US 7,321,470 B2
Camera
Naoki Matsumoto, Hachioji (Japan); Hitoshi Yoshida, Hachioji (Japan); Akira Futami, Higashikurume (Japan); Toshifumi Nakano, Sagamihara (Japan); and Tsuyoshi Kawai, Hachioji (Japan)
Assigned to Olympus Corporation, Tokyo (Japan)
Filed on Apr. 07, 2005, as Appl. No. 11/100,922.
Application 11/100922 is a continuation of application No. PCT/JP03/12827, filed on Oct. 07, 2003.
Claims priority of application No. 2002-295256 (JP), filed on Oct. 08, 2002; application No. 2002-295257 (JP), filed on Oct. 08, 2002; application No. 2002-295258 (JP), filed on Oct. 08, 2002; application No. 2002-310076 (JP), filed on Oct. 24, 2002; and application No. 2002-339717 (JP), filed on Nov. 22, 2002.
Prior Publication US 2005/0168834 A1, Aug. 04, 2005
Int. Cl. G02B 7/02 (2006.01)
U.S. Cl. 359—694  [359/821; 359/822] 25 Claims
OG exemplary drawing
 
1. A camera including a lens barrel having a reflection optical member for reflecting a light beam incident along a first optical axis from a subject so as to reflect the light beam toward a second optical axis intersecting the first optical axis, the lens barrel comprising:
a lens group arranged along the second optical axis;
a holding frame for holding the lens group movably along the second optical axis; and
shutter means moving integrally with the holding frame and including a shielding member movable between a position masking an exposure opening on a plane substantially perpendicular to the second optical axis and a position opening the exposure opening,
wherein the shielding member is linearly moved in a direction substantially perpendicular to an optical axial plane inclusive of the first optical axis and the second optical axis, said light-quantity adjusting member being movable in a second plane parallel to the first optical axis and orthogonal to the second optical axis.