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Laser speckle detector head and application thereof

A technology of laser speckle and detection head, applied in the field of laser, can solve the problems of small design of laser beam expansion system, limited illuminated area of ​​objects, and inability to detect, and achieves the effect of light weight, simple structure and compact arrangement

Inactive Publication Date: 2006-07-19
GUANGZHOU SCUT BESTRY TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The domestic utility model patent number is 92226915.7, and the name is "a portable electronic speckle interferometer optical head". The design of the beam expander system is too small, so that the illuminated area of ​​the object is also limited, and it is impossible to detect objects with a large field of view at a short distance; at the same time, the device is extremely inconvenient to use because the reference light reflector is placed separately on the object side

Method used

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  • Laser speckle detector head and application thereof
  • Laser speckle detector head and application thereof
  • Laser speckle detector head and application thereof

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Experimental program
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Effect test

Embodiment 1

[0015] Such as figure 1 , figure 2 As shown, the laser speckle detection head is composed of a detection head casing, a semiconductor laser 1, a photoelectric converter CCD 7, an optical lens 6, a shear mirror 4, and a beam expander 3. The detection head casing is composed of a detection head side plate 2, a detection The head front window 5, the detection head upper plate 8, and the detection head base 9 are composed of two holes on the detection head front window 5, the hole 11 is a laser irradiation hole, and the hole 12 is an imaging hole, which is used for the semiconductor laser 1 and the photoelectric converter CCD7 The screw and the fixing hole arranged on the casing base are fixed on the detection head casing base 9, the beam expander 3 and the semiconductor laser 1 are integrated, and the semiconductor laser 1 and the beam expander 3 are located on the same optical axis. The photoelectric converter CCD7, the optical lens 6, and the shear mirror 4 are connected as a...

Embodiment 2

[0017] The optical path when using the laser speckle detection head in embodiment 1 to detect the object tire is as follows image 3 shown. The semiconductor laser adopts a high-power semiconductor laser (generally greater than 100mW). The semiconductor laser 1 emits a laser beam. After the beam expander 3 connected to the semiconductor laser 1 is expanded, the laser beam is expanded from a small spot to a beam greater than 60°. The above light cone makes the tire of the detected object have a large illuminated area, and the laser light distribution on the laser irradiation surface is uniform, so that the incident light is irradiated on the tire 10 of the measured object, and the tire of the detected object is irradiated by the shear mirror 4 and the optical lens 6. The speckle field of 10 is imaged on a photoelectric converter CCD7 with high resolution (generally above 1024×1024), and its short-focus wide-angle lens 6 has a field of view greater than 60°. The photoelectric c...

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Abstract

The invention provides a speckle detecting probe, which comprises a casing, a semiconductor laser, an electric-to-optical transducer, an optical lens and shearing lens, a beam expanding lens, the semiconductor laser and the electric-to-optical transducer are secured on the foundation of the housing through screw rod and mounting holes, the beam expanding lens and the semiconductor laser are integrated, the electric-to-optical transducer, the optical lens and the shearing lens are also combined.

Description

technical field [0001] The invention belongs to the field of laser technology, in particular to a laser speckle detection head. Background technique [0002] At present, the optical system of the laser speckle detection head is mainly a laboratory device, and there are relatively few small and light detection heads. The domestic utility model patent number is 92226915.7, and the name is "a portable electronic speckle interferometer optical head". The design of the beam expander system is too small, so that the illuminated area of ​​the object is also limited, and it is impossible to detect objects with a large field of view at a short distance; at the same time, the device is extremely inconvenient to use because the reference light reflector is placed separately on the object side . Contents of the invention [0003] The object of the present invention is to overcome the deficiencies of the prior art and provide a high-p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/48
Inventor 曾启林赵志强谢雷郭修芹
Owner GUANGZHOU SCUT BESTRY TECHNOLOGY CO LTD
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