Annular compound lens miniaturized laser transceiver co-aperture device

A composite lens, laser transceiver technology, applied in the field of laser detection, can solve problems such as large volume and inability to meet use requirements, and achieve the effects of ensuring optical accuracy, simple structure, and low cost

Inactive Publication Date: 2018-01-09
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a miniaturized laser transmitting and receiving common-aperture device with an annular composite lens to solve the problem that the existing laser transmitting and receiving common-aperture device has a large volume and cannot meet the use requirements in the case of limited volume.

Method used

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  • Annular compound lens miniaturized laser transceiver co-aperture device
  • Annular compound lens miniaturized laser transceiver co-aperture device
  • Annular compound lens miniaturized laser transceiver co-aperture device

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Embodiment 1

[0037] A kind of annular composite lens miniaturized laser transmitting and receiving common-aperture device in this embodiment, if applied to a small laser rangefinder, due to the volume limitation of the small laser rangefinder, the device is a cylinder with a diameter of Φ25mm and a height of 45mm.

[0038] The annular composite lens 2 adopts a split structure, which is made by processing the cylindrical central emitting lens 21A and the annular receiving lens ring 21B respectively, and fixing the central emitting lens 21A in the hole of the receiving lens ring 21B with black glue to prevent the emission of The stray light generated by the light beam inside the lens crosstalks to the receiving lens ring 21B, affecting the normal operation of the receiving system.

[0039] The diameter of the central transmitting lens 21A is designed to be 10mm, and the diameter of the receiving lens ring 21B is designed to be 18mm, so the effective light aperture areas of the transmitting an...

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Abstract

The invention discloses an annular compound lens miniaturized laser transceiver co-aperture device which comprises a fixed casing, an annular compound lens and a detection system module. The annular compound lens is fixed on the front end inside the fixed casing. The detection system module is fixed on the rear end in the fixed casing. The annular compound lens is provided with a circular boss atthe center of the convex surface of the existing convex lens, and the front end face of the boss is a circular convex surface. A convex lens surface composed of a receiving lens part and an emitting lens part is formed. The angle between the axial direction of the annular compound lens and the reflection plane of the reflection mirror of the detection system is 45 degrees. A laser emitting module,an emitting driving circuit, a control circuit and the casing body adopt an electromagnetic shielding structure. The laser transceiver co-aperture device provided by the invention is designed by using the annular compound lens, and has the advantages of miniaturization, modularization, reliability and low cost.

Description

technical field [0001] The invention belongs to the technical field of laser detection, in particular to a miniaturized laser transmitting and receiving common aperture device of an annular compound lens. Background technique [0002] Laser ranging technology can be used in civil and scientific research fields, and has extremely high ranging accuracy. It is one of the most widely used ranging methods at present. The traditional laser distance measuring device adopts the split-aperture method of sending and receiving, that is, the transmitting optical path and the receiving optical path are separated. For the transceiver lens, it can ensure the effective clear aperture and improve the efficiency of the transceiver, but it will cause the laser ranging equipment to be too bulky, which cannot meet the applications in certain volume-limited situations; and the separation of the optical axes will lead to The noise ratio is low, and the requirements for the ranging range are high,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/09G01S17/08G01S7/481
Inventor 张祥金姚宗辰戴炜冯涛张合何勇徐楠
Owner NANJING UNIV OF SCI & TECH
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