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Large-view-field high-resolution all-solid-state optical scanning system

An optical scanning, high-resolution technology, applied in the field of optical scanning, to achieve the effect of compact overall structure, multi-beam synchronous scanning, and high reliability

Active Publication Date: 2022-07-12
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a large-field-of-view high-resolution all-solid-state optical scanning system for the deficiencies of the above-mentioned existing beam scanning methods, which realize large-angle low-resolution scanning through electronically controlled optical switches, and the grating coupler and Wavelength tuning realizes high-resolution scanning of small field of view, thereby realizing scanning of high-resolution large field of view. At the same time, the system is compact, light in weight, and highly integrated

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[0037] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are set forth in order to provide a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0038] In order to illustrate a large field of view high-resolution all-solid-state optical scanning system according to the present invention, the following combination figure 1 The schematic diagram of the overall structure of the system and figure 2 , image 3 Be explained.

[0039] by figure 2 For example, the implementation of the frequency-modulated light sour...

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Abstract

The invention discloses a large-view-field high-resolution all-solid-state optical scanning system which is composed of a frequency modulation light source, an integrated chip and a lens group, the frequency modulation light source is an adjustable laser light source with equal frequency intervals, and the integrated chip is composed of a cascade optical switch and an array grating coupler. The lens group is composed of a first-layer array focusing lens, a second-layer array beam expanding lens group and a third-layer focusing lens. Large-angle low-resolution scanning is achieved through the electric control optical switch, and small-view-field high-resolution scanning is achieved through the grating coupler and wavelength tuning. High-speed, large-angle and high-resolution scanning of laser beams is achieved, the scanning speed reaches megahertz, mechanical rotating parts are omitted, and the device has the advantages of being compact in overall structure, light in weight, high in reliability and the like and can be used for laser radar imaging.

Description

technical field [0001] The invention relates to the technical field of optical scanning, in particular to a large-field high-resolution all-solid-state optical scanning system. Background technique [0002] Optical scanning refers to the technology of precise control and positioning of the beam direction, which is widely used in lidar, laser and free space optical communication. At present, optical scanning technologies mainly include mechanical scanning based on rotating flat mirrors or triangular prisms, MEMS scanning based on electro-optic scanning, acousto-optic scanning or liquid crystal, and all-solid-state scanning. Traditional mechanical scanning is limited by its size and weight, and has shortcomings such as poor positioning accuracy and slow scanning speed; MEMS optical scanning has problems such as complex control system, and the impact of vibration will reduce accuracy and reliability, cause drift, and affect life. All-solid-state optical scanning abandons mecha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/10
CPCG02B26/10G02B26/106Y02A90/10
Inventor 崔浩李俊威魏凯刘盛捷李喜棋杨金生
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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