Patent ID: 7542089

Claim:
A camera comprising: a first lens unit, formed of a plurality of lenses, on which a light beam is incident from a subject, a reflective member for reflecting a light beam, which has come from the subject and has been transmitted through the first lens unit, in a direction substantially perpendicular to the optical axis of the first lens unit, a first diaphragm member which is arranged on a surface of a lens of the first lens unit closest to the reflective member with the surface of the lens facing the reflective member, and which blocks unwanted rays of light other than the light beam that contributes to the forming of the image of the subject on an image formation surface, a second lens unit, formed of a plurality of lenses, on which the light beam reflected from the reflective member is incident, at least either one of a second diaphragm member or an unwanted ray-of-light reflection prevention member; wherein the second diaphragm member is arranged between the first lens unit and the second lens unit, and blocks unwanted rays of light that travel outside the outermost periphery at which the light beam forming the subject image traveling from the first lens unit to the reflective member intersects the light beam forming the subject image traveling from the reflective member to the second lens unit, and the unwanted ray-of-light reflection prevention member is arranged on the reflective member to prevent rays of light from being reflected from a region thereof other than the region thereof on which the light beam forming the subject image is incident, and a third diaphragm member, arranged in the vicinity of a surface of the lens of the second lens unit closest to the reflective member with the surface of the lens facing the reflective member, for blocking unwanted rays of light other than the light beam contributing to the formation of the subject image.