Patent ID: 7830625

Claim:
A lens positioning jig for allowing a second lens barrel to be positioned in a housing including a barrel insertion portion into which a first lens barrel is inserted; a barrel attachment portion to which a first flange provided in an outer circumference of the first lens barrel is attached; and a barrel attachment groove which allows a second flange provided in an outer circumference of the second lens barrel to be inserted in a direction perpendicular to an optical axis of the first lens barrel and allows the second lens barrel to be held on the optical axis of the first lens barrel, the lens positioning jig comprising: a housing holding portion that holds the housing by positioning the barrel attachment portion; and a lens holding portion that is inserted through the barrel insertion portion when the housing is held by the housing holding portion, wherein the lens holding portion sucks and holds a lens of the second lens barrel so that (i) the lens of the second lens barrel has a given position and angle with respect to the barrel attachment portion and (ii) the second flange does not come in contact with the barrel attachment groove.