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High precision light beam coaxiality adjusting method

An adjustment method and coaxiality technology, which is applied in optics, optical components, instruments, etc., can solve the problems of low precision, difficulty in meeting high-precision applications, and the inability to use large-aperture antenna optical systems, etc., to meet the requirements of high-precision adjustment Effect

Inactive Publication Date: 2006-06-21
HARBIN INST OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a high-precision beam coaxiality adjustment method to overcome the defects of low precision of the existing beam coaxiality adjustment method, difficulty in meeting the needs of high-precision applications, and inability to be used in large-aperture antenna optical systems

Method used

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  • High precision light beam coaxiality adjusting method
  • High precision light beam coaxiality adjusting method

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specific Embodiment approach 1

[0006] Specific implementation mode one: the following combination Figure 1 to Figure 3 This embodiment will be specifically described. This embodiment is realized through the following steps: 1. First, the laser beam is emitted by the transmitting optical path 1 of the optical system under test. The focal point of the focal collimator 4 is focused into a point image, and the point image is received at the focal plane of the telephoto collimator 4 by using a translucent screen 5 (ordinary frosted glass), and the point image is received with a microlens 6-1 The CCD detector 6 measures the spot position of the point image, and the image and position data of the point image are received, recorded and calculated by the image acquisition card 11 and computer 7; The front translucent screen 5 is replaced with a light-shielding plate 8 with a small hole 8-1, and under the monitoring of the CCD detector 6, the center of the small hole 8-1 is adjusted to the point image spot position...

specific Embodiment approach 2

[0008] Specific embodiment two: the difference between this embodiment and embodiment one is: in step one, computer 7 reads the point-like light spot gray value incident to CCD detector 6 by the threshold judgment method, and by formula (1) , (2) Calculate the center coordinates of the spot.

[0009] X c = Σ i = 1 n ( g i - B ) u ( g i - B ) x i Σ n ...

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Abstract

The invention discloses a coaxial adjustment method of high-precision light beam with launching optical circuit and receiving optical circuit, which comprises the following steps: launching the laser beam through the launching optical circuit 1 of detected optical system; focusing the light into image point at the focal point of long focal parallel optical pipe through beam splitter 2 and optical antenna 3; detecting the flare position of image point through CCD detector; receiving, recording and calculating the image point and location data through image gathering card and computer; closing 1; adjusting the eight holes' center of dark slide 8 to the flare position; setting the illuminating light source 9 at 4 focal point; launching the light beam to the detected optical system and receiving optical circuit 10 through 9 hole, 4 and 2.

Description

technical field [0001] The invention relates to a method for adjusting the coaxiality of a transmitting light path and a receiving light path of an optical system that transmits and receives the same antenna. Background technique [0002] When developing an optical system that transmits and receives the same antenna, the coaxiality of the transmitting optical path and the receiving optical path is one of the important parameters that are strictly required. The existing coaxiality adjustment method is to output the light field from the transmitting light path through the antenna, and use a corner prism to reflect it back to the receiving antenna along the original path and enter the receiving light path. Taking the incident light as the reference axis, the receiving light path is adjusted to Ensure the coaxiality of the transmitting and receiving optical paths. Due to the limitation of the processing accuracy of the corner prism, the emitted light field does not return stric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/00
Inventor 马晶谭立英韩琦琦于思源
Owner HARBIN INST OF TECH
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