镜头(地质)
公差分析
计算机科学
光学
物理
工程制图
工程类
作者
Wei Sun,Yi-Chih Hsu,Yihong Liu,Chuen‐Lin Tien,Yantao Su,Shiang-Shiuan Tsai,Ching-Cherng Sun
出处
期刊:Optik
[Elsevier]
日期:2024-03-01
卷期号:: 171711-171711
标识
DOI:10.1016/j.ijleo.2024.171711
摘要
This paper describes a depth camera lens design composed of eight glass lenses, where the field of view is 100°, the focal length is 1.88 mm, and the F/# is 2. The lens design requires the lens to be fixed and the object distance to be fixed at -745.964 mm. The depth of focus ranges from -0.0047 mm to 0.0096 mm and can be obtained by selecting a spatial frequency of 60 lp/mm for the Through-focus MTF optimization design. The object distance ranges from negative infinity (-∞) to -250 mm (for the depth of field), the MTF is greater than 0.73 at 60 lp/mm, the lateral color difference is less than 1.58 μm, the optical distortion is less than 1%, and the relative illumination is greater than 64%. When conducting tolerance analysis, we select a spatial frequency requirement of tolerance MTF>0.3. At an object distance of -745.964 mm, the lens resolution can reach 80 lp/mm. The object distance is -∞, and the lens resolution is above 59 lp/mm. The object distance is -250 mm, and the lens resolution can reach over 43 lp/mm. In this work, the depth camera lens is designed to have an object distance shooting range of -6 m to -0.25 m. When the object distance is -6 m, the object depth resolution is 61 mm; while at the object distance of -0.25 m, the object depth resolution is 0.1045 mm.
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