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A resettable small laser interferometer

A laser interferometer, small-scale technology, applied in the field of laser interferometer, to meet the test accuracy requirements, high positioning accuracy, small size effect

Inactive Publication Date: 2018-09-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing interferometers are difficult to meet the above requirements

Method used

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  • A resettable small laser interferometer
  • A resettable small laser interferometer
  • A resettable small laser interferometer

Examples

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation is provided, but the protection scope of the present invention is not limited to the following embodiments.

[0025] Such as Figure 1 to Figure 5 As shown, a resettable small laser interferometer involved in this embodiment includes: an interferometer base 1, an optical fiber collimator 2, a lens barrel clip 3, a collimator positioning tube 4, and a collimator angle pointer 5 , a mounting panel 6, a camera slide 7, a camera connection plate 8, an industrial CCD camera 9 and a metal frame 10 of type II structure;

[0026] The front end of the interferometer base 1 is a U-shaped metal frame, which is connected to the interferometer mounting panel 6 through six positioning holes 11 on the upper surface of the interferometer base 1, ...

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Abstract

The invention relates to a resettable miniature laser interferometer. An input terminal of a fiber collimator is connected with a fiber; and an output terminal of the fiber collimator outputs a collimated laser beam. One end of a collimator positioning tube is connected with a mounting panel and a collimator angle pointer; and the other end of the collimator positioning tube is connected with a lens cone clamp plate. The collimator angle pointer is fixed on the collimator positioning tube and is close to the mounting panel; and the pointing direction of the collimator angle pointer is consistent with the axis direction of the fiber collimator. The mounting panel is U-shaped metal plate; six steel balls are distributed under the mounting panel, wherein the positions of the six steel balls are consistent with six positioning holes of an interferometer pedestal. A camera sliding table is formed by a chute, a sliding block, and an adjusting handle; the chute is fixed in the mounting panel; the sliding block and a camera connecting plate are connected; sliding of the sliding table along the chute can be controlled by the adjusting handle; and the camera connecting plate is used for connecting the camera sliding table and an industrial CCD camera.

Description

technical field [0001] The invention relates to a resettable small laser interferometer, which belongs to the technical field of laser interferometers. Background technique [0002] Laser speckle interferometry, also known as electronic speckle interferometry, is an optical-based, full-field, non-contact non-destructive measurement and detection technology. When a beam of coherent light is irradiated on a flat and rough reflective surface, the diffusely reflected light waves are superimposed on each other, forming a speckle-like distribution of light and dark, that is, the speckle field. The speckle field records the geometric information of the surface of the object. Using appropriate optical path and processing technology, the surface displacement, strain, roughness, three-dimensional shape, etc. can be measured and detected. [0003] Residual stress is a kind of material internal stress existing in welded joints, which is characterized by high peak levels and large gradi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B9/02
CPCG01B9/02015
Inventor 刘雪松闫忠杰潘海博
Owner HARBIN INST OF TECH
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