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Method for detecting diopter of rigid endoscope based on liquid lens

A liquid lens and detection method technology, applied in the direction of testing optical performance, etc., can solve the problems of poor repeatability and low accuracy, and achieve the effects of reduced intervention, convenient operation and accurate detection results.

Active Publication Date: 2016-11-23
BEIJING WEISIDUN ASIA PACIFIC OPTO ELECTRIC INSTR CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

The measurement process is mainly through manual detection, and the accuracy of measurement is low and the repeatability is poor due to the inconsistency of vision between people.

Method used

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  • Method for detecting diopter of rigid endoscope based on liquid lens
  • Method for detecting diopter of rigid endoscope based on liquid lens

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Embodiment Construction

[0027] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0028] A method for detecting the diopter of a rigid endoscope based on a liquid lens, such as figure 2 shown, including the following steps:

[0029] Step 1. Build a detection system: such as figure 1 As shown, wherein the detection system includes a first linear guide 1, a CCD camera 2, a lens 3, a liquid zoom lens 4, a rotating platform 7, a liquid crystal screen 8 and a second linear guide 9;

[0030] Described CCD camera 2, lens 3 and rigid endoscope 6 are installed on the first linear guide rail 1 respectively by bracket; Lens 3 is positioned between CCD camera 2 and rigid endoscope 6, and the exit of rigid endoscope 6 The pupil end faces the direction of the lens 3; the liquid zoom lens 4 is fixed on the exit pupil end of the rigid endoscope; the rotating platform 7 is installed on the first linear guide rail 1, and the second linear guide rail 9...

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Abstract

The invention discloses a method for detecting the diopter of a rigid endoscope based on a liquid lens. A mechanical movement device in a detection device is an electric control device, human intervention is reduced, the measurement precision is improved, and the automation degree is high. CCD imaging and computer display are adopted, the human eyes are replaced, direct observation is carried out through the endoscope, observation fatigue is avoided, and the operation is convenient. The focal length of a liquid zoom lens is changed through changing voltage of a liquid zoom lens so as to replace a focusing lens group, the diopter of the rigid endoscope is enabled to be only related with the voltage of the liquid zoom lens, the operation is simple, the precision is high, and measurement errors are reduced. Influences of stray light are eliminated through carrying a test in a darkroom or adopting a light barrier, so that the detection result is enabled to be more accurate.

Description

technical field [0001] The invention relates to the technical field of rigid endoscope detection, in particular to a method for detecting the diopter of a rigid endoscope based on a liquid lens. The detection is conducive to the adjustment of rigid endoscopes. Background technique [0002] With the increasing popularity of minimally invasive surgery under the endoscope, people's understanding of the safety and effectiveness of the clinical application of endoscope products has also gradually developed and deepened. The performance indicators of rigid endoscopes, especially the optical performance, directly or indirectly affect patients. safety. Different optical systems may have different degrees of convergence and divergence of light, that is, different degrees of refraction. The unit that expresses the magnitude of this refractive phenomenon is the diopter. Diopter, also known as refraction, is a unit that expresses the focal power of an optical system, and is specified...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/02
Inventor 刘小华王亚坤程德文翟小皓董立泉刘明何川刘天宸李庸辉周鹏
Owner BEIJING WEISIDUN ASIA PACIFIC OPTO ELECTRIC INSTR CO LTD
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