Optical system and method of three-dimensional structure optical field for information detection

Abstract

The invention discloses an optical system and method of a three-dimensional structure optical field for information detection. A laser radiation light source, a diffraction optical element and a reflector system are arranged; a laser light source which is emitted by the laser radiation light source is reflected to the diffraction optical element by the reflector system; the reflector system comprises one or more plane mirrors; the diffraction optical element is used for taking an incidence laser light source as an illumination optical field and generating the structure optical field which is distributed on the required optical field. Several simple optical elements are only needed, the function of the complex optical system can be achieved, and the system thickness can be effectively reduced by adopting the reflector system. The optical technology has the advantages of being simple in optical structure, simple in mechanical adjustment system, extremely high in optical efficiency, miniaturized in size, low in cost, easy to operate and the like. According to the microstructure, the three-dimensional structure optical field for information detection is in an imperious demand state.

Description

technical field [0001] The present application relates to the field of optics, in particular to a structured light field optical system for three-dimensional information detection and a method thereof. Background technique [0002] With the rapid development of mobile devices such as modern mobile phones, tablet computers, and smart watches, and electronic consumer goods, the detection and application of 3D information on the external environment in various optoelectronic product fields is becoming more and more extensive. Information detection is used for IOT or AR / VR applications. The technical products in the above application fields all need to use structured light optical systems for three-dimensional detection with high precision, high resolution, small size and high integration. [0003] Based on the development of mask occlusion and micro-projection optical system technology, a structured light field optical system for three-dimensional information detection can be ...

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Problems solved by technology

[0003] Based on the development of mask occlusion and micro-projection optical system technology, a structured light field optical system for three-dimensional information detection can be realized. However, when this optical system is applied to mobile devices and consumer electronics, it is necessary to further reduce the use efficiency of light intensity and reduce the size of the system. Especially the size in the height direction, in order to improve the integration level, but after the integration level becomes higher, it will cause problems such as inconvenient mechanical adjustment, low optical efficiency, and higher manufacturing costs.

[0004] For the problems existing in related technologies, no effective solutions have been proposed yet

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