Patent ID: 8456562

Claim:
An image pickup unit comprising: a first optical system holding frame configured to hold a first object lens group; a second optical system holding frame fit in the first optical system holding frame and configured to hold a second object lens group and store a prism that reflects photographing light made incident on the first object lens group and subjects the photographing light to optical path conversion; and a third optical system holding frame fit in the second optical system holding frame and configured to hold an image pickup device that detects the photographing light subjected to the optical path conversion by the prism and photoelectrically converts the photographing light, wherein, the first optical system holding frame has a hole axis orthogonal to an optical axis of the photographing light made incident on the first object lens group, and a through-hole portion through which the second optical system holding frame can be inserted and arranged is formed in the first optical system holding frame, and the first optical system holding frame and the second optical system holding frame are set relatively movable in a direction orthogonal to the optical axis of the photographing light made incident on the first object lens group, and the second optical system holding frame and the third optical system holding frame are set relatively movable in a direction along the optical axis of the photographing light made incident on the solid-state image pickup device such that predetermined optical performance adjustment can be performed during assembly.