Patent ID: 11940603
Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. The telephoto lens of claim 4, wherein the telephoto lens further meets the conditional formulas:

−1.05<SF5<−0.75; and

1.65<SF6<2.65,

wherein SF5=(C15+C25)/(C15−C25), SF6=(C16+C26)/(C16−C26);
C15 is the radius of curvature of the fifth lens adjacent to the object side, and C25 is the radius of curvature of the fifth lens adjacent to the imaging surface, C16 is the radius of curvature of the sixth lens adjacent to the object side, and C26 is the radius of curvature of the sixth lens adjacent to the imaging surface.