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| Number | Title | Issue Date |
| 5335115 | Lens barrel 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... | 08/02/1994 |
| 5313329 | Lens hood assembly for zoom lens A lens hood assembly is provided for use with a zoom lens having a group of variable power lenses for varying focal length, the assembly comprising a lens hood which is adapted to be moved along the optical axis direction of the zoom lens and which is pro... | 05/17/1994 |
| 5293268 | Autofocus lens barrel An autofocus lens barrel has an optical system shifter for shifting a focusing optical system forward and backward in the direction of the optical axis, a driven pulley rotatively driven around the optical axis for actuating the optical system shifter, an... | 03/08/1994 |
| 5291335 | Optical equipment having a lens position detector An optical equipment is equipped with a compact and high precision lens position detector which has a lens holder guide member which is made of a conductor and is provided with a detection electrode for detecting the position of the lens holder by a chang... | 03/01/1994 |
| 5282090 | Electrically driven zoom lens barrel An electrically driven zoom lens barrel is provided with an indicating plate for indicating whether a zooming operation is being carried out in an electric mode or in a manual mode. The indicating plate is provided separately from a zooming operation ring... | 01/25/1994 |
| 5272567 | Lens barrel having reference shafts movably supporting lenses A camera lens barrel having a housing which includes front and rear housing members. The lens barrel also includes driving power sources mounted within the lens barrel housing, and reference shafts which are supported in the lens barrel housing and extend... | 12/21/1993 |
| 5264966 | Lens barrel A lens barrel of simplified structure including a focusing member supported rotatably about the optical axis and having a gear portion, a lens support member moved in the axial direction in response to the rotation of the focusing member about the optical... | 11/23/1993 |
| 5231473 | Lens barrel A lens barrel of a camera includes a driving power source, a plurality of lenses mounted in the barrel, and a plurality of reference shafts extending parallel to an optical axis. At least one of the reference shafts is provided with a threaded portion and... | 07/27/1993 |
| 5223981 | Lens position control device An optical apparatus comprises a first lens arranged to be movable along an optical axis for a power varying action; a second lens arranged to be movable also along the optical axis for focusing and also for compensation during the power varying action, p... | 06/29/1993 |
| 5200860 | Lens position control device A lens position control device for a lens system, including a variator and a compensator which also serves as the focusing lens, comprises a detecting circuit for detecting positions of the variator and the compensator, a memory circuit for storing a plur... | 04/06/1993 |
| 5198932 | Zoom lens assembly A zoom lens assembly has a stationary barrel, a middle barrel and a movable barrel. The middle barrel is formed on its outer periphery at a rear end thereof with a helicoidal thread, which engages with a helicoidal thread formed on the inner surface of th... | 03/30/1993 |
| 5164860 | Electrically driven zoom lens barrel An electrically driven zoom lens barrel is provided with an indicating plate for indicating whether a zooming operation is being carried out in an electric mode or a manual mode. The indicating plate is provided separately from a zooming operation ring, w... | 11/17/1992 |
| 5159370 | Powered zoom device A powered zoom device for a camera includes a lens having a variable magnification lens group that is adapted to be changed in a focal length in response to a displacement thereof in a direction along an optical axis. A magnification lens group is driven.... | 10/27/1992 |
| 5150260 | Optical apparatus An optical apparatus comprises a lens holding member holding a lens, a guide member for guiding the movement of the lens holding member in the direction of the optical axis, a gear shaft rotatable by a drive source, and a moving member having a gear porti... | 09/22/1992 |
| 5140467 | Zooming monocular or binoculars A zooming monocular or zooming binoculars having an objective optical system and an eyepiece optical system, which includes at least one variable power lens group driven in the optical axis in the eyepiece optical system, a movable field stop which is pro... | 08/18/1992 |
| 5140468 | Zoom lens device A zoom lens device capable of performing magnification varying and focusing operations by moving part of an optical system. Magnification varying and focusing lens groups guided movably in an optical axis direction by two or more parallel guide shafts. On... | 08/18/1992 |
| 5138355 | Aperture and focus adjusting device for a camera An aperture and focus adjusting device for a camera is provided with only one reversible motor, a first adjusting mechanism, and a second adjusting mechanism. The first adjusting mechanism is rotated by a first member which is connected to the motor, and ... | 08/11/1992 |
| 5067794 | IR-pancratic optical device The invention is directed to an IR-pancratic optical device which includes a drive for displacing optical members thereof. The drive permits the focal length range to be passed through in 0.5 second. The drive includes a rotatably mounted drum on which a ... | 11/26/1991 |
| 5029992 | Motor-controlled lens system A stage light projector including an electronically controlled lens system capable of independently positioning two lenses of a triplet lens system to focus light from different selected back focal plane distances to project images having different select... | 07/09/1991 |
| 5029991 | Lens barrel In a lens barrel having an electromechanical transducer for driving an iris mechanism, a zooming motor for driving a zoom mechanism and focusing motor for driving a focusing mechanism, at least one of the zooming motor and the focusing motor is arranged t... | 07/09/1991 |
| 5016993 | Zoom mechanism for zoom lenses A zoom mechanism for zoom lenses drives a focusing lens group in a linear manner and lens groups other than the focusing lens group in either a non-linear or a linear manner, during a zooming operation and, after the zooming operation, drives the focusing... | 05/21/1991 |
| 4976523 | Method of zooming in a camera and device for use in such method A zoom lens is disclosed which comprises a front lens group for collecting light as a first group, a magnification varying lens group for varying the magnification of an image as a second group, a compensator lens group for correcting defocussing and perf... | 12/11/1990 |
| 4974948 | Optical device for varying magification An optical device for varying magnification, having an object plane on which an object is to be located, a light receiving surface, and an imaging lens unit for focusing an image of the object located on the object plane onto the light receiving surface, ... | 12/04/1990 |
| 4952041 | Scope with powered zoom A powered-zoom rifle scope is disclosed. The scope includes a body tube with an eyepiece mounted at an ocular end and an objective lens mounted at an objective end. A cylindrical zoom lens assembly is mounted at the objective end of the body tube and opti... | 08/28/1990 |
| 4950061 | Drive device for a varifocal lens system A device for driving a varifocal lens, includes a first group frame supporting the first group of lenses therein in a movable manner for focussing and supported with the lens barrel inside said fixed frame movably in parallel with said optical axis, a sec... | 08/21/1990 |
| 4936664 | Zoom lens drive system for camera A zoom lens for a camera having a between-the-lens shutter includes a motor for moving the lens along an optical axis in forward and rearward directions. A switch is operable by an operator to control operation of the motor for moving the lens from an ini... | 06/26/1990 |
| 4896951 | Lens mount assembly The present invention relates to a lens mount assembly for use in photographic camera, video camera and other various optical instruments. Usually, electric drive units for focussing and zooming, respectively, are gear-coupled to such lens mount assembly ... | 01/30/1990 |
| 4865432 | Lens mounting A built-in motorized lens mounting includes a fixed tube, a zoom actuating ring axially movably supported relative to the fixed tube, a focusing lens holder movably supported at least in the axial direction relative to the zoom actuating ring, an electric... | 09/12/1989 |
| 4864337 | Apparatus for driving a moving mirror cylinder of a camera An apparatus for driving a moving lens barrel of a camera with a motor, the barrel supporting a photographing lens unit and retained mechanically and slidably with a camera body between a first setting position located in a forward direction of an optical... | 09/05/1989 |
| 4848884 | Variable focusing lens barrel A variable focus lens barrel in which a variable power drive frame has a plurality of cam grooves which each receive a cam pin provided on each of movable frames to which a lens group is each fixed, the variable power drive frame being driven by a motor t... | 07/18/1989 |
| 4828360 | Drive motor for camera lens assembly The coils of the stepping motor are disposed on the outer periphery of stepped section of a stationary tube section of the lens assembly in a manner to define a stator yoke. The inner surface of the stepped section is provided with a helicoid gear which c... | 05/09/1989 |
| 4824207 | Lens barrel A lens barrel having a fixed outer tube, a distance scale window formed in the outer peripheral surface of the fixed outer tube, a focusing ring which is disposed inside of the fixed outer tube and which is capable of moving in the direction of the optica... | 04/25/1989 |
| 4793689 | Lens barrel with vibration wave motor A lens barrel includes a hollow rotary ring rotatable about the optic axis which is disposed within the hollow of a hollow fixed cylinder with a bearing interposed therebetween, a moving cylinder movable in response to rotation of the rotary ring which is... | 12/27/1988 |
| 4785210 | Linear motor The present invention is concerned with a linear motor adapted to produce a thrust in a linear direction, wherein the magnetic fluxes produced by coils of a stationary part are passed through a closed magnetic circuit including a gap of a movable part for... | 11/15/1988 |
| 4749269 | Lens drive device A lens drive device of the invention is disclosed comprising a motor drive for each lens of zoom means and focusing means, whereby a motor is made to have a concentric layer structure about a photographic optical axis, and a single magnetic circuit for th... | 06/07/1988 |
| 4697891 | Focal length variable lens apparatus The present invention discloses a focal length variable lens apparatus in which a focal length variable lens system has a magnification varying system which, upon movement causes variation of the focal length of the entire system and a compensating system... | 10/06/1987 |
| 4682854 | Lens barrel incorporating a motor There is disclosed a lens barrel incorporating a motor comprising a permanent magnet, a hollow cylindrical coil and a hollow yoke member arranged in the stated order or in an inverted order inside a fixed tube of the lens barrel, wherein a commutator is p... | 07/28/1987 |
| 4676605 | Construction of lens barrel operated by electromagnetic induction A lens assembly including an adjusting mechanism arranged to render a part or parts of or all of the optical elements, constituting an optical system, movable by an electric motor drive arrangement, the lens barrel is composed of a stator or stators of on... | 06/30/1987 |
| 4636041 | Aperture device for zoom lens The aperture of a zoom lens is varied automatically during zooming by an aperture drive device that includes a pair of drive members rotatable about the optical axis. Each drive member has an arm member that engages a coupling member on a rocking member p... | 01/13/1987 |
| 4626077 | Lens mount with built-in motor A mechanical mounting for a lens system having a focusing or a zoom component. A motor for driving a lens holder for the component includes a field coil of hollow cylindrical shape drivingly connected to the lens holder for the component and rotatably fit... | 12/02/1986 |
