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Optical lens applied to ultraviolet laser

An optical lens and ultraviolet laser technology, applied in optics, optical components, instruments, etc., can solve the problems of affecting the focusing of ultraviolet lasers, the product is not fine and clear enough, and achieve the effect of wide application, fine processing effect and high work efficiency.

Active Publication Date: 2010-09-29
HANS LASER TECH IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide an f-theta optical lens for ultraviolet laser application, aiming to solve the problem that the existing lens affects the focus of ultraviolet laser and the processed products are not fine and clear enough

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  • Optical lens applied to ultraviolet laser
  • Optical lens applied to ultraviolet laser
  • Optical lens applied to ultraviolet laser

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[0025] The first lens L1 is composed of two curved surfaces S1 and S2 with curvature radii of R1=-27mm and R2=430mm respectively, the center thickness d1=2mm on the optical axis, and the material is Nd1:Vd1 is about 1.5 / 70; the second Lens L2 is composed of two curved surfaces S3 and S4 with curvature radii of R3=-63mm and R4=-43mm respectively, the central thickness d3=6mm on the optical axis, and the material is Nd3: Vd3 is about 1.6 / 41; the third lens L3 is composed of two curved surfaces S5 and S6 whose radii of curvature are R5=0mm and R6=-50mm respectively, the central thickness d5=15mm on the optical axis, and the material is Nd5:Vd5 is about 1.6 / 41; the fourth lens L4 is respectively It is composed of two curved surfaces S7 and S8 with curvature radii of R7=110mm and R8=0mm, the center thickness d7=9mm on the optical axis, and the material is Nd5:Vd5 is about 1.6 / 41; the flat mirror L5 is composed of curvature radii of R9=0mm, R10=0mm two curved surfaces S9, S10 consti...

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Abstract

The invention discloses an ultraviolet laser-applied f-theta optical lens. The optical lens comprises a first lens, a second lens, a third lend and a fourth lens which are positioned in the incident directions of light beams and arranged in order, wherein the first lens is a biconcave lens; the second lens is a meniscus lens, of which the curved surface bends towards the incident directions of the light beams; and the third lens is a planoconvex lens; and the fourth lens is a biconvex lens, wherein the optical lens is applied to the ultraviolet laser with the angle of vision of the lens of 50 degrees, the focal distance of 100mm, and the wavelength of 355nm in a processing range of 50mm*50mm. The ultraviolet laser has small focal spot and concentrated energy through the lens, and can mark or carve some processed special materials with superfine effects.

Description

【Technical field】 [0001] The invention relates to an f-theta optical lens for ultraviolet laser application. 【Background technique】 [0002] With the continuous development of laser processing, the types of media to be processed are increasing, and the processed effects are required to be more and more refined, especially for some special materials, which have different requirements for the wavelength of the laser. Some materials can no longer meet the processing requirements of these media with the laser wavelengths λ=1064nm and 532nm commonly used in the past; there are also some materials that can be processed by lasers with wavelengths of 1064nm and 532nm, but in order to achieve more fine and clear effects , or switch to short-wave ultraviolet laser processing, because its focusing spot is extremely small, as shown in the following formula: [0003] Rayleigh spot diameter δ=2.44λf / D [0004] It can be seen from the above formula that when using the same f / D optical le...

Claims

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Application Information

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IPC IPC(8): G02B13/14G02B13/18
Inventor 李家英周朝明高云峰
Owner HANS LASER TECH IND GRP CO LTD
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