一个短镜头长度的光学模拟设计与一个曲的图像平面和相对照明分析
Wen-Shing Sun1, Chuen-Lin Tien2, Yi-Hong Liu1
1Department of Optics and Photonics, National Central University, Taoyuan 32001, Taiwan.
Micromachines
|January 23, 2024
概括
一种新的三镜头光学设计通过使用曲线图像平面来实现短镜头长度 (低于2毫米),改善了紧的成像系统的相对照明和对比度.
科学领域:
- 光学工程的光学工程.
- 几何光学是指几何光学.
背景情况:
- 减少镜头长度对于小型化光学系统至关重要.
- 缩短镜头长度可以加剧像场曲率和纹等偏差.
- 传统设计往往难以平衡紧性和光学性能.
研究的目的:
- 提出和分析一个紧的三镜头光学设计与短镜头长度.
- 为了研究曲线成像平面对光学性能的影响.
- 在小型镜头中优化相对照明和偏差校正.
主要方法:
- 利用一级几何光学来推导三镜头系统的参数关系.
- 采用曲面图像平面来减轻偏差并改善主要射线角度.
- 获得了相对照明度,固态角度和透射率的方程.
- 使用Code V软件验证了设计参数和性能.
主要成果:
- 实现了镜头长度在2mm以内,半场角为32°和F/2.7.7.
- 曲线图像平面有效地减少了第三阶赛德尔偏差.
- 证明了固体角度和相对对比度的增加.
- 关键性能指标包括MTF> 52% (100 lp/mm),侧面颜色< 2.12 μm,扭曲< 2.00%,相对照明> 68%.
结论:
- 拟议的短三镜头设计具有曲线图像平面,为紧的成像提供了可行的解决方案.
- 这种设计成功地平衡了小型化与高光学性能.
- 这些发现为开发先进的紧光学系统提供了基础.
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