Atmospheric coherence length meter automatic focusing device and method

A technology of atmospheric coherence length and automatic focusing, which is applied in the field of optics and can solve the problems that equipment cannot achieve automatic focusing

Inactive Publication Date: 2018-10-19
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The focal length adjustment devices in the atmospheric coherence length meter in the prior art are all realized manually, so that the equipment cannot realize automatic focusing

Method used

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  • Atmospheric coherence length meter automatic focusing device and method
  • Atmospheric coherence length meter automatic focusing device and method
  • Atmospheric coherence length meter automatic focusing device and method

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041] The object of the present invention is to provide an automatic focusing device and an automatic focusing method of an atmospheric coherence length meter.

[0042] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] The atmospheric coherence length meter incl...

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Abstract

The invention discloses an automatic focusing device for automatic focusing of an atmosphere coherence length instrument. A telescope and a camera are arranged on the atmosphere coherence length instrument correspondingly, light images on a camera target face in the camera through the telescope, and the automatic focusing device is connected with the camera. The automatic focusing device comprises a micro sliding rail, a slider seat and a controller, the slider seat is fixedly connected with the camera and arranged on the micro sliding rail and can drive the camera to move up and down along the micro sliding rail, and the controller is connected with the camera and used for acquiring mass center positions of two light spots of an image on the camera target face and adjusting a distance between the camera and the telescope according to the mass center positions of the light spots. The distance between the camera and the telescope is adjusted by controlling through the controller, and automatic focusing is realized.

Description

technical field [0001] The invention relates to the field of optics, in particular to an automatic focusing device and method for an atmospheric coherence length meter. Background technique [0002] When light is transmitted in a turbulent atmosphere, due to the fluctuation of the refractive index in the atmosphere, the light wavefront is distorted, causing turbulent effects such as beam drift, spot expansion, and light intensity fluctuations. When describing turbulent effects, the widely used parameters are atmospheric coherence length, atmospheric coherence The length describes the comprehensive turbulence intensity on the transmission path, and is an important parameter for the study of laser atmospheric transmission and adaptive optics. [0003] The measurement method of the atmospheric coherence length meter: the beam is received by the telescope and focused on the target surface of the camera. After passing through the camera data acquisition and processing system, two...

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G02B7/09G03B13/36G01J9/00
CPCG01J9/00G02B7/09G03B13/36
Inventor谭逢富张巳龙何枫
OwnerHEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI