Abstract: A zoom lens barrel includes a base member 1001, a linear cylinder 700 fixed on the base member 1001, a cam cylinder 800 configured to be rotatable with respect to the linear cylinder 700, a ball member 701 and a pin member 702 provided on the linear cylinder 700, and a plurality of optical component units. The cam cylinder 800 includes a cam groove 800d that the ball member 701 contacts and that determines a position in an optical axis direction of the cam cylinder 800 with respect to the linear cylinder 700, and a cam groove 800i that the pin member 702 engages with in a radial direction of the cam cylinder 800 and that the pin member 702 contacts in two directions different from each other that are the optical axis direction.

Abstract: A zoom lens barrel includes a first optical element 300, 400 and a second optical element 600, a first guide member 703 configured to linearly guide the first optical element 300, 400 in an optical axis direction, a second guide member 704 configured to linearly guide the second optical element 600 in the optical axis direction, and a linear cylinder 700 including an opening portion configured to be able to integrate the first optical element and the second optical element only in the optical axis direction, a first holding portion 700g, 700h that supports both ends of the first guide member, and a second holding portion 700i, 700j that supports both ends of the second guide member.

Abstract: A zoom lens barrel capable of attaining a higher photographing magnification by reducing spacing between lens groups in a telephoto state. A first lens group barrel holds a first lens group. A second lens group holding member supported by a third cam barrel holds a second lens group. A spring member urges the holding member toward the first lens group. Cam followers are formed at an opposite end of the holding member from the first lens group. Cam grooves for engagement with the cam followers are formed on the third cam barrel. When the holding member is urged by the spring member in a non-shooting region, each cam groove is brought into contact via one cam surface with the associated cam follower. In a shooting region, the cam groove is brought into contact with the cam follower via two cam surfaces.

Abstract: A zoom lens barrel includes a first optical element 300, 400 and a second optical element 600, a first guide member 703 configured to linearly guide the first optical element 300, 400 in an optical axis direction, a second guide member 704 configured to linearly guide the second optical element 600 in the optical axis direction, and a linear cylinder 700 including an opening portion configured to be able to integrate the first optical element and the second optical element only in the optical axis direction, a first holding portion 700g, 700h that supports both ends of the first guide member, and a second holding portion 700i, 700j that supports both ends of the second guide member.

Abstract: A zoom lens barrel includes a base member 1001, a linear cylinder 700 fixed on the base member 1001, a cam cylinder 800 configured to be rotatable with respect to the linear cylinder 700, a ball member 701 and a pin member 702 provided on the linear cylinder 700, and a plurality of optical component units. The cam cylinder 800 includes a cam groove 800d that the ball member 701 contacts and that determines a position in an optical axis direction of the cam cylinder 800 with respect to the linear cylinder 700, and a cam groove 800i that the pin member 702 engages with in a radial direction of the cam cylinder 800 and that the pin member 702 contacts in two directions different from each other that are the optical axis direction.

Abstract: A zoom lens barrel capable of attaining a higher photographing magnification by reducing spacing between lens groups in a telephoto state. A first lens group barrel holds a first lens group. A second lens group holding member supported by a third cam barrel holds a second lens group. A spring member urges the holding member toward the first lens group. Cam followers are formed at an opposite end of the holding member from the first lens group. Cam grooves for engagement with the cam followers are formed on the third cam barrel. When the holding member is urged by the spring member in a non-shooting region, each cam groove is brought into contact via one cam surface with the associated cam follower. In a shooting region, the cam groove is brought into contact with the cam follower via two cam surfaces.

Abstract: A lens barrel capable of being reduced in length in a collapsed position. Barrier members have an opening/closing operation plane that openably/closably covers the front face of an image-taking lens. A barrier drive mechanism causes the barrier members to perform opening/closing operation. A lens holding member has a holding portion that holds the image-taking lens and a guide portion that guides the image-taking lens in the optical axis direction. A lens drive mechanism causes the lens holding member to move forward or backward in the optical axis direction. A stroke area of the guide portion of the lens holding member is set to overlap the opening/closing operation plane of the barrier members in the optical axis direction.

Abstract: A lens apparatus is disclosed which allows a reduced overall length when it is put into a barrel body while a high magnification of taken images is realized. The lens apparatus includes a first holding member which holds a first lens unit; a second holding member which holds a second lens unit disposed closer to an image plane side than the first lens unit; a first cam member which has a first cam portion driving the first holding member in an optical axis direction; a second cam member which has a second cam portion driving the first cam member in the optical axis direction; and a third cam member which includes a third cam portion driving the second holding member in the optical axis direction.

Abstract: Flexible printed boards are introduced to a camera body respectively through a plurality of slit holes formed in a rotating barrel at different positions in the direction of an optical axis. The outer dimension of the lens barrel is kept from increasing.

Abstract: There is provided a lens barrel on which a flexible substrate having mounted thereon an image pickup element for photoelectrically converting an optical image imaged by a photo-taking lens is mounted, having a plurality of lens barrel members disposed movable forward and backward in the direction of an optical axis, and moving the photo-taking lens between a stored position which is the image pickup element side in the direction of the optical axis and a photographing position which is an object side in the direction of the optical axis, and an image pickup element supporting unit for supporting the image pickup element, and having a notched portion so that at least one of the plurality of lens barrel members may face the flexible substrate.

Abstract: A lens barrel capable of being reduced in length in a collapsed position. Barrier members have an opening/closing operation plane that openably/closably covers the front face of an image-taking lens. A barrier drive mechanism causes the barrier members to perform opening/closing operation. A lens holding member has a holding portion that holds the image-taking lens and a guide portion that guides the image-taking lens in the optical axis direction. A lens drive mechanism causes the lens holding member to move forward or backward in the optical axis direction. A stroke area of the guide portion of the lens holding member is set to overlap the opening/closing operation plane of the barrier members in the optical axis direction.

Abstract: There is provided a lens barrel on which a flexible substrate having mounted thereon an image pickup element for photoelectrically converting an optical image imaged by a photo-taking lens is mounted, having a plurality of lens barrel members disposed movable forward and backward in the direction of an optical axis, and moving the photo-taking lens between a stored position which is the image pickup element side in the direction of the optical axis and a photographing position which is an object side in the direction of the optical axis, and an image pickup element supporting unit for supporting the image pickup element, and having a notched portion so that at least one of the plurality of lens barrel members may face the flexible substrate.

Abstract: A lens apparatus is disclosed which allows a reduced overall length when it is put into a barrel body while a high magnification of taken images is realized. The lens apparatus includes a first holding member which holds a first lens unit; a second holding member which holds a second lens unit disposed closer to an image plane side than the first lens unit; a first cam member which has a first cam portion driving the first holding member in an optical axis direction; a second cam member which has a second cam portion driving the first cam member in the optical axis direction; and a third cam member which includes a third cam portion driving the second holding member in the optical axis direction.

Abstract: A lens apparatus is disclosed which allows a reduced overall length when it is put into a barrel body while a high magnification of taken images is realized. The lens apparatus includes a first holding member which holds a first lens unit; a second holding member which holds a second lens unit disposed closer to an image plane side than the first lens unit; a first cam member which has a first cam portion driving the first holding member in an optical axis direction; a second cam member which has a second cam portion driving the first cam member in the optical axis direction; and a third cam member which includes a third cam portion driving the second holding member in the optical axis direction.

Abstract: A lens apparatus is disclosed which can achieve, an optical adjustment with a simple structure having a small number of parts. The lens apparatus has a lens unit, a lens holding member which holds the lens unit, a first holding member which holds the lens holding member, and a second holding member which holds the first holding member.

Abstract: Flexible printed boards are introduced to a camera body respectively through a plurality of slit holes formed in a rotating barrel at different positions in the direction of an optical axis. The outer dimension of the lens barrel is kept from increasing.

Abstract: A lens apparatus is disclosed which can achieve, an optical adjustment with a simple structure having a small number of parts. The lens apparatus has a lens unit, a lens holding member which holds the lens unit, a first holding member which holds the lens holding member, and a second holding member which holds the first holding member.

Abstract: A lens apparatus is disclosed which allows a reduced overall length when it is put into a barrel body while a high magnification of taken images is realized. The lens apparatus includes a first holding member which holds a first lens unit; a second holding member which holds a second lens unit disposed closer to an image plane side than the first lens unit; a first cam member which has a first cam portion driving the first holding member in an optical axis direction; a second cam member which has a second cam portion driving the first cam member in the optical axis direction; and a third cam member which includes a third cam portion driving the second holding member in the optical axis direction.

Abstract: In a camera, at least a part of a wall portion of at least one of a film take-up spool chamber and a film-cartridge loading chamber is formed with a shutter mechanism.

Abstract: A lens barrel comprises a first lens group, a cam tube provided with a cam, a plurality of engagement members arranged to move integrally with the first lens group and engaged with a plurality of cam parts of the cam, and a moving member for moving the cam tube along an optical axis with a rotation of the cam tube, wherein a cam part with which at least one engagement member of the plurality of engagement members is engaged is connected to a cam part with which an engagement member adjacent to the at least one engagement member is engaged.