencing scene or home entertainment scene, etc. [0003] In the process of using the rear projection system, it may be necessary to collect the depth information of the objects in the scene in many ca...

Claims

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Application Information

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IPC IPC(8): G03B21/56H04N9/31
CPCG03B21/56H04N9/3141G03B21/26
Inventor 布莱恩·罗伯森李昆初大平姚峻
Owner HUAWEI TECH CO LTD
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