Large-caliber long-focus collimator focal point real-time monitoring system

A technology of real-time monitoring system and collimator light pipe, which is used in optical instrument testing, optics, measuring devices, etc., can solve the problem of not mentioning environmental parameters. And perfect, can not fully simulate the complexity of the real environment and other problems, to achieve the effect of light weight, meet the accuracy requirements, save the complex process
CN102840964AInactive Publication Date: 2012-12-26CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Publication Date
2012-12-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a large-caliber long-focus collimator focal point real-time monitoring system. A laser device of the system emits laser beams, and the laser beams are divided into two bunches of lasers through a laser beam splitter. The two bunches of lasers pass through a slit after being reflected by a semi-reflecting and semi-transparent lens, and then are reflected to a main lens of the collimator through a reflecting lens. The two bunches lasers reflected by the main lens are reflected four times in turnover mode by two pentaprisms, and then are reflected back through the main lens. The two bunches lasers pass through the slit again after being reflected by the reflecting lens, and pass through two sets of dialyte lenses behind the semi-reflecting and semi-transparent lens and are converged on a charge coupled device (CCD). A processor calculates the distance between two faculaes according to image data received by the CCD, and then size and direction of defocusing amount can be obtained. An emitting light path and a receiving light path are in the same plane, and relative positions of elements are easy to guarantee when the large-caliber long-focus collimator focal point real-time monitoring system is mounted so as to reduce mounting and adjusting difficulty of the whole system.
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Description

technical field

[0001] The invention relates to a real-time monitoring system for the focal point of a collimated light tube with a large diameter and a long focal length. Background technique

[0002] As humans continue to explore the depths of space, space optics has been greatly developed. Various large-scale space telescopes and space cameras emerge in endlessly, and their apertures are also getting larger and larger, such as: the Hubble telescope with an aperture of 2.4 m, and a single aperture of 8.4 m. m LBT telescope, 6.5 m James space-based telescope, and 25 m GMT ground-based telescope. Therefore, the large-aperture detection system is more and more widely used in the scientific research work of calibration and detection, and its core equipment is a large-aperture collimator. However, as the aperture of the collimator becomes larger and the focal length becomes longer, the process of adjusting and calibrating the collimator becomes very cumbersome, and its image q...

Claims

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