Diffusion film and structured light projection module correction device
A technology of structured light projection and correction device, which is applied in the field of optical materials, can solve problems such as rough edges of light, difficulty in uniform diffusion of patterns, overexposure, etc., achieve uniform refraction and reflection, and ensure light transmittance
Inactive Publication Date: 2020-05-19
深圳睿晟自动化技术有限公司
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Problems solved by technology
[0003] The purpose of this application is to provide a diffusion film, which aims to solve the technical problems that the diffusion film in the prior art tends to cause the pattern to be difficult to spread evenly, and it is easy to appear overexposure, too dark, rough edges of light, etc.
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[0025] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. Attached below by reference Figure 1~4 The described embodiments are exemplary and are intended to explain the application and not to be construed as limiting the application.
[0026] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than Nothing to indicate or imply that a referenced device or element must ha...
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Abstract
The invention belongs to the technical field of optical materials and particularly relates to a diffusion film and a structured light projection module correction device. The diffusion film is characterized in that a substrate layer, a first light diffusion layer and a second light diffusion layer are arranged, wherein the first light diffusion layer and the second light diffusion layer are located on two sides of the substrate layer, each of the first light diffusion layer and the second light diffusion layer comprises a plurality of layers, each layer is composed of spherical light diffusantparticles, volume difference of the light diffusant particles of each layer is less than 20%, thus, the single-layer light diffusant particles refract and reflect light uniformly, so the diffusion film added with the multiple layers of light diffusant particles with uniform volume sizes refracts and reflects light uniformly, the diffusion film develops patterns clearly, and the edge contour of the light is easy to distinguish.
Description
technical field [0001] The application belongs to the technical field of optical materials, and in particular relates to a diffusion film and a structured light projection module calibration device. Background technique [0002] 3D imaging technology is the core of the new generation of human-computer interaction technology. With the rigid demand of mobile terminal equipment for 3D imaging technology, depth cameras have been used in many occasions. For example, use the structured light projection module to generate patterned structured light and project it on the object, obtain the projected pattern on the object and obtain the depth information of the object based on it, so as to realize the 3D reconstruction of the object. The structured light projection module is the core equipment in the depth camera based on structured light technology. During the assembly process, it is necessary to detect the effect of the transmitted structured light pattern in real time. Usually, a ...
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Login to View More IPC IPC(8): G02B5/02G02B1/14
CPCG02B5/0242G02B1/14
Inventor 叶永青岑权罗菁冬
Owner 深圳睿晟自动化技术有限公司