Abstract: A zoom lens barrel in which a zoom lens is switched to a plurality of focal lengths by a moving member by which a plurality of lens groups are moved in the direction of optical axis. After a desired focal length has been selected, a focusing operation is conducted by the moving member. At least two lens groups, which are moved for switching focal lengths, are moved while a distance between lens groups is being changed so that the focusing operation can be conducted.

Abstract: A light emission device having therein a light emission tube which is almost straight in shape and emits light in a radial manner and a reflection shade that reflects light emitted from the light emission tube toward an object, wherein the reflection shade has a reflection surface in which light emitted from the light emission tube in the direction opposite to the direction from the center of the light emission tube to an object and reflected on the reflection shade does not interfere with the light emission tube.

Abstract: The present invention concerns a camera incorporating a real-image finder, having a structure more compact than ever. The camera includes an optical system; an erect-image optical system, having a reflecting surface, to receive a light bundle passed through the objective optical system; and an ocular optical system to receive the light bundle reflected from the reflecting surface of the erect-image optical system. In the camera, a rear end of the reflecting surface is located at a backward position with respect to a film conveyance surface and outside the film conveyance surface, and, a front end of the reflecting surface is located at a forward position with respect to the film conveyance surface and inside the film conveyance surface.

Abstract: A variable focal length lens unit, including: the first, the second, and the third lens components which are aligned on the optical axis; the first, the second, and the third guiding members for respectively guiding movements of the first, the second, and the third lens components; a moving mechanism for independently moving the first, the second, and the third lens components in the direction of the optical axis so as to focus the variable focal length lens unit onto an object and zoom the variable focal length lens unit. In the lens unit, all of the first, the second, and the third lens components move in all ranges of the focal lengths, and at least one of the first, the second, and the third lens components moves in the direction by a distance being different from moving distances of other lens components when the variable focal length lens unit is focused onto the object and the variable focal length lens unit is zoomed.

Abstract: A zoom lens barrel in which a zoom lens is switched to a plurality of focal lengths by a moving member by which a plurality of lens groups are moved in the direction of optical axis. After a desired focal length has been selected, a focusing operation is conducted by the moving member. At least two lens groups, which are moved for switching focal lengths, are moved while a distance between lens groups is being changed so that the focusing operation can be conducted.

Abstract: An image pick-up apparatus includes: an image pick-up device for picking up an object image by converting the object image to an electric image signal; an image pick-up optical system having a variable aperture capable of changing an aperture value when an incident light beam on the image pick-up device is stopped down; a range-finder for measuring a distance to an object; an electronic flash mechanism for illuminating the object; and controller for determining an aperture value from the distance to the object measured by the range-finder and from a light emission capability of the electronic flash mechanism, and then for setting the variable aperture to the determined aperture value, when the controller makes the electronic flash mechanism to emit light so that the image pick-up device picks up the object image.

Abstract: A camera for photographing by exposing a silver halide film, includes: a silver halide photographing device having a lens and a shutter wherein a photographing is conducted by exposing the silver halide film through the lens and the shutter; and an electronic viewfinder having a solid-state image sensor and a direct-vision type image displaying section, for displaying an image picked up by the image sensor on the direct-vision type image displaying section. The image displaying section of the electronic viewfinder is disposed on a rear side of a main body of the camera.

Abstract: A zoom lens barrel in which a zoom lens is switched to a plurality of focal lengths by a moving member by which a plurality of lens groups are moved in the direction of optical axis. After a desired focal length has been selected, a focusing operation is conducted by the moving member. At least two lens groups, which are moved for switching focal lengths, are moved while a distance between lens groups is being changed so that the focusing operation can be conducted.

Abstract: In a camera equipped with a zoom lens for forming an image of an object onto a film surface, the camera is equipped with a front lens group composed of a first lens group, adjustable aperture blades, a second lens group, and a second lens group-holding member; a back lens group provided; and an actuator to drive the adjustable aperture blade. The actuator is provided on the object-side from a space between the second lens group and the back lens group.

Abstract: A camera having a zoom lens in which the zoom lens includes: first and second lens components for focusing the light from an object on the focal plane; a lens barrel for guiding movements of the first and the second lens components, in which the lens barrel includes a first guide portion for guiding movement of the first lens component and a second guide portion for guiding movement of the second lens component; and a moving driver for moving the first lens component along the first guide portion and for moving the second lens component along the second guide portion so that the first and the second lens components focus the light on the focal plane at plural focal lengths, and a focal point adjustment, including focusing and focusing compensation, is conducted continuously from the first focal length to the second focal length of the plural focal lengths.

Abstract: A zoom lens barrel in which a zoom lens is switched to a plurality of focal lengths by a moving member by which a plurality of lens groups are moved in the direction of optical axis. After a desired focal length has been selected, a focusing operation is conducted by the moving member. At least two lens groups, which are moved for switching focal lengths, are moved while a distance between lens groups is being changed so that the focusing operation can be conducted.

Abstract: A zoom lens barrel in which a zoom lens is switched to a plurality of focal lengths by a moving member by which a plurality of lens groups are moved in the direction of optical axis. After a desired focal length has been selected, a focusing operation is conducted by the moving member. At least two lens groups, which are moved for switching focal lengths, are moved while a distance between lens groups is being changed so that the focusing operation can be conducted.

Abstract: A camera having a zooming lens barrel. The zooming lens barrel includes: plural lens component; a guide portion for guiding one of the plural lens components along the guide portion in an optical axis direction of the plural lens components in which the guide portion has plural focal distance positions; a driver for moving one of the plural lens components along the guide portion in the optical axis direction; a movement controller for controlling the driver so as to move one of the plural lens components to a predetermined position. The guide portion includes a first area for performing focusing from the first focal distance position, a second area which is not used for focusing, and a third area for performing focusing from the second focal distance position.

Abstract: In a lens barrel for use in a camera, the inner wall of a fixed barrel and the outer wall of a rotatable barrel are shaped in a first helicoid engagement and the inner wall of the rotatable barrel and the outer wall of a lens holding-barrel are shaped in a second helicoid engagement, wherein a pitch of the second helicoid engagement is substantially equal to that of the first helicoid engagement. One end of a flexible print circuit is connected with an electrical device on the lens holding-barrel, the middle portion of it is extended backward between the outer wall of the lens holding-barrel and the inner wall of the rotatable barrel and is turned around the back end of the rotatable barrel so as to be further extended forward between the outer wall of the rotatable barrel and the inner wall of the fixed barrel, and the other end of it is passed a through hole provided on the fixed barrel and is extended to the camera body.

Abstract: The invention provides a camera having a varifocal lens system including first, second, third and fourth lens groups positioned in that order along an optical axis from a subject side. The first and third lens groups are integrally held in a first holding barrel and the fourth lens group is held in a second holding barrel. The second lens group is disposed in the first holding barrel and positioned between the first and third lens groups. The focal length changing device provides the first holding barrel, and the second holding barrel respectively with different movements in the optical axis direction during changing of the focal length.

Abstract: This invention relates to an electronic camera of an electronic lens shutter type including a film rewinding apparatus. The film rewinding apparatus comprises a camera back which openable for mounting or dismounting a film cartridge, an open camera back detection device for detecting the open camera back, a film rewinding device for rewinding a film, a film detection device provided in a film passage to detect a presence of the film, and a film rewind control device which stops rewinding of the film for a time specified by a timer when the film detection device detects that there is no film during the film rewinding, inhibits subsequent rewinding of the film when the open camera back is detected during the specified time, and resumes rewinding of the film when the open camera back is not detected during the specified time and the specified time is over.

Abstract: An auto-focus camera of this invention has a focusing lens supporting feed screw rod supported substantially parallel to the lens optical axis and having a slit for focusing at its one end, and a spacer nut meshed with a feed screw portion of the feed screw rod, so that is longitudinal movement is prevented, and rotated by the focus control motor.