Analysis and design of optical system for the defocused light field cameras

Weiqi Lu, Jiacheng Zhu, Weimin Shen
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Abstract

As a snapshot 3D imaging technology, light field imaging is able to obtain the 3D information of objects in a single exposure and widely used in numerous fields. The paper analyzed the 3D imaging principles of defocused light field camera and elaborated the relationships between its performance indexes and structural parameters, then a performance index system of defocused light field camera was established. An image-telecentric optical system of defocused light field camera with wavelength range of 0.4-0.9μm, field-of-view of 24.5°, F-number of 5 was designed detailly. Aimed at the lack of a unified image quality evaluation method for defocused light field camera, it was proposed to add pupil aberration as an additional evaluation index on the basis of classical image quality evaluation. The result indicates that the designed defocused light field camera achieved excellent image quality and all indexes met the requirements.
散焦光场照相机光学系统的分析与设计
作为一种快照三维成像技术,光场成像能够在一次曝光中获取物体的三维信息,在众多领域得到广泛应用。本文分析了散焦光场相机的三维成像原理,阐述了其性能指标与结构参数之间的关系,进而建立了散焦光场相机的性能指标体系。详细设计了波长范围为 0.4-0.9μm、视场角为 24.5°、F 数为 5 的散焦光场相机图像天心光学系统。针对散焦光场相机缺乏统一的图像质量评价方法的问题,提出在经典图像质量评价的基础上,增加瞳孔像差作为附加评价指标。结果表明,所设计的散焦光场相机图像质量优异,各项指标均符合要求。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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