Patent ID: 9389498
Filing Date: 2016-07-12
CPC Classification: G03B,H04N

Claim Text:
1. A 3D-image pickup optical system comprising: a pair of optical systems each including a magnification-varying lens unit, an aperture stop, a first lens unit, and a first reflective member in a sequential order from an object side toward an image side, the optical systems having optical axes offset from each other; a second lens unit that is fixed and receives object light fluxes from the pair of optical systems; a second reflective member that guides the object light fluxes from the pair of optical systems to the second lens unit; and a switching unit that is disposed in an object side of the second reflective member, and alternately guides the pair of the object light fluxes respectively from the pair of optical systems to the second reflective member, wherein: are satisfied, where d is one of a lens thickness or a lens interval in an optical axis direction, nd is a refractive index for d-line of a medium filling one of the lens thickness or the lens interval, fw is a focal length of an entire system at a wide angle end, fr