Non-uniform ring prism for controlling light deflection and its lidar application structure

By designing a non-uniform annular prism, three-dimensional optical scanning of lidar was achieved, solving the problems of increased equipment cost and size in existing technologies and improving scanning efficiency and accuracy.

CN116360023BActive Publication Date: 2026-06-12LANHAI PHOTOELECTRICITY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LANHAI PHOTOELECTRICITY TECH CO LTD
Filing Date
2023-05-12
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing lidar equipment increases cost and size when the number of scanning beams is increased to increase the detection field of view and improve detection density, and the mechanical structure becomes more complex, making it difficult to balance the field of view and refresh rate.

⚗Method used

A non-uniform annular prism is used to control the deflection of light. Through the non-uniform design of the annular prism body, three-dimensional scanning of light in the horizontal and vertical directions is achieved. Multi-angle deflection is generated by the rotation of the annular prism, and the vertical deflection angle is obtained by combining it with an angle encoder.

🎯Benefits of technology

It achieves 360° horizontal scanning light deflection, simplifies the internal structure, reduces the size of the device, and improves scanning efficiency and accuracy.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a non-uniform ring prism for controlling light deflection and a laser radar application structure thereof, relates to the field of three-dimensional optical scanning technology of laser radars, and discloses the non-uniform ring prism, which comprises a ring prism body, the ring prism body comprises an inner wall surface, an outer wall surface, an upper ring end surface and a lower ring end surface, edges of the inner wall surface and the outer wall surface terminate at edges of the upper ring end surface and the lower ring end surface, the upper ring end surface and the lower ring end surface are inconsistent in width, the upper ring end surface and the lower ring end surface are inconsistent in size, and the spacing between the inner wall surface and the outer wall surface is inconsistent in the circumferential and / or axial direction. The laser radar application structure is connected with the laser radar, and a radar transmitting position and a radar receiving position are arranged on the inner wall surface of the ring prism body. The application realizes three-dimensional optical scanning in the horizontal direction and the vertical direction, simplifies the internal structure, and is smaller in size than other mechanisms for achieving the same function.
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