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| Number | Title | Issue Date |
| 5748393 | Mounting arrangement A lens mounting arrangement (10) for, for example, an optical telescope, permits movement of the lens from an initial position to an accurately defined first position. The arrangement comprises a track (16) including a first stop (18) at a first end of th... | 05/05/1998 |
| 5742435 | Video-camera imaging-system zoom lens barrel Disclosed is a video-camera imaging-system lens barrel which overcomes the problem of a four-lens-group-type video-camera imaging-system lens barrel, which has a complicated structure and large size and weight due to the large number of lens groups. In a ... | 04/21/1998 |
| 5742850 | Lens shutter type of camera A lens drive mechanism is disclosed that includes: a shutter block which supports a lens shutter including a plurality of shutter blades; a lens group guided along an optical axis thereof relative to the shutter block; a first motor secured to the shutter... | 04/21/1998 |
| 5737644 | Lens drive mechanism A lens drive mechanism includes first and second members positioned adjacent to each other where the second member supports a lens group and is movable relative to the first member along an optical axis of the lens group, and a first guide shaft extending... | 04/07/1998 |
| 5731919 | Optical apparatus An optical apparatus has an optical lens unit, a manual operation device for manually operating the optical lens unit, and a drive device for driving the optical unit by electrical power, in which the manual operation device and the drive device are coupl... | 03/24/1998 |
| 5731918 | Lens mounting for optical instrument The invention relates to a lens mounting suitable for use in a high performance optical instrument. The mounting (10) comprises a body or housing, a linear guide (16; 18; 36; 46; 64) mounted on the body, a lens carriage (14; 34; 44; 62) moveable along the... | 03/24/1998 |
| 5724194 | Optical apparatus including zooming means focus including a part having a backlash, and correction means for correcting the backlash of the focus apparatus A lens barrel or an optical apparatus includes a first lens arranged to move for varying an image forming magnification, a second lens arranged to move for focusing and for compensating for a change in image forming position resulting from a movement of t... | 03/03/1998 |
| 5715101 | Focusing apparatus for a surveying instrument A focusing apparatus for a surveying instrument including an objective lens, a focusing lens and a reticle. The focusing lens is movable in an optical axis direction, by a rotating shaft member which is rotated by a motor, to form an image, of an object t... | 02/03/1998 |
| 5708872 | Lens barrel with built-in ultrasonic motor, camera having lens barrel and method A lens barrel for a camera includes a photography optical system, an ultrasonic motor, an external manual operation member and a conversion device. The ultrasonic motor includes a vibrating member that generates ultrasonic vibrations and a relative moving... | 01/13/1998 |
| 5708535 | Lens mirror cylinder having two movable lenses and a diaphragm unit A lens mirror cylinder having first and second movable lens structures, constructed by assembling in a mirror cylinder a plurality of magnetic circuit means arranged on the outer periphery side of the second movable lens structure, guided so that it can m... | 01/13/1998 |
| 5701208 | Clutch apparatus for zoom lens barrel A driving apparatus for a zoom lens barrel has a driving ring for moving a lens system and a mechanism for movably supporting the driving ring for movement along an optical axis of the lens system. A gear train is supported by the supporting mechanism, a ... | 12/23/1997 |
| 5701209 | Lens barrel having a manually focusing ring A lens barrel has a manual focusing ring which is rotatable about the optical axis so as to attain a manual focusing operation, a focusing rotary cylinder which defines the position, in the optical axis direction, of a focusing optical system, and is rota... | 12/23/1997 |
| 5699199 | Zoom lens with hindering device A zoom lens is comprised of a fixed barrel, an intermediate barrel coupled to the fixed barrel through helicoid screws, a movable barrel coupled to the intermediate barrel through helicoid screws, a front lens group fixedly held in the movable barrel, and... | 12/16/1997 |
| 5696634 | Objective lens for image pickup apparatus with size of image pickup surface changeable between aspect ratios An objective lens for application to an image apparatus of which the size of the image pickup surface is changeable over between a first mode of a first aspect ratio and a second mode of a second aspect ratio has first optical member for extending the foc... | 12/09/1997 |
| 5691854 | Zoom lens with differential focal compensation for visible, IR, and UV light To use a zoom lens mechanism in visible light, a switch is turned off. By force of a spring, a cam pin of a correction lens is contacted with a first edge of a cam groove which is formed to have a shape which corrects a focal inadequacy resulting from a m... | 11/25/1997 |
| 5675441 | Focusing lens control apparatus with automatic and manual focus adjustment modes A lens control apparatus has an electric motor connected to a focusing lens to drive the focusing lens, an automatic focus adjustment device which supplies electrical power to the motor to operate the motor electrically to drive the focusing lens in an au... | 10/07/1997 |
| 5663842 | Surface wave motor built-in lens barrel A surface wave motor built-in lens barrel has a manual focus adjusting mode and an autofocus adjusting mode. The lens barrel comprises a photographing optical system, a fixed drum, a surface wave motor so fitted to the fixed drum as to be rotatable about ... | 09/02/1997 |
| 5631776 | Zoom lens apparatus and bearing block assembly A zoom lens apparatus having a first pair of substantially parallel guide rods. A pair of carriage assemblies are mounted to the first pair of parallel guide rods each having lens element. A pair of lead screws are provided for driving the carriage assemb... | 05/20/1997 |
| 5602681 | Lens barrel for a video camera, and linear feeding system thereof A linear feeding system comprises a DC motor with brush, a lead screw integrally arranged as the rotational shaft of the DC motor, and a nut member screwed on the lead screw. This linear feeding system further comprises a magnet installed on the rotationa... | 02/11/1997 |
| 5592335 | Reduced diameter camera lens barrel with lens shift device and improved focus lens drive linkage A camera lens barrel for a camera includes first, second, third and fourth lens groups with a diaphragm located between the second and third lens groups. The second and third lens groups are connected, while the first, third and fourth lens groups can mov... | 01/07/1997 |
| 5586818 | Three dimensional projection system Disclosed is a three dimensional projection system. A holder housing has upper and lower plates and a plurality of longitudinally inclined guiding holes inclined at predetermined angles about central axes of the upper and lower plates. First and second pr... | 12/24/1996 |
| 5576892 | Variable power optical system 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... | 11/19/1996 |
| 5576894 | Zoom lens barrel based on the vari-focal optical system A zoom lens barrel based on the vari-focal optical system includes a zoom cam ring which is supported only rotatably about the optical axis and a focus cam ring which is supported movably only in the axial direction both fitted on a fixed tube inside a le... | 11/19/1996 |
| 5572373 | Photographing lens switchable between manual-focus and auto-focus modes A lens bodytube has an auto-focusing mode in which a photographing lens is automatically driven to an in-focus position by a drive force of a motor and a manual focusing mode in which the photographing lens is driven to the in-focus position by manually r... | 11/05/1996 |
| 5561561 | Lens barrel having grooves with fitted covering A lens barrel has a fixed barrel portion including therein a focusing optical system movable in the direction of the optical axis thereof to perform the focusing operation, and having a groove portion for electric wiring on the outer peripheral portion th... | 10/01/1996 |
| 5546238 | Zoom lens having high speed multi-lens drive A high speed zoom lens arrangement (2) including a plurality of lens elements (4,5), each being disposed along a common optical path (3). The zoom arrangement has a single optical drive (40) and piezoelectric clamps (10, 11, 20, 21), associated with each ... | 08/13/1996 |
| 5546233 | Lens barrel using a surface wave motor A lens barrel comprises a fixed barrel; a photographing lens which requires a first torque for driving the lens along the fixed barrel; and a surface wave motor including a fixed body and a moving body which is rotated relative to the fixed body by excita... | 08/13/1996 |
| 5543971 | Backlash removing device for stowed lens barrel A backlash removing device for a lens barrel, including a plurality of lens groups movable in an optical axis direction and cylindrical members movable in the optical axis direction by a motor for moving the plurality of lens groups. A motion converting m... | 08/06/1996 |
| 5541777 | Electromagnetic driving device According to the electromagnetic driving device of the present invention, since it has a fixed member having an outside yoke and an inside yoke, a magnet for generating the thrust being bonded on either side of the outside yoke or inside yoke, and a movab... | 07/30/1996 |
| 5532883 | Lens barrel having suppressed load torque and moment of inertia A lens barrel having a focusing optical system, a rotatable moving member for moving the focusing optical system for the focusing operation, an rotatable operating mechanism for driving the moving member for focusing, a biasing member for giving a frictio... | 07/02/1996 |
| 5519465 | Camera lens barrel having both pulse drive control and microstep drive control A camera lens barrel having a first grouped lens, a movable second grouped lens for variable magnification, a third grouped lens, and a fourth grouped lens, which are respectively arranged along an optical axis, and accommodating a drive system for the fi... | 05/21/1996 |
| 5517364 | Drive device, lens barrel and camera In a drive device having a drive unit which is mounted on a body of the drive device, a rotary scale such as a pulse disc which is disposed at the drive unit and a light-emitting element and a light-receiving element which are arranged on a circuit board ... | 05/14/1996 |
| 5495309 | Camera A camera has a two lens group zoom system composed of a front lens group and a rear lens group, and a home position check apparatus of the rear lens group driven by a stepping motor. The home position check apparatus is so arranged that a detection as to ... | 02/27/1996 |
| 5453879 | Lens barrel with biasing member positioned between two annular members A lens barrel is provided having a lens system, and two annular members that are engaged and rotatable relative to one another, with one of the annular members being arranged inside of the other. A lens group is connected to one of the two annular members... | 09/26/1995 |
| 5453807 | Lens with moveable diaphragm A lens barrel includes a moving lens arranged to be movable around an optical axis as well as in the direction of the optical axis, an electrically-driven diaphragm device arranged to move around the optical axis as well as in the direction of the optical... | 09/26/1995 |
| 5392159 | Zoom lens device of two-lens group structure and driving device of varifocal lens of two-lens group structure In a zoom lens device of a two-lens group structure, positive and negative lens groups are sequentially arranged from a photographing field side. The zoom lens device has a controller for controlling a rear focusing operation for moving the negative lens ... | 02/21/1995 |
| 5391866 | Position recovery apparatus for inner focus lens A feed screw (3) is coupled to a stepping motor (2) and a moving member (4) is provided along the feed screw (3). The moving member (4) includes a rack (7) that is meshed with the feed screw (3). The moving member (4) has a lens supporting member (9) secu... | 02/21/1995 |
| 5377048 | Lens barrel A lens barrel is composed of a shaft located in a lens barrel parallel to the optical axis thereof, a movable lens frame installed in the lens barrel having a bearing to receive the shaft and holding a lens therein to be moved therewith along the directio... | 12/27/1994 |
| 5367406 | Optical device with inherent focusing error correction In an imaging apparatus, provided is an optical device which is capable of changing the magnifying power thereof. The optical device includes a zoom lens system having a power varying lens group and a correction lens group both of which are movable in the... | 11/22/1994 |
| 5339194 | Power zoom optical unit with encoder There is disclosed an optical unit which is primarily intended to provide visual references for measuring machines such as coordinate measuring machines, milling machines, EDM machines, tape and computer controlled drilling machines, etc. The optical unit... | 08/16/1994 |
