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Method for improving focal distance detection precision of long focal distance collimator

A collimator and detection accuracy technology, applied in the field of optical detection, can solve problems such as low measurement accuracy and reduced aiming accuracy, and achieve the effects of improving detection accuracy, improving aiming accuracy, and improving aiming accuracy

Inactive Publication Date: 2010-10-06
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0007] The main problem that this method exists is: because the focal length of long focal length collimator 2 is far greater than the focal length of theodolite 3, when aiming at with theodolite 3, the engraved line image of reticle 1 is very thin, has reduced aiming precision, in this method Angular standard deviation σ of theodolite 3 ω =2″; the measurement standard deviation σ of the division interval AB y =0.001mm; when 2ω=1°, the relative measurement error σ of the focal length of the long focal length collimator f′ / f' is one thousandth, and the measurement accuracy is low, which cannot meet the needs of some practical work

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  • Method for improving focal distance detection precision of long focal distance collimator
  • Method for improving focal distance detection precision of long focal distance collimator
  • Method for improving focal distance detection precision of long focal distance collimator

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Embodiment Construction

[0019] The present invention is implemented according to the steps of the technical solution for solving the technical problems. In the established test device system, the reticle 7 adopts the XGJ type 500 optical distance seat matching reticle produced by Xiaogan Huazhong Optoelectronics Instrument Co., Ltd., and the autocollimation theodolite 5 selects the TM5100A autocollimation theodolite of Swiss Leica Company. Microscope 8 is an XGJ-4 / 03 microscope produced by Xiaogan Huazhong Optoelectronics Instrument Co., Ltd. The magnification of the objective lens is 4 times, and the magnification of the eyepiece is 10 times. The camera 9 uses the M1614-MP lens of the Japanese Computar Company; the display 10 uses the Korean Samsung Company SMC-152F 15-inch flat-panel display; the test should be carried out in an optical testing laboratory with a temperature of 20°C ± 3°C and a humidity of 40% to 70%.

[0020] After the above test conditions are satisfied, adjust the position of the...

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Abstract

The invention discloses a method for improving focal distance detection precision of a long focal distance collimator, which belongs to the technical field of optical detection and relates to a method for detecting the focal distance of the collimator. In order to solve the technical problem, the invention provides the method for improving the focal distance detection precision of the long focal distance collimator. To solve the technical problem, the invention adopts the technical scheme that the method comprises the following steps of: firstly, establishing a set of focal distance test device system of the long focal distance collimator; secondly, adjusting the position of a reticle; thirdly, performing test; and fourthly, processing data. The method changes the aiming mode, improves the aiming precision, can improve the measurement precision of the long focal distance collimator by 3 times, and also can be applied to focal distance detection of other long focal distance optical systems.

Description

technical field [0001] The invention belongs to the technical field of optical detection, and relates to a method for improving the detection accuracy of the focal length of a collimator with a long focal length. Background technique [0002] The focal length is an important parameter to determine the relationship between the object and the image of the optical system. It can determine the position, size, upside down, virtual reality and other characteristics of the object imaged by the optical system. The focal length value of the optical system should be measured before use. The commonly used methods are the magnification method, the additional lens method, the additional receiver method and the precision angle measurement method. The long focal length collimator is a kind of optical system, and the common method for detecting the focal length of the long focal length collimator is the precision angle measurement method. The closest existing technology to the present inve...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/02
Inventor 吴国栋
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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