大相对孔径、长焦距的紫外告警光学系统设计 下载: 991次
Design of Ultraviolet Warning Optical System with Large Relative Aperture and Long Focal Length
图 & 表
图 1. 光学系统结构图
Fig. 1. Structural diagram of optical system
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图 2. 不同温度下的紫外光学系统MTF曲线。(a) -10 ℃;(b) 20 ℃;(c) 40 ℃
Fig. 2. MTF curves of UV optical system at different temperatures. (a) -10 ℃; (b) 20 ℃; (c) 40 ℃
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图 3. 紫外镜头
Fig. 3. Ultraviolet lens
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表 1光学系统设计指标
Table1. Design parameters of optical system
Parameter | Value |
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Wavelength /nm | 260-270 | Focal length /mm | 100 | F number | 2 | FOV 2ω /(°) | 10 | Root-mean-square radiusof spot diagram /μm | ≤50 | Modulation transfer function(MTF) at 10 lp/mm | ≥0.4 |
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表 2不同温度条件下各视场点列图方均根半径
Table2. Root-mean-square radius of spot diagram of each field of view at different temperatures
Field ofview /(°) | Root-mean-square radius of spot diagramat different temperatures /μm |
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-10 ℃ | 20 ℃ | 40 ℃ |
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0 | 36.481 | 25.292 | 39.299 | 2 | 39.342 | 27.128 | 39.125 | 3 | 42.099 | 28.085 | 38.265 | 4 | 45.077 | 28.349 | 36.178 | 5 | 48.526 | 28.320 | 32.886 |
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表 3加工公差
Table3. Manufacturing tolerances
Lens | N | ΔN | Δn | Δt /mm | C /mm |
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Lens 1 | 4 | 0.5 | 0.0005 | ±0.05 | 0.02 | Lens 2 | 4 | 0.5 | 0.0005 | ±0.05 | 0.02 | Lens 3 | 4 | 0.5 | 0.0005 | ±0.05 | 0.02 | Lens 4 | 4 | 0.5 | 0.0005 | ±0.05 | 0.05 | Lens 5 | 4 | 0.5 | 0.0005 | ±0.05 | 0.02 | Lens 6 | 4 | 0.5 | 0.0005 | ±0.05 | 0.02 |
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表 4装调公差
Table4. Alignment tolerances
Lens | Δd /mm | Decentering /mm | Tilt /(') |
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Lens 1 | ±0.05 | 0.02 | 1 | Lens 2 | ±0.05 | 0.02 | 1 | Lens 3 | ±0.05 | 0.02 | 1 | Lens 4 | ±0.05 | 0.02 | 1 | Lens 5 | ±0.05 | 0.02 | 2 | Lens 6 | ±0.05 | 0.02 | 2 |
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曹桂丽, 刘芳芳, 贾永丹, 张倩, 徐崇斌. 大相对孔径、长焦距的紫外告警光学系统设计[J]. 激光与光电子学进展, 2019, 56(12): 122203. Guili Cao, Fangfang Liu, Yongdan Jia, Qian Zhang, Chongbin Xu. Design of Ultraviolet Warning Optical System with Large Relative Aperture and Long Focal Length[J]. Laser & Optoelectronics Progress, 2019, 56(12): 122203.