Patent ID: 11867889
Assignee: NITTOH INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. The lens system according to claim 5,
wherein a distance Ld41 on an optical axis between a surface, which is convex on the image plane side, on the image plane side of the cemented lens disposed on the image plane side of the stop and a surface, which is concave on the object side, on the object side of the meniscus lens with positive refractive power, and a distance Ld43 on the optical axis between a surface, which is convex on the image plane side, on the image plane side of the meniscus lens with positive refractive power and a surface, which is concave on the object side, on the object side of the cemented lens disposed on the image plane side of the meniscus lens with positive refractive power satisfy a following condition:

7≤Ld41/Ld43≤23.