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Size-adjustable soft diaphragm and dimming assembly comprising same

A technology of soft diaphragm teeth and diaphragms, applied in optical components, optics, instruments, etc., to achieve the effect of low integration difficulty, high flexibility, and elimination of strong hearts

Active Publication Date: 2022-01-25
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is: in order to solve the above-mentioned problems of how to suppress the diffraction effect and how to adjust the spot size, the present invention provides a size-adjustable soft diaphragm and a dimming assembly including the soft diaphragm

Method used

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  • Size-adjustable soft diaphragm and dimming assembly comprising same
  • Size-adjustable soft diaphragm and dimming assembly comprising same
  • Size-adjustable soft diaphragm and dimming assembly comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] like Figure 1-9 As shown, a size-adjustable soft diaphragm includes a front cover 1, and the inner side of the front cover 1 is sequentially provided with a longitudinal slide rail fixing plate 2 and a soft diaphragm tooth a assembly 3 coaxially with the front cover 1 , adjust the slide rail rotating part 4 and the rear cover 5, and the longitudinal slide rail fixing plate 2 is evenly provided with a plurality of guide rail grooves a6 along the diameter direction (each guide rail groove a6 is respectively matched with the strip shape at the top of each soft diaphragm tooth The boss structure 14 is used to fix the lateral position of each soft diaphragm tooth, so that it can only move in a straight line in the radial direction (along the direction of the circle radius), and at the same time ensure that the soft diaphragm teeth are facing fixed, and no misalignment rotation occurs) , the soft diaphragm teeth a assembly 3 includes a plurality of soft diaphragm teeth, a pl...

Embodiment 2

[0051] like Figure 10 as shown,

[0052] A dimming assembly including a size-adjustable soft diaphragm, including a central fixing plate 22, symmetrical dovetail slide rails 23 with scales are arranged symmetrically on both sides of the central fixing plate 22, and the central fixing plate 22 A size-adjustable soft diaphragm 21 is arranged in the middle, and the central fixed plates 22 on both sides of the size-adjustable soft diaphragm 21 are respectively symmetrically provided with long focal length convex lenses 20 with fixed mirror frames, each of which The symmetrical dovetail slide rail 23 with scale is all provided with slide block 24, all is provided with the short focal length concave lens 19 that has fixed mirror frame on each described slide block 24 (each described symmetrical dovetail slide rail 23 with scale Length matches the focal length of the long focal length convex lens).

[0053] Further, the size-adjustable soft diaphragm 21, the optical axis of the lo...

Embodiment 3

[0056] like Figures 1 to 9 As shown, this embodiment provides a size-adjustable soft diaphragm, which includes a front cover 1 , and three through holes 9 for fixing are arranged on the front cover 1 .

[0057] The longitudinal slide rail fixing plate 2 is provided with 3 through holes 9 for fixing, 120 guide rail grooves a6 evenly distributed along the diameter direction, the included angle between adjacent guide grooves is 3°, matching the length of the soft aperture teeth. The bar-shaped pillar structure 7, each rail groove a6 cooperates with the bar-shaped boss structure 14 at the top of each soft diaphragm tooth respectively, and is used to fix the lateral position of each soft diaphragm tooth so that it can only move in the radial direction (along the The direction of the radius of the circle) moves in a straight line, while ensuring that the teeth of the soft diaphragm are fixed in the direction without misalignment and rotation. The size of the hollow inner circle of ...

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Abstract

The invention discloses a soft diaphragm with an adjustable size and a dimming assembly comprising the soft diaphragm, relates to the technical field of laser processing, and solves the problems of how to suppress a diffraction effect and how to adjust the size of a light spot. The soft diaphragm includes a front cover; a longitudinal sliding rail fixing plate, a soft diaphragm tooth a assembly, an adjusting sliding rail rotating piece and a rear cover are sequentially arranged on the inner side of the front cover and are coaxial with the front cover. According to the invention, through the arrangement of the size-adjustable soft diaphragm, the diffraction problem caused by the use of a small-aperture diaphragm in a laser light path can be effectively inhibited; when the soft diaphragm is applied to a lens combination sliding rail system, the roundness of a laser spot can be improved on the premise of suppressing a diffraction ring; laser can be expanded and shrunk, so that the size and the roundness of a required light spot are flexibly adjusted, and the laser processing quality is improved; and if necessary, circular nearly-flat-topped light can be intercepted and generated through the soft diaphragm, so that different micromachining requirements are met.

Description

technical field [0001] The present invention relates to the technical field of laser processing, and more specifically relates to the technical field of a soft diaphragm and a dimming component thereof. Background technique [0002] At present, lasers are used in many fields such as scientific research and industry. Laser processing has the characteristics of good material selectivity, high processing precision, and strong processing directivity, and has become a major processing system in the field of precision micromachining. In the optical path of laser processing equipment, the size and roundness of the cross-section of the laser beam depend on the output characteristics of the laser. However, limited by the existing laser technology, the roundness of the laser spot output by the laser is not ideal. In high-precision processing, it is often necessary to add a small hole diaphragm to intercept the spot, so as to reduce the cross-sectional area of ​​the laser beam and imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/02G02B5/00
CPCG02B26/02G02B5/005Y02B20/40
Inventor 黄滟荻宋成伟杨亮李国刘峰张春雨陈前君
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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