Abstract: An optical device includes a first optical element including an incidence plane on which light from an object is incident, the incidence plane being in contact with the surrounding environment; a main body having an inside and housing the first optical element such that the incidence plane and the inside of the main body are hermetically sealed; a second optical element provided in the main body, the second optical element receiving light from the first optical element; and an absorbent member provided in the main body. In the optical device, the absorbent member has a moisture absorptive capacity corresponding to at least an amount of water retention inside the main body.

Abstract: An optical device includes a first optical element including an incidence plane on which light from an object is incident, the incidence plane being in contact with the surrounding environment; a main body having an inside and housing the first optical element such that the incidence plane and the inside of the main body are hermetically sealed; a second optical element provided in the main body, the second optical element receiving light from the first optical element; and an absorbent member provided in the main body. In the optical device, the absorbent member has a moisture absorptive capacity corresponding to at least an amount of water retention inside the main body.

Abstract: To provide a binocular telescope including: a pair of objective optical systems; two cover members arranged in a first direction perpendicular to a plane defined by optical axes of the pair of objective optical systems, the two cover members being connected to form a cover unit, the cover unit substantially covering the pair of objective optical systems; and a reinforcing member connected to both the two cover members, the reinforcing member reducing deformation of the cover unit in the first direction.

Abstract: Binocular vibration correcting device comprises left and right vibration-correcting optical systems that correct images by being driven in the yaw and pitch directions in accordance with vibration. Optical system holding members hold the left and right vibration-correcting optical systems. Intermediate supporting member supports the optical system holding members so as to be able to rotate in the yaw direction and is supported by a main body member so as to be able to rotate in the pitch direction. The optical system holding members are connected so as to be able to rotate in the yaw direction at a position distanced in the optical axis direction away from the yaw direction rotational axes of the optical system holding members.

Abstract: A binocular of this invention includes a pair of objective optical systems, a pair of eyepiece units for integrally holding erecting optical systems and eyepiece optical systems, and a holding member having a first holding portion for holding one of the pair of eyepiece units and a second holding portion for holding the other one of the pair of eyepiece units. The holding member is deformed such that the pair of eyepiece units has a predetermined positional relationship.

Abstract: A binocular of this invention includes a pair of objective optical systems, a pair of eyepiece units for integrally holding erecting optical systems and eyepiece optical systems, and a holding member having a first holding portion for holding one of the pair of eyepiece units and a second holding portion for holding the other one of the pair of eyepiece units. The holding member is deformed such that the pair of eyepiece units has a predetermined positional relationship.

Abstract: A binocular vibration correcting device is disclosed.

Abstract: A binocular includes a pair of objective lenses, a pair of eyepieces for observing images formed by the pair of objective lenses, and a connection member arranged to integrally interconnect at least respective parts of the pair of objective lenses, wherein optical images being observed are stabilized by driving and decentering the connection member with respect to optical axes of the pair of objective lenses.

Abstract: A zoom lens barrel is provided in which the amount of forward movement made by a focus lens is altered in accordance with a change in a focal length caused by a zooming operation. The zoom lens barrel includes a moving mechanism for rotating a cam member around an optical axis and for moving this cam member in the direction of the optical axis in response to the zooming operation; a first cam for moving a zoom lens in the direction of the optical axis on the basis of the rotation around the optical axis and the movement in the direction of the optical axis; and a second cam for moving the focus lens, which focus lens is used for zooming and focusing, in the direction of the optical axis. The first and second cams are provided for the cam member.

Abstract: A lens barrel includes a fixed tube, a moving tube arranged to move in the direction of an optical axis over the outer circumference of the fixed tube and to have a cutout part, and a band-like circuit board disposed around the optical axis on the outside of the fixed tube and having a part located inside the moving tube within an area corresponding to the cutout part and a part located outside the moving tube within an area other than the area corresponding to the cutout part.

Abstract: An optical apparatus is provided with a main operation member arranged to permit both a rectilinear operation and a rotational operation, a subordinate operation member arranged to be operated to vary an operating force required for operating the main operation member to a greater extent for the rectilinear operation than for the rotational operation, a first optical adjustment mechanism arranged to perform a first optical adjusting action in association with the rectilinear operation of the main operation member, and a second optical adjustment mechanism arranged to perform a second optical adjusting action in association with the rotational operation of the main operation member.

Abstract: An optical apparatus is provided with a main operation member arranged to permit both a rectilinear operation and a rotational operation, a subordinate operation member arranged to be operated to vary an operating force required for operating the main operation member to a greater extent for the rectilinear operation than for the rotational operation, a first optical adjustment mechanism arranged to perform a first optical adjusting action in association with the rectilinear operation of the main operation member, and a second optical adjustment mechanism arranged to perform a second optical adjusting action in association with the rotational operation of the main operation member.

Abstract: A zoom lens barrel is provided in which the amount of forward movement made by a focus lens is altered in accordance with a change in a focal length caused by a zooming operation. The zoom lens barrel includes a moving mechanism for rotating a cam member around an optical axis and for moving this cam member in the direction of the optical axis in response to the zooming operation; a first cam for moving a zoom lens in the direction of the optical axis on the basis of the rotation around the optical axis and the movement in the direction of the optical axis; and a second cam for moving the focus lens, which focus lens is used for zooming and focusing, in the direction of the optical axis. The first and second cams are provided for the cam member.

Abstract: A lens barrel includes a fixed tube, a moving tube arranged to move in the direction of an optical axis over the outer circumference of the fixed tube and to have a cutout part, and a band-like circuit board disposed around the optical axis on the outside of the fixed tube and having a part located inside the moving tube within an area corresponding to the cutout part and a part located outside the moving tube within an area other than the area corresponding to the cutout part.

Abstract: A zoom lens barrel is provided in which the amount of forward movement made by a focus lens is altered in accordance with a change in a focal length caused by a zooming operation. The zoom lens barrel includes a moving mechanism for rotating a cam member around an optical axis and for moving this cam member in the direction of the optical axis in response to the zooming operation; a first cam for moving a zoom lens in the direction of the optical axis on the basis of the rotation around the optical axis and the movement in the direction of the optical axis; and a second cam for moving the focus lens, which focus lens is used for zooming and focusing, in the direction of the optical axis. The first and second cams are provided for the cam member.

Abstract: A lens barrel includes a vibrating motor which serves as a driving source, a rotating member driven by the vibrating motor, a bearing mechanism for rotatably supporting the rotating member, and a urging member for urging the rotating member and the roller in a direction in which they make contact with each other. The bearing mechanism includes a roller having an axis which lies in a radial direction of an axis of the vibrating motor.

Abstract: A flexible printed circuit board of band shape installed within a tubular or hollow polygonal prismatic casing along the circumferential direction of the casing is composed of at least two flat areas formed in the flexible printed circuit board, and circuit elements mounted on the flat areas.

Abstract: A zoom lens of the kind varying the focusing movement degree of a focusing-and-zooming lens according to the change of focal length caused by a power varying operation comprises a zooming cam member which rotates around an optical axis in response to zooming; a zoom cam formed in the zooming cam member; a first cam follower which engages the zoom cam; a zooming lens group which is movable in association with the movement of the first cam follower; a focusing cam member; a focus cam formed in the focusing cam member; a second cam follower which engages the focus cam; the focusing-and-zooming lens which is movable in association with the movement of the second cam follower; a focusing rotation member which rotates the second cam follower in response to a focusing action; and a moving mechanism which is arranged to vary the position of the focus cam by moving the focusing cam member in the optical axis direction in response to the rotation of the zooming cam member, in such a manner that a range of engagement of

Abstract: A flexible printed circuit board of band shape installed within a tubular or hollow polygonal prismatic casing along the circumferential direction of the casing is composed of at least two flat areas formed in the flexible printed circuit board, and circuit elements mounted on the flat areas.