Optical system of laser cloud meter

Abstract

The invention relates to an optical system of a laser ceilometer, comprising a laser emitter, a laser receiver, an emitting optical system and a receiving optical system, wherein the emitting optical system and the receiving optical system share an optical lens, and a dichroic reflector is arranged between the optical lens and a focal plane positioned below the optical lens in an inclining way and is positioned on an optical axis of the optical lens; and the laser emitter and the laser receiver are respectively arranged on focal planes of the emitting optical system and the receiving optical system. The invention has the advantages of compact structure, small volume, light weight and low cost.

Description

technical field [0001] The invention relates to an optical system of a laser nephelograph. Background technique [0002] The laser cloud meter is an active photoelectric detection device that works at the laser wavelength. The device includes two optical components: a laser transmitter and a laser receiver. Each optical component is equipped with a set of optical systems, which are called the transmitting optical system and the receiving optical system. . The transmitting optical system is used to collimate the divergent beam radiated by the laser, and the receiving optical system is used to collect the laser echo signal scattered by the cloud. From the analysis of the principle of optical imaging, the "object" of the emitting optical system is the light-emitting surface of the laser radiation source, and the "image" formed by the "object" by the emitting optical system should be on the bottom of the cloud layer at infinity. Therefore, the "object" of the emitting optical s...

AI Technical Summary

Problems solved by technology

[0004] Existing laser nephelometry products mostly adopt the sending and receiving separate optical system with the optical axis of the emitting optical system and the optical axis of the receiving optical system separated and arranged in parallel. The layout of this scheme is as follows: figure 1 As shown, the transmitting optical system and the receiving optical system each have their own lenses, so two sets of lenses and two sets of structures are required, and the layout of this optical system has the disadvantages of scattered structure, heavy weight, and a large number of lens elements.

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