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Optical path coupling alignment device and method based on sub-aperture division

A technology of alignment device and sub-aperture, applied in optics, optical components, instruments, etc., can solve the problems of large occupied space, complex control and complex structure, etc.

Active Publication Date: 2014-05-07
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this method is that it uses two sensors, takes up a lot of space, has a complex structure, high cost, and complicated control

Method used

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  • Optical path coupling alignment device and method based on sub-aperture division
  • Optical path coupling alignment device and method based on sub-aperture division
  • Optical path coupling alignment device and method based on sub-aperture division

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Embodiment Construction

[0039] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] Such as figure 1 As shown, the purpose of the optical path coupling alignment device based on sub-aperture division in the embodiment of the present invention is to align the light source on the first platform 8 with the sensor 3 based on sub-aperture division on the second platform 9 . The alignment device includes: a first tilting mirror 1, a second tilting mirror 2, a sensor 3 based on sub-aperture division, a drive control unit 4, a beam splitter 5, a first platform 8, a second platform 9, and a first optical system 6 and the second optical system 7; the first tilting mirror 1 and the first optical system 6 are located on the first platform 8; the second tilting mirror 2, a sensor 3 based on sub-aperture division, the drive control unit 4, the beam splitter 5 and the first The second optical system 7 is located on the second platf...

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Abstract

Disclosed are optical path coupling alignment device and method based on sub-aperture division. The optical path coupling alignment device based on sub-aperture division comprises a sub-aperture division based sensor, a drive control unit and two fast-tilting mirrors. As the sub-aperture division based sensor can provide pupil alignment information and optical axis alignment information at the same time, the sub-aperture division based sensor is used as an optical path detection mechanism to obtain errors in pupil alignment and optical axis alignment of an optical path. By corresponding closed-loop control algorithms, the pair of fast high-precision tilting mirrors is controlled to correct the optical axis and the pupil of an optical system in real time. Therefore, fast high-precision optical axis and pupil alignment between two optical tables is finally achieved.

Description

technical field [0001] The invention relates to an optical path coupling alignment method between two or more optical platforms, in particular to a novel optical path coupling alignment device and alignment method based on sub-aperture division. Background technique [0002] In many application fields of optical technology, a technical problem of optical coupling alignment is often encountered. For example, in a large-scale laser emission system, for the convenience of manufacturing, assembly and debugging, the laser system, beam transmission transformation system, beam emission and receiving system, etc. are placed on two or more independent optical platforms. Even if a ruler, plumb bob, level, etc. are used for prior calibration, due to changes in ambient temperature and gravity, there will inevitably be a relative position error between the two optical platforms after a certain period of time. Since the wavelength of light is on the order of microns, the error requiremen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/30
Inventor 李新阳叶红卫杨榕
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI