折/衍混合照相镜头设计研究

Study on the design of hybrid diffractive-refractive camera lens

为了减轻光学系统的质量,缩小光学系统的体积,降低光学系统的制造成本,设计了将折射光学器件和衍射光学器件相结合的成像系统,该系统综合光的折射原理和光的衍射原理,把一个六片四组式的双高斯镜头优化成一个工作在可见光波段的,成像质量优良的一个既包含折射透镜又包含衍射透镜的混合照相镜头。该镜头的焦距是50mm,视场角是47°,F数是1∶4。经过优化以后的混合镜头和初始镜头相比,无论是是镜头尺寸、整体结构、成像质量等方面都有很大的进步,与此同时也体现出了衍射元器件在光学成像领域无可替代的优势。

In order to reduce the quality of the optical system, reduce the size of the optical system, reduce the manufacturing cost of the optical system, the design of imaging system of optical devices and refractive diffractive optical elements by combining the diffraction principle and the light refraction principle of integrated optical system, the double Gauss lens, a six piece group four type optimization into a working in the visible band, excellent image quality both contains refractive lens contains diffractive lens hybrid camera lens. The focal length of the lens is 50mm, the angle of view is 47 degrees, and the number of F is 1：4. After optimizing the hybrid lens and the initial lens compared to both is the lens size, overall structure, image quality has made great progress, at the same time also reflects the diffraction components in the field of optical imaging irreplaceable advantages.