Digital microscopic optical imaging device with long working distance

A working distance, digital microscopy technology, applied in the field of optical imaging, which can solve the problems of low resolution and short working distance of microscopes

Active Publication Date: 2020-12-18
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a long working distance digital micro-optical imaging device to solve the problems of short microscope working distance and low resolution in industrial dynamic measurement

Method used

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  • Digital microscopic optical imaging device with long working distance
  • Digital microscopic optical imaging device with long working distance
  • Digital microscopic optical imaging device with long working distance

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Experimental program
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Embodiment

[0034] Optical structure design part:

[0035] Please refer to figure 1 , the optical path diagram of the microscope lens assembly of the optical system, including a biconcave lens, an achromatic doublet convex lens 1, and a doublet convex lens 2 arranged on the main optical axis from right to left; wherein,

[0036] The diameter of the double-concave lens is 25.4 mm, made of BK7 material, and the center thickness is 3 ± 0.1 mm, and the edge thickness is 5 ± 0.1 mm;

[0037] The first lens and the second lens are achromatic lenses formed by bonding a positive lens and a negative lens;

[0038] The first diameter of the lens is 25.4mm, the biconvex is made of N-BK7 material, the meniscus is made of H-ZF2 material, the thickness of the center of the lens is 8.4±0.1mm, and the thickness of the edge is 6.85±0.1mm. The object plane is the positive meniscus of the negative lens, and the image plane is the positive meniscus of the positive lens.

[0039] The second diameter of the...

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PUM

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Abstract

The invention discloses a digital microscopic optical imaging device with a long working distance, which consists of a microscope imaging light path and an industrial camera and belongs to the technical field of detection equipment. According to the invention, by simulating an optical imaging effect by utilizing optical design software ZEMAX, it provides a digital microscopic optical imaging device with a working distance of 400 mm, a view field range diameter of 4 mm, a working waveband of visible light, and a microscope optical system with a resolution of 10 [mu]m. The optical system has thecharacteristics of long working distance, high-resolution imaging and the like, and can be applied to non-contact detection in the industrial field.

Description

technical field [0001] The invention relates to optical imaging technology, in particular to a long working distance digital microscopic optical imaging device. Background technique [0002] Microscopes are widely used. It can not only be used in the field of biology, but also play a pivotal role in other scientific fields such as medicine, astronomy, and materials science. It is precisely because the microscope plays such an important role that every innovation in the field of scientific research is inseparable from it. Therefore, the microscope has become an important symbol of scientific development and has been widely used in the detection field and industrial production. [0003] However, when the workpiece is in a relatively harsh environment, the microscope needs to perform high-resolution imaging on the surface of the measured workpiece at a long working distance to observe the changes of the sample to be tested, such as observing the thermal expansion of the metal. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B21/36G02B21/02G02B7/02
CPCG02B21/361G02B21/02G02B7/025
Inventor 刘梦涵蔡华俊宋旸施雨清
Owner NANJING UNIV OF SCI & TECH
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