Attenuator for measuring focused beam distribution of high-power lasers
A technology of focusing light beams and attenuating devices, which is applied in the direction of testing optical performance, optics, optical components, etc., to achieve the effects of improving safety and service life, easy to use, and simple structure
Active Publication Date: 2019-01-04
HUNAN DAYOPTRONICS CO LTD
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Problems solved by technology
[0002] With the increase of high-power laser beams and energy, the successful application of laser technology in the fields of machinery, electronics, aviation and other control and measurement mechanisms has multiplied, but due to its special beam characteristics and high power density, many measurement devices There are certain limitations in the use
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[0011] Attached below figure 1 The preferred embodiment of the present invention is further described, including a plane reflector 10, a lens group 20 and a spherical reflector 30 forming a telecentric imaging system 100, and also including a beam analyzer 40 and a high-power laser beam 50; the plane reflector 10 Comprising an upper working surface 11 and a lower working surface 12; the section 51 to be tested of the high-power laser beam 50 is located at the object plane of the one-time telecentric imaging system 100, and the working surface of the beam analyzer 40 is located at the one-time far away The image plane of the cardiac imaging system 100.
[0012] The upper working surface 11 of the plane reflecting mirror 10 is partially reflective, and the lower working surface 12 is coated with a high transmittance film; the lens surfaces of the lens group 20 are all coated with a high transmittance film; the spherical surface 31 of the spherical reflector 30 is partially refle...
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The invention relates to an attenuation device for measuring distribution of a high-power laser focused light beam. The attenuation device is composed of a planar reflector, a lens group and a spherical reflector, wherein the planar reflector comprises two working surfaces; the surfaces of lenses are plated with high-transmittance films; the spherical surface of the spherical reflector is partially reflective; the lens group and the spherical reflector form a double telecentric imaging system; a cross section to be measured of the high-power laser focused light beam is positioned on an object surface of the double telecentric imaging system; the high-power laser focused light beam is partially reflected through the working surfaces of the planar reflector, is further partially reflected through the lens group and the spherical surface of the spherical reflector, then passes through the lens group and the planar reflector, and arrives the working surface of a light beam analyzer on an image surface of the double telecentric imaging system. Through data processing by the light beam analyzer, intensity distribution of an arbitrary cross section of the high-power laser focused light beam can be learnt about.
Description
technical field [0001] The invention relates to the technical field of high-power laser beam testing, in particular to an attenuation device for measuring the distribution of high-power laser focused beams. Background technique [0002] With the increase of high-power laser beams and energy, the successful application of laser technology in the fields of machinery, electronics, aviation and other control and measurement mechanisms has multiplied, but due to its special beam characteristics and high power density, many measurement devices There are certain limitations in use. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, thereby providing an attenuation device for measuring the distribution of the focused beam of a high-power laser. [0004] The present invention is realized through the following technical solutions, including a flat reflector, a lens group and a spherical reflector to form a doubl...
Claims
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IPC IPC(8): G02B17/08G01M11/02
CPCG01M11/02G02B17/08
Inventor 鄢雨吴秀榕梁小生
Owner HUNAN DAYOPTRONICS CO LTD