Patent ID: 8068294

Claim:
A lens barrel, comprising: a first lens configured and arranged to take in a light flux incident along a first optical axis; a bending member including a reflecting surface configured and arranged to reflect the light flux passing through the first lens to a direction along a second optical axis intersecting with the first optical axis; and a second lens configured and arranged to take in the light flux reflected by the bending member, the first lens abutting the bending member, at least one of the bending member and the first lens including a first flat surface portion having a planar shape, the bending member and the first lens being in contact with each other via at least a part of the first flat surface portion, the bending member further including an entrance surface having a first region that receives the light flux exiting from the first lens, and a second region positioned on the outer peripheral side of the first region and including the first flat surface portion, and a gap being formed between the first lens and the first region of the entrance surface.