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Multi-face prism, lidar including multi-face prism, and method of manufacturing multi-face prism

A multi-faceted prism and prism technology, applied in prisms, manufacturing tools, glass manufacturing equipment, etc., can solve the problems of prism processing indicators that cannot meet theoretical design indicators, low processing accuracy, large processing errors, etc., to ensure accuracy and simple structure , the effect of reducing the occupied volume

Pending Publication Date: 2021-10-26
NINGBO SUNNY AUTOMOTIVE OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of polygonal prism has many disadvantages, such as low processing efficiency, high cost, complex structure, low pass rate and low processing precision caused by numerous processes.
Taking the existing prism as an example, its surface index can only achieve That is, in an area with a diameter of 25mm, the surface shape can only guarantee 15um
In addition, the late wear and tear of the cold machining tools that operate on the prism will cause the processing indicators of each surface of the produced prism to fail to meet the theoretical design indicators, and there will be large processing errors

Method used

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  • Multi-face prism, lidar including multi-face prism, and method of manufacturing multi-face prism
  • Multi-face prism, lidar including multi-face prism, and method of manufacturing multi-face prism
  • Multi-face prism, lidar including multi-face prism, and method of manufacturing multi-face prism

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Embodiment Construction

[0070] For a better understanding of the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are descriptions of exemplary embodiments of the application only, and are not intended to limit the scope of the application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0071] It will be understood that, in the present application, when an element or layer is described as being "on," "connected to" or "coupled to" another element or layer, it can be directly on the other element or layer. or layer, directly connected to or coupled to another element or layer, or intervening elements or layers may be present. When an element is referred to as being "directly on," "directly connected to," or "directly coupled to" another element or layer, there are no intervening elements or layers present. Throughout...

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Abstract

The invention discloses a multi-face prism which comprises a prism body made of glass, the prism body comprises three or more reflecting faces, a first end face formed by intersecting with the three or more reflecting faces, and a second end face opposite to the first end face. The included angle between the reflecting surface and the first end surface is 90 degrees or less than 90 degrees. The multi-face prism provided by the invention can be finished through one-time processing by a mould pressing integral forming process, and does not need to be processed for more than two times.

Description

technical field [0001] The application relates to a polygonal prism, especially a glass polygonal prism with a high-precision inner hole or a rotation axis. Background technique [0002] With the rapid development of optical technology and the wide application of computer high-tech, digital stereo photogrammetry has gradually developed and matured. For example, in the field of automotive active safety, lidar is often used to effectively detect the position of the target, and the most widely used is the rotating lidar. Rotary lidar has the advantage of low power. Moreover, since the angular velocity of the polygonal prism in the rotating lidar remains constant during rotation, the density of the received laser points is uniform, so the rotating lidar also has the advantages of stable, accurate and detailed information. These advantages have led to an increasing demand for rotating LiDAR. [0003] After the polygonal prisms currently on the market are processed, they usuall...

Claims

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Application Information

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IPC IPC(8): G02B5/04G02B7/18G01S7/481C03B23/03
CPCG02B5/04G02B7/1805G01S7/481C03B23/03
Inventor 李波马立军沈伊君左长勇
Owner NINGBO SUNNY AUTOMOTIVE OPTECH
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