Patent ID: 7489359

Claim:
A lens adapter to be mounted on a collapsible lens-type camera with a lens barrel moving between a projection position projected to a front of a case and a housing position housed within the case, the lens adapter comprising: an attachment section configured to be mounted on the case in a detachable manner the attachment section includes a first member and a second member swingably engaging each other in a detachable manner the first member having a first cylindrical wall formed in a semi-cylindrical shape, which forms a portion of the cylindrical wall section and the second member having a second cylindrical wall formed in a semi-cylindrical shape, which forms a remaining portion of the cylindrical wall section; and the cylindrical wall section is formed with the first cylindrical wall and the second cylindrical wall, and a lens barrel housing section provided at the attachment section and configured to house the lens barrel, the lens barrel housing section includes a cylindrical wall section covering the lens barrel and an opening provided at a front end of the cylindrical wall section so as to expose a front end of the lens barrel, the cylindrical wall section has an internal diameter and length such that the lens barrel positioned at the projection position is covered, a female screw configured to attach optical components is formed at the opening, the attachment section together with the lens barrel housing section are configured to partially expose the case when mounted on the case.