Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 5515210 | Permanent magnetic suspension with roller guides A lens assembly for positioning on a guide rod 4 has a lens cell 10 and a permanent magnet assembly 12 connected to the lens cell 10. The permanent magnet assembly 12 has a permanent magnet 20 for applying a close-coupled magnetic force on the guide rod 4... | 05/07/1996 |
| 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 |
| 5285322 | Mechanisms for mounting cam barrels A zoom lens includes a lens group mounted in a cam barrel mechanism which includes a fixed barrel with a cam barrel rotationally mounted thereon. The lens group has a pin which projects through an axially extending clearance slot in the fixed barrel and a... | 02/08/1994 |
| 5225938 | Guide apparatus of cam ring A guide apparatus is provided for a rotatable cam ring which has inner cam grooves in which cam pins, which are provided on a movable member and are biased to project in the radial direction of the cam ring, are fitted. The movable member is provided with... | 07/06/1993 |
| 5216549 | Lens barrel A lens barrel comprises a lens, a lens holding member holding the lens and movably supported, and cam arrangement for moving the lens holding member. The cam arrangement has a cam portion projectedly formed on a movable cam member, and a cam follower cont... | 06/01/1993 |
| 5191478 | Zoom lens for video camera A zoom lens for a video camera includes a focusing mechanism which is designed to prevent a picked-up image from shaking when the focusing mechanism is operated manually or electrically. In the focusing mechanism, a female helicoid is threadedly fitted on... | 03/02/1993 |
| 5078503 | Mechanism of eyepiece for endoscope A mechanism of an eyepiece for an endoscope which is designed so that an ocular lens is movable along the optical axis for the purpose of dioptric adjustment and, when an attachment of a photographic recording device or an imaging device is attached to th... | 01/07/1992 |
| 4874233 | Diaphragm control device for interchangeable lens A diaphragm control device for use in an interchangeable lens of a single lens reflex camera. A motor for driving diaphragm blades includes a coil, a rotor, and a stator which are arranged in a diaphragm device comprising a ring-shaped disc with diaphragm... | 10/17/1989 |
| 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 |
| 4834514 | Zoom lens mount assembly The present invention relates to a zoom lens mount assembly for use in optical apparatus such as photographic camera, video camera or the like. The zoom lens mount assembly of this type usually comprises a plurality of frames consisting of a stationary fr... | 05/30/1989 |
| 4787720 | Lens mounting A cam sleeve for axially moving a lens as it rotates about an optical axis is provided with a pair of camming grooves that depict the same locus. And, a holding member for the lens to be guided by a guide member is provided with a pair of pins correspondi... | 11/29/1988 |
| 4781448 | Zoom lens adapter for endoscopic camera An adapter for coupling an endoscope to a camera head. The adapter includes a zoom ring, barrel, focusing ring and chassis. A lens, slidably mounted within the barrel, moves axially within the barrel in response to rotation of the zoom ring thereby varyin... | 11/01/1988 |
| 4759618 | Zoom lens mounting A lens mounting having an actuator drivingly connected to a movable sleeve in which is fitted a stop member for controlling harmful rays of light, whereby a cam for controlling the axial movement of the stop member is provided in each of the movable sleev... | 07/26/1988 |
| 4640579 | Sliding friction member for lens sliding ring A photographing lens device having an improved sliding friction member which restrains sliding movement of a sliding ring such as a lens hood ring or a zooming ring with respect to the mating sleeve in which it is slidably received. The sliding friction m... | 02/03/1987 |
| 4636042 | Mechanical mounting for zoom lens A mechanical mounting for a zoom lens having a tubular body in which is rotatably fitted a cam sleeve for controlling the axial movements of optical elements contributing to a zooming action. In order to keep the axial position of the cam sleeve relative ... | 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 |
| 4610512 | Mounting for zoom lens A mechanical mounting for a zoom lens in which a range of angles of rotation of a focusing actuator and a range of angles of zoom actuator are limited by a common stopper member.... | 09/09/1986 |
| 4605286 | Motor built-in lens mounting A mechanical mounting for a lens system having a component axially movable to perform optical functions. Movement of the component is controlled by a motor in a form of a hollow cylindrical field magnet rotatably fitted in a hollow cylindrical field coil ... | 08/12/1986 |
| 4576446 | Zoom lens mounting A zoom lens mounting with a stop having a prescribed inner diameter to shut off harmful light and arranged in a lens system to move axially in a relation that is differential to the movable lens components for zooming in a region of the zooming range, whe... | 03/18/1986 |
| 4534625 | Lens tube for a high vari-focal ratio zoom lens A lens tube for a high vari-focal ratio zoom lens is arranged to individually effect movement of a plurality of lens groups for the purpose of zooming, and to integrally move a plurality of lens groups of the purpose of focusing, and arranged so that a do... | 08/13/1985 |
| 4461544 | Autofocusing lens mounting Axial movement of a focusing lens holder is controlled by an output signal of automatic distance measuring means for automatically finding the distance from the means to an object. A lens mounting is selectively operable either by the drive control of the... | 07/24/1984 |
| 4458990 | Adjusting mechanism for lens mounting assembly An adjusting mechanism for the mechanical mounting arrangement of a lens assembly operative to enable lens components to be axially adjusted for appropriate positioning during the assembly operation of the device. A guide member is provided for guiding a ... | 07/10/1984 |
| 4448496 | Zoom lens assembly having a mechanical lens system mounting mechanism operative to enable closeup operation A zoom lens assembly having a mechanical mounting system for the lens components thereof wherein zooming, focusing and closeup operations may be selectively performed by operation of a single actuator member. A lens barrel is provided within which a varia... | 05/15/1984 |
| 4397528 | Zoom lens assembly with single operational member and means to prohibit defocussing while zooming In a lens assembly having a single operational member adapted to be manipulated to perform both focusing operation and zooming operation, there is provided a rotation preventing device for inhibiting rotation of the single operation member during axial mo... | 08/09/1983 |
| 4137782 | Apparatus for retracting and extending of a lens holder of a camera Apparatus for the retracting and extending the lens holder of a camera, which comprises two gear wheels or gearwheel segments swingably supported about fixed axes on different sides of the longitudinal central plane of the lens holder, said gear wheels or... | 02/06/1979 |
| 4124275 | Compact varifocal lens assembly A varifocal lens assembly of simplified construction which essentially comprises a lens mounting for focusing adjustment, a second lens mounting and a third lens mounting cooperative with the second lens mounting for adjustment of the focal length and for... | 11/07/1978 |
| 4097124 | Zoom lens This disclosure relates to variable focal lens having zooming and compensating groups movable axially in a non-linear relation. A single operating member is rotatable to move the front focusing group without moving the other groups, and movable axially to... | 06/27/1978 |
| 4076389 | Zoom lens mount and mechanism A mount and mechanism for a symmetrical zoom lens in which the outer lens elements are stationary relative to the lens housing. The inner elements on one side of the center move in unison on one shaft driven in symmetrically opposite direction relative to... | 02/28/1978 |
