Imaging lens and imaging apparatus with same

作者: Taro Asami , 太郎 浅見

DOI:

关键词: Regular polygonOpticsRadius of curvature (optics)Imaging lensPhysicsOptical powerFlat surface

摘要: PROBLEM TO BE SOLVED: To provide at a low cost an optical system that is compact, wide-angle, and bright while maintaining superior performance, in imaging lens. SOLUTION: The lens includes: order from its object side, negative first L1 of meniscus shape the convex surface which directed toward side; second L2 being either planoconcave flat side or biconcave having larger absolute value radius curvature third biconvex L3; stop St; positive fourth L4 smaller image cemented L56 with fifth L5 sixth L6 shape, refractive power, Abbe's number ν 3 d-line L3 satisfies inequality (1): < 43. COPYRIGHT: (C)2008,JPO&INPIT

参考文章(2)
Kumokawa Atsushi, Kawamoto Tadao, SINGLE FOCUS LENS AND GLASS DOUBLET USED THEREFOR ,(2002)