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Surface quality detection device and method for ellipsoidal glass shell

A technology of surface quality and detection device, which can be used in measurement devices, optical testing of flaws/defects, material analysis by optical means, etc.

Inactive Publication Date: 2018-04-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the surface quality of the ellipsoidal glass shell of the 20-inch photomultiplier tube cannot be automatically detected, and proposes a surface quality detection device and detection method for the ellipsoidal glass shell

Method used

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  • Surface quality detection device and method for ellipsoidal glass shell
  • Surface quality detection device and method for ellipsoidal glass shell
  • Surface quality detection device and method for ellipsoidal glass shell

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specific Embodiment approach 1

[0028] Specific implementation mode one: combine figure 1 Describe this embodiment, an ellipsoidal glass bulb surface quality detection device described in this embodiment, including an industrial camera 1, a telecentric lens 2, a light source 3, a support frame 10, a guide rail 5, a turntable 6, and a stepping motor No. 1 Controller 8 and No. 2 stepper motor controller 11;

[0029] The lower end of the support frame 10 is fixed at the center of rotation of the turntable 6, the light source 3 is fixed on the top of the support frame 10, the measured ellipsoidal glass bulb 4 is fastened on the turntable 6, and the light source 3 is positioned on the measured ellipsoidal glass bulb 4 The height of the support frame 10 is adjustable so as to ensure that the light source 3 is located at the center of the measured ellipsoidal glass bulb 4; at the same time, the size of the turntable 6 ensures that the measured ellipsoidal glass bulb 4 can be placed stably and coaxially rotated;

...

specific Embodiment approach 2

[0038] Embodiment 2: This embodiment further limits the surface quality detection device of an ellipsoidal glass bulb described in Embodiment 1. In this embodiment, the light source 3 is a white light source that emits uniform light.

[0039] In this embodiment, the white light source with uniform light emission can make the brightness of the image taken by the industrial camera 1 consistent, and it is more convenient and accurate when splicing images, and avoids errors caused by the uneven light emission of the light source 3 .

specific Embodiment approach 3

[0040] Specific embodiment three: this embodiment is to further limit the surface quality detection device of a kind of ellipsoidal glass bulb described in specific embodiment one, in this embodiment, the length of the major axis of the ellipse where the guide rail 5 is located is the length of the measured ellipse The length of the semimajor axis of the spherical glass bulb 4 plus the working distance of the industrial camera 1 and the length of the industrial camera 1, the length of the semiminor axis of the ellipse where the guide rail 5 is located is the length of the semiminor axis of the measured ellipsoidal glass bulb 4 plus the length of the industrial camera 1. The working distance of the camera 1 and the length of the industrial camera 1.

[0041]In this embodiment, the detection result is more accurate by ensuring the working distance of the industrial camera 1 .

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Abstract

The invention provides a surface quality detection device and method for an ellipsoidal glass shell, relates to the surface quality detection technology for glass shells of photomultipliers and aims to solve the problem that the surface quality of the ellipsoidal glass shells of 20-inch photomultipliers cannot be detected automatically. A support frame is fixed on a rotary table, a light source isfixed on the support frame, an oval with an opening in the lower end is defined by a guide rail, and an industrial camera slides along the inner wall of the guide rail; a telecentric lens is arrangedon the industrial camera; light emitted by the light source passes through the tested ellipsoidal glass shell and the telecentric lens sequentially and is received by the industrial camera; rotationof the rotary table is controlled by a stepper motor controller I, and the position of the industrial camera on the guide rail is controlled by a stepper motor controller II; both the stepper motor controller I and the stepper motor controller II are connected with a PC; the industrial camera is connected with the PC. The surface quality detection device and method have the beneficial effects thatdetection is comprehensive, imaging is clear, the structure is simple, and the operation is simple and convenient.

Description

technical field [0001] The invention relates to a surface quality detection technology of a glass shell of a photomultiplier tube. Background technique [0002] Photomultiplier tubes are vacuum electronic devices that convert weak light signals into electrical signals. Photomultiplier tubes are used in optical measuring instruments and spectral analysis instruments. The photomultiplier tube can measure the extremely weak radiation power with a wavelength of 200-1200 nanometers in low-level photometry and spectroscopy. The emergence of scintillation counters has expanded the application range of photomultiplier tubes; the development of laser detection instruments is closely related to the use of photomultiplier tubes as effective receivers; the launch and image transmission of TV movies are also inseparable from photomultiplier tubes; photomultiplier tubes Widely used in metallurgy, electronics, machinery, chemical industry, geology, medical treatment, nuclear industry, ast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/89
CPCG01N21/8901G01N2021/8908
Inventor 陆敏王治乐刘文涛王华林刘敬琪林菲赵峰
Owner HARBIN INST OF TECH
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