Patent ID: 11914127
Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A camera apparatus, comprising:
a first optical system;
a second optical system, sequentially from an object side to an image side of the second optical system, comprising:
a secondary reflecting mirror;
a main reflecting mirror having an opening in a center area thereof; and
a lens group, wherein light from the object side is sequentially reflected by the main reflecting mirror and the secondary reflecting mirror, and then enters the lens group through the opening,
wherein F2/F1>10, where F1 is a total effective focal length of the first optical system, and F2 is a total effective focal length of the second optical system; and
wherein the lens group, sequentially from the main reflecting mirror to the image side along an optical axis, comprises:
a first lens having positive refractive power;
a second lens having negative refractive power; and
a third lens having positive refractive power.