Lu CHEN, Hui LIU, Zhiming FENG, Xiyuan CHEN, Fan ZHANG, Ningyan XU, Qun YUAN, Zhishan GAO. Design Method of Wide Angle Lens Based on Optimization of Local Focal Length through Ray Tracing[J]. Acta Photonica Sinica, 2024, 53(3): 0322002
- Acta Photonica Sinica
- Vol. 53, Issue 3, 0322002 (2024)
Fig. 1. Principles for focal length calculation utilizing ray tracing
Fig. 2. Definitions for local focal length.
Fig. 3. Optical layouts of fisheye lens with 160° FOVs utilizing LFL raytracing and controlling
Fig. 4. Curves of targeted LFL and designed LFL for fisheye lens with 160°FOVs for the design configurations
Fig. 5. Grid distortions for fisheye lens with 160° FOVs for the design configurations
Fig. 6. Mapping relationships for curved object
Fig. 7. Ideal mapping relationships for curved object utilizing wide angle lens with 120° FOVs
Fig. 8. Optical layouts of wide angel lens with 120° FOVs for curved object with equal arc length mapping
Fig. 9. Designed result of wide angel lens with 120° FOVs for curved object with equal arc length mapping
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Table 1. Local focal length for projection models
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