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Small-fan-angle laser line light source module

A laser line light source and fan angle technology, applied in the laser field, can solve the problems of high cost of light source modules, stray light, unclear laser lines, etc., and achieve the effect of simple manufacturing, clear light, and favorable mass production

Inactive Publication Date: 2020-11-06
QINGDAO LASENCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems of high cost of light source modules, unclear laser lines and stray light in the prior art

Method used

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  • Small-fan-angle laser line light source module
  • Small-fan-angle laser line light source module
  • Small-fan-angle laser line light source module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A small fan angle laser line light source module, including a pumping source 1, a laser working substance 2, a cylindrical lens 3, a beam expander 4 and a collimating mirror 5, the pumping source 1, a laser working substance 2, a cylindrical lens 3. The beam expander 4 and the collimator 5 are arranged in sequence, and the light emitted by the pump source 1 undergoes wavelength conversion, compression, beam expansion, and collimation in sequence to emit a laser line with a small fan angle.

[0044] Based on the setting of the specific positions of the pump source 1, the laser working substance 2, the cylindrical lens 3, the beam expander 4, and the collimator 5, the light is first compressed by the cylindrical lens 3 to meet the requirements of forming light with a small fan angle, and then Through the beam expander 4 and the collimator 5; different from the prior art, the present invention first passes through the cylindrical lens 3 and then through the beam expander 4 ...

Embodiment 2

[0049] On the basis of Embodiment 1, further, the front end surface of the laser working substance 2 is located on the front focus of the cylindrical lens 3, and the back focus of the cylindrical lens 3 falls on the front focus of the beam expander 4, and the beam expander 4 The back focus of falls on the front focus of collimator mirror 5.

[0050] By strictly controlling the distances between the pump source, the laser working substance 2, the cylindrical lens 3, the beam expander 4 and the collimator 5, the purpose of saving equipment can be achieved under the premise of satisfying the formation of a small fan-angle laser line, so that the light source module of volume reduction.

[0051] Further, a coupling lens is arranged between the pump source 1 and the laser working substance 2 .

[0052] The coupling lens can focus the light emitted by the pump source 1, thereby increasing the energy density of the light injected into the laser working substance 2, so as to achieve ...

Embodiment 3

[0062] A small fan angle laser line light source module, including a pumping source 1, a laser working substance 2, a cylindrical lens 3, a beam expander 4 and a collimating mirror 5, the pumping source 1, the laser working substance 2, a cylindrical lens 3. The beam expander 4 and the collimator 5 are arranged in sequence, and the light emitted by the pump source 1 undergoes wavelength conversion, compression, beam expansion, and collimation in sequence to emit a laser line with a small fan angle.

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Abstract

The invention relates to the technical field of laser, in particular to a small-fan-angle laser line light source module. The light source module comprises a pumping source, a laser working substance,a cylindrical lens, a beam expander and a collimating mirror. The pumping source, the laser working substance, the cylindrical lens, the beam expander and the collimating mirror are sequentially arranged, and light emitted by the pumping source is sequentially subjected to wavelength conversion, compression, beam expansion and collimation to form laser lines with small fan angles. According to the invention, the pumping source, the laser working substance, the cylindrical lens, the beam expander and the collimating mirror are sequentially arranged at specific positions, so that the purpose ofsaving cost can be achieved, and laser rays can be ensured to be clear and free of stray light.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a small fan angle laser line light source module. Background technique [0002] The laser line throwing instrument is widely used in construction projects, and it has the functions of the original level and theodolite marking. It uses laser lines to accurately project the working alignment on the working object, making the construction process more convenient and time-saving. With the continuous development of technology, the application field of the laser line projector is also continuously expanded, which also puts forward higher requirements for the performance of the laser line projector itself. [0003] At present, the main methods of obtaining laser line projectors with small fan angles (less than 30°) on the market are: [0004] 1. After the laser light source is collimated with a lens group beam expander, it is matched with a Powell prism with a small fan angle to obtain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/101H01S3/00G02B27/09
CPCG02B27/0927G02B27/0966H01S3/0071H01S3/101
Inventor 孙国文
Owner QINGDAO LASENCE
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