Surveymeter for parallelism of optical axis of visible and infrared light wave

An infrared light and axis-parallel technology, applied in the field of optical detectors, can solve problems such as low precision and high risk, and achieve the effect of improving measurement precision and reducing experimental risk
CN101446485AInactive Publication Date: 2009-06-03INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
Publication Date
2009-06-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a surveymeter for parallelism of optical axis of visible and infrared light wave, comprising an infrared light part and a visible light part. Firstly, aiming is operated by employing visible light, the visible light emitted by a visible light source lightens up a cross wire by a cross-linegraticule, an emergent visible cross wire image is formed on a visible light CCD, after being reflexed by an infrared beam splitter, a secondary mirror, a primary mirror and a standard flat mirror, the emergent visible light returns to the visible light CCD by the optical devices and forms a return cross wire image, and a system is adjusted to superpose the emergent visible cross wire image and the return cross wire image, thereby completing instrument aiming. Then infrared light is employed for detecting, iraser emitted by an infrared laser passes through a series of optical elements of the infrared light part, and an emergent infrared spot and a return infrared spot on an infrared CCD are extracted by measurement software. Error value of the parallelism can be obtained by formula computing. The surveymeter of the invention adopts the visible light to aim and the infrared light to detect the parallelism error, thereby reducing experiment risk while improving measurement precision.
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Description

technical field

[0001] The invention relates to an optical detector, in particular to a detector for the parallelism of optical axes of visible and infrared light waves. Background technique

[0002] Due to the needs of optical detection, some optical instruments need to work in the visible and infrared composite band; one of the main technical indicators affecting the performance of these instruments is the parallelism of the optical axes of visible and infrared light waves. The parallelism of the optical axis is strictly controlled. At present, the control method for the parallelism index of the optical axes of visible and infrared light waves is to use a piece of white paper to mark A at the focal point of visible light, use infrared light to burn a black spot on the white paper and mark it as B, and measure A and B The distance is then converted into the parallelism of the optical axes of visible and infrared light waves. This detection method has low precision and high...

Claims

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