Patent ID: 9739983
Date: 2017-08-22
CPC Classifications: G02B,H04N

Claim:
1. An imaging device comprising: a plurality of imaging optical systems each including a wide-angle lens and an imaging sensor, wherein the wide-angle lens includes, in order from an object side to an image side, a front group, a reflection surface, and a back group, the wide-angle lens has an angle of view of 180 degrees or more, the front group has a negative power, the back group has a positive power, the front group includes a meniscus lens having a negative refractive power, an aspheric surface meniscus lens having a negative refractive power, and a negative meniscus lens, the back group includes a biconvex lens having a positive refractive power, a cemented lens of a biconvex lens having a positive refractive power and a biconcave lens having a negative refractive power, and a biconvex lens having a positive refractive power, and a distance from a most object side surface of the front group to the reflection surface LF and a distance from the reflection surface to a most image side surface of the back group LR satisfy the following condition: