Infrared and Laser Engineering, Volume. 50, Issue 3, 20200219(2021)
Collimating lens design and aspheric optimization method of laser cauterization gun
Figures & Tables(15)
Fig. 1. Transformation of a Gaussian beam through a spherical single lens
Fig. 2. Schematic diagram of mirror depression degree and radius
Table 1. [in Chinese]
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Material Applicable wavelength/μm Refractive index at 1 064 nm Abbe number K5 0.4-1.0 1.523 59.48 K9(BK7) 0.3-2.3 1.516 64.17 MgF2 0.5-0.9 1.360 59.10 ZnS 0.4-14.5 2.250 28.32 CaF2 0.4-11.5 1.430 95.3 ZnSe 0.5-22.0 2.440 24.38 MgO 0.4-9.5 1.690 49.71
Table 2. [in Chinese]
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Parameter Value Effective range/m 200 Spot diameter/mm 10 Lens diameter/mm 25 Lens material K9 Uniformity of spot energy ±（4.2%-4.3%）
Table 3. [in Chinese]
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Main lens parameter Value/mm Object numerical aperture NA = 0.1 Effective focal length 181.59 Fiber core diameter 0.01 Paraxial image height 2.5 Pupil diameter 17.64 Radius of curvature 92 Image distance 200000
Table 4. [in Chinese]
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Tolerance type Parameter Value/mm Surface tolerance Radius 0.32 Thickness 0.1 Decenter X, Y 0.1 Tilt X, Y 0.1 S+A irregularity 0.012 Element tolerance Decenter X 0.03 Decenter Y 0.03 Start at surface 1 Stop at surface 4
Table 5. [in Chinese]
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Spot radius Value 90%> 5.01700970 80%> 1.95096272 50%> 0.73902551 20%> 0.33496534 10%> 0.22416649
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Chenyang Lv, Renjun Zhan, Ying Cui. Collimating lens design and aspheric optimization method of laser cauterization gun[J]. Infrared and Laser Engineering, 2021, 50(3): 20200219
Paper Information
Category: Optical design
Received: Jun. 5, 2020
Accepted: --
Published Online: Jul. 15, 2021
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