IMAGING OPTICAL SYSTEM, CAMERA APPARATUS AND STEREO CAMERA APPARATUS

摘要

A single focal imaging optical system includes, in order from an object side, a first lens group with a positive power, an aperture stop, and a second lens group with a positive power. The first lens group includes a first front lens group and a first rear lens group. The first front lens group includes a negative lens having a concave surface on an image side and a positive meniscus lens having a concave surface on the object side. The first rear lens group includes a biconvex lens. The second lens group includes a second front lens group with a negative power and a second rear lens group with a positive power. The system satisfies a following condition: 3.2

主权项

1. A single focal imaging optical system, comprising, in order from an object side:
a first lens group with a positive refractive power; an aperture stop; and a second lens group with a positive refractive power; wherein the first lens group includes, in order form the object side:
a first front lens group with a negative refractive power, the first front lens group including one negative lens and one positive lens, anda first rear lens group with a positive refractive power, the first rear lens group being a single lens, the first front lens group includes, in order from the object side, a negative lens having a concave surface on an image side and a positive meniscus lens having a concave surface on the object side, the first rear lens group includes a biconvex lens, the second lens group includes, in order from the object side, a second front lens group with a negative refractive power and a second rear lens group with a positive refractive power, and the imaging optical system satisfies a following condition (1):
3.2