| Patent Number |
Title Of Patent |
Date Issued |
| 7423822 |
Lens barrel and optical apparatus |
September 9, 2008 |
| The present invention is directed to a lens barrel that is simplified in structure with the reduced number of components and is facilitated in assembly and associated adjustment. The lens barrel enables an appropriate frictional force against the rotation force caused by manipulating |
| 7379244 |
Anti-reflection film |
May 27, 2008 |
| The present invention is dedicated to a cost reduced anti-reflection film of a multi-lamination structure that is reduced in number of layers and increased in thickness of the same for the purpose of facilitating the total control of the film thickness and that can be manufactured in a |
| 7321471 |
Lens barrel and lens system |
January 22, 2008 |
| The invention is directed to a lens barrel and a compact lens system incorporating the lens barrel where notches defined in a cam barrel to serve as bolt holes and disengage the studs are reduced in dimensions both along and around the optical axis, thereby ensuring enlarged cam form |
| 7286303 |
Macro lens |
October 23, 2007 |
| The invention discloses a macro lens that takes a retrofocusing function for the purpose of downsizing. The macro lens employs a floating mechanism to cover a wide photographing range from the equi-magnification to the infinity, and especially, attains a great imaging performance by |
| 7177090 |
Telecentric zoom lens |
February 13, 2007 |
| The present invention is directed to provide a telecentric zoom lens capable of attaining a small numerical aperture, a wide angle of view, reduced distortion, high resolution, reduced chromatic aberration, small aperture, and yet avoiding a cost increase and also to provide the tele |
| 7101049 |
Projector optics and projector with light source of LEDs |
September 5, 2006 |
| The invention is directed to downsized projector optics and projector both of which employ an LED light source attaining the enhanced efficiency of the quantity of the emitted light. The projector optics and the projector respectively include, in position, a polygon-based conical polyhed |
| 7092171 |
Lens barrel with lock mechanism |
August 15, 2006 |
| A lens barrel with a lock arranged to avoid loosening the lock and defocusing the lens barrel when vibrated during focusing and zooming. The lens barrel includes a fixed cylinder, an adjustment ring, lock screws and a lock ring, lock screws and a lock ring. The adjustment ring is sli |
| 7075731 |
Large aperture zoom lens |
July 11, 2006 |
| The invention is directed to a large aperture zoom lens of the improved optical performance, serving as a standard zoom lens especially suitable to a single-lens reflex camera. The zoom lens employs a zooming system with four groups of lenses having positive, negative, positive and p |
| 7009779 |
Macro lens |
March 7, 2006 |
| A macro lens comprised of a front lens group of a retrofocus type and a rear lens group of which component lenses are aligned in the order from the closest to the subject. The front lens group includes a first lens of a negative meniscus lens having its convex surface projecting toward t |
| 6984078 |
Aperture diaphragm, imaging device, and method of manufacturing the aperture diaphragm |
January 10, 2006 |
| Diaphragm blades move in a direction approaching to or separated from an optical axis of an incident light at the time of operation. Opening edges of the diaphragm blades are provided with neutral density (ND) filters having a predetermined transmittance to pass the incident light. Edges |
| 6949999 |
Apparatus for holding a stable condition at two positions and a lens apparatus |
September 27, 2005 |
| An apparatus for holding a stable condition at two positions comprising a driving magnet 130 having driving magnetic poles and adapted to be movable in two directions; a driven magnet 140 having driven magnetic poles arranged to be always repulsed by the driving magnetic poles and adapte |
| 6924946 |
Lens diaphragm device, video camera incorporated with the same, and lens for the video camera |
August 2, 2005 |
| The present invention is directed to a lens diaphragm device that can avoid a degradation of an image due to both diffraction of a light beam and flares. The diaphragm device includes two diaphragm vanes (2 and 4) that respectively have notches (28 and 36) opposed to each other in a sing |
| 6912095 |
Projection lens system |
June 28, 2005 |
| A compact and light-weighted projection lens system that is capable of projecting an image at an angle as wide as 75 degrees with sufficient field angle and brightness as represented by F number of approximately 2.4, that is capable of effectively correcting chroic aberration of magn |
| 6839512 |
Camera device having posterior filter |
January 4, 2005 |
| The present invention is directed to a camera device having a posterior filter which is of compact design and facilitates attachment and detachment of optical elements such as a posterior filter. The camera device comprises a fixed lens barrel having its inner surface formed with a f |
| 6822804 |
Projection lens and liquid crystal projector |
November 23, 2004 |
| The present invention is directed to a projection lens that has a sufficiently long back focus to enable a wide-angle projection and has astigmatism, abaxial spherical aberration (coma), distortion, and other types of aberration satisfactorily corrected. The projection lens includes |
| 6791762 |
High zoom ratio lens |
September 14, 2004 |
| The invention is dedicated to a compact and lightweight high zoom ratio lens which is configured in 4 lens group zoom system with a deployment of positive, negative, positive, and positive refraction lens groups in order, being approximately 75 degree in shooting angle of view at a w |
| 6754011 |
High zoom ratio lens |
June 22, 2004 |
| A high zoom ratio lens with a reduced number of barrel components or elements of a telescopic barrel having a light-weight outermost diameter. The zoom lens comprises first to fourth groups of lenses, a fixed barrel, a first cam barrel inside the fixed barrel, a linear barrel inside the |
| 6714358 |
Lens barrel, and cam barrel molding die |
March 30, 2004 |
| A lens barrel having a cam barrel is disclosed. The cam barrel is molded by die-cutting in radial and other directions relative to the optical axis so as to have raised cams without undercuts if the raised cams are even partially lined up fore and behind one another along the optical axi |
| 6591065 |
Single-lens reflex camera having a focusing detection sensor capable of calibrating, and a viewf |
July 8, 2003 |
| A focusing detection sensor is positioned in a viewfinder in a single-lens reflex camera but is nevertheless able to determine a focal point on an image of an object with enhanced accuracy. For that purpose, a single-lens reflex camera includes a camera body having a focusing plate with |
| 6580566 |
Zoom lens and zoom lens barrel |
June 17, 2003 |
| A zoom lens and zoom lens barrel superior in precision and excellent in manipulability is disclosed, and they have a feature of combination of plastic cam barrel that retains a high dimensional precision and brings about decrease in a manufacturing cost, with the reduced number of co |
| 6567221 |
High zoom ratio lens device having focus and zoom cams |
May 20, 2003 |
| The invention is directed to provide a high zoom ratio lens that can be configured to be efficiently downsized and to effectively attain sufficient compensation rate for focusing a lens component in any type of zoom ranges. The high zoom ratio lens comprises a focusing lens (B) that |
| 6437923 |
High zoom ratio lens |
August 20, 2002 |
| The present invention is directed to a compact and lightweight high magnification zoom lens utilizing a 4-element zoom layout of positive, negative, positive, and positive in refractive property, which is approximately 75 degrees in shooting angle of view at a wide-angle end, approxi |
| 5646466 |
Actuating apparatus and actuator |
July 8, 1997 |
| First and second stationary driving coils are disposed about drive shaft means on which magnetized rotor means are mounted so as to exert on the drive shaft means output torques 90 degrees out of phase with each other. Coupling means connect the drive shaft means to an output shaft so as |
