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| Number | Title | Issue Date |
| 8167508 | Light amount adjusting device and image capture apparatus A light amount adjusting device includes: a cover plate having a light-passing hole; a first separator being sheet-shaped and having a hole; a second separator being elastically deformable and sheet-shaped, positioned on a side opposite to the cover plate with the f... | 05/01/2012 |
| 8038357 | Diaphragm unit, lens barrel, and imaging apparatus A diaphragm unit includes: a plate-like base member having an optical path hole formed therein; diaphragm blades overlapping with each other in an optical axis direction of an optical system, being supported by the base member so as to be movable in directions in wh... | 10/18/2011 |
| 7942592 | Camera diaphragm device A camera diaphragm device in which two diaphragm blades, that is, first and second diaphragm blades having respective first and second diaphragm aperture portions whose diameters differ from each other is provided. The diaphragm blades are mounted to blade mounting ... | 05/17/2011 |
| 7922404 | Diaphragm unit, light intensity adjusting device, lens barrel, and imaging apparatus A diaphragm unit includes: a pair of straight-moving diaphragm blades and a pair of swing diaphragm blades overlapping with each other in an optical axis direction of an optical system and forming a diaphragm opening centered on the optical axis by moving in directi... | 04/12/2011 |
| 7918617 | Vane driving device using a blade as a gear rotation stopping means A vane driving device includes: a board having an opening; a blade changing an area of the opening, having a cam slot, and being elastically deformable; and a drive member transmitting a drive force from a drive source to the blade, and having a drive pin engaging t... | 04/05/2011 |
| 7891891 | Blade drive device and optical device A blade drive device includes: a board having an opening; a blade for adjusting an amount of the opening; and first and second drive rings having a support structure for commonly supporting the blade for swinging, rotating in an identical direction with a given spee... | 02/22/2011 |
| 7878721 | Light amount adjuster, lens barrel, and image pickup device A light amount adjuster for adjusting a size of a diaphragm aperture on an optical axis of an optical system, includes: a pair of straight moving diaphragm blades so provided at a portion to which the diaphragm aperture is opposed as to slide along a plane orthogona... | 02/01/2011 |
| 7854557 | Vane driving device A vane driving device includes: two boards each having an opening and defining a blade chamber therebetween; a blade changing an area of the opening and housed in the blade chamber; a drive source for driving the blade, the drive source including: a coil winded arou... | 12/21/2010 |
| 7850375 | Light quantity adjusting apparatus, image pickup apparatus and optical apparatus At least one exemplary embodiment is directed to a light quantity adjusting apparatus that can include a first blade member configured to be driven by a drive source, such as a motor, and a second blade member whose movement is configured to be related to the moveme... | 12/14/2010 |
| 7832950 | Iris diaphragm mechanism A fixed aperture and a fixed shaft are formed in a fixed member. A drive shaft is formed in a driving member. A fixed shaft hole and a drive shaft hole are formed in a plurality of diaphragm blades, and the plurality of blades is connected to the fixed shaft and the... | 11/16/2010 |
| 7708480 | Focal plane shutter for digital cameras A focal plane shutter for digital cameras includes a first driving member for a first blade and a second driving member for the first blade, mounted to the same shaft; arms for the first blade on which a set spring is hooked; and a set member for restraining the fir... | 05/04/2010 |
| 7699546 | Light amount adjusting device and image capture apparatus A light amount adjusting device includes: a cover plate having a light-passing hole; a first separator being sheet-shaped and having a hole; a second separator being elastically deformable and sheet-shaped, positioned on a side opposite to the cover plate with the f... | 04/20/2010 |
| 7559709 | Iris diaphragm device, diaphragm driving device and camera unit including the same, and diaphragm control method An iris diaphragm device has at least one lens shutter for adjusting the size of an aperture through which incident light passes. At least one ND filter is installed to move independently of the lens shutter, and reduces the amount of incident light by covering the ... | 07/14/2009 |
| 7553094 | Light quantity adjusting apparatus, image pickup apparatus and optical apparatus At least one exemplary embodiment is directed to a light quantity adjusting apparatus that can include a first blade member configured to be driven by a drive source, such as a motor, and a second blade member whose movement is configured to be related to the moveme... | 06/30/2009 |
| 7338174 | Shutter device and projection type video display Each shading plate comprises a rotating shaft and a driving shaft arranged vertically. First divided shading plate is loosely fitted to and supported by (not adhere to) the rotating shaft and rotates around the shaft. Second divided shading plates are fixed to the r... | 03/04/2008 |
| 7210795 | Light quantity adjusting device and projector apparatus using the same A light quantity adjusting device for adjusting light quantity of a projector apparatus. The adjusting device includes a substrate having an optical path opening and a blade guide surface having level differences in a direction perpendicular to the optical path; a p... | 05/01/2007 |
| 7166386 | Separator for fuel cell and method for preparation thereof Gold is coated on a surface of a stainless steel plate containing an intermetallic compound forming element which forms an intermetallic compound by reacting with gold, and then the entirety is heated to form an intermetallic compound layer comprising the intermetal... | 01/23/2007 |
| 7157706 | Cryogenically cooled adjustable apertures for infrared cameras A continuously variable diaphragm or swappable fixed aperture for use in thermal infrared cameras, which aperture or diaphragm can be cooled to cryogenic temperatures. The invention contemplates mounting aperture control means, if necessary, in a vacuum or extending... | 01/02/2007 |
| 7126766 | Optical stop apparatus and exposure apparatus having the same An optical stop unit includes plural light blocking plates, and a cam mechanism for driving the plural light blocking plates to vary an aperture diameter, the cam mechanism including a cam follower and a cam groove, wherein the cam follower and cam groove have mutua... | 10/24/2006 |
| 7110618 | Digital image analysis of reflecting markers The subject of the invention is a system for photogrammetric determination of centers of gravity of signal markers in moving objects. For reduction of the herein produced image data prior to the actual image measurement in a computer, patterns of adjacent pixels acr... | 09/19/2006 |
| 7085032 | Light regulator and image pickup system A light regulator includes a substrate having an optical aperture, an even number of blade members (six or more) arranged substantially uniformly around the optical aperture, and spindles provided on the substrate for freely rotatably supporting base end portions of... | 08/01/2006 |
| 6984078 | Aperture diaphragm, imaging device, and method of manufacturing the aperture diaphragm 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... | 01/10/2006 |
| 6924946 | Lens diaphragm device, video camera incorporated with the same, and lens for the video camera 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 ... | 08/02/2005 |
| 6912097 | Iris diaphragm An iris diaphragm comprising an annular base, an annular rotatable element and a number of leaves which can be mounted to form a variable aperture, each leaf extending between the base and element and being connected thereto in a pivotal relationship, is characteris... | 06/28/2005 |
| 6872013 | Iris with integrated drive motor An iris includes a stator assembly having a frame coupled to an electrically wound, substantially annular magnetic core. The iris further includes a rotor, which is rotatably coupled to the magnetic core such that a channel is defined. A diaphragm, having a pluralit... | 03/29/2005 |
| 6752542 | Lens shutter mechanism A lens shutter mechanism includes a support frame having a photographing aperture; at least three shutter sectors which open and close the photographing aperture via rotating axes which extend parallel to the optical axis; and at least three diaphragm sectors which ... | 06/22/2004 |
| 6714362 | Lens shutter mechanism A lens shutter mechanism includes, between front and rear support frames having photographing apertures, shutter sectors which open and close the photographing apertures; a shutter drive ring which is rotatable about the optical axis to drive the shutter sectors; di... | 03/30/2004 |
| 6466380 | Iris diaphragm An iris diaphragm, in particular for an exposure lens in semiconductor lithography, is provided with a diaphragm base (2) and a grooved ring (1) which can be rotated relative to one another, having a multiplicity of leaves (4) which in each case are mount... | 10/15/2002 |
| 6442343 | Exposure control device for camera A first stop plate with a small stop opening is disposed behind a taking lens, and a second stop plate with a middle stop opening is disposed between a first and second lens, which comprise the taking lens. Upon moving a changeover knob to an ON position,... | 08/27/2002 |
| 6161966 | Multi-blade lens-aperture control mechanism A lens-aperture control mechanism is provided for use in a lens unit to control the aperture of the lens unit. The lens-aperture control mechanism includes a plurality of blades, each being movable radially inward into the lens barrel and outward from the... | 12/19/2000 |
| 5997187 | Shutter/diaphragm apparatus A shutter/diaphragm apparatus includes an intermediate plate between a diaphragm cam plate and a diaphragm rotating plate. A plurality of blades are provided between the diaphragm cam plate and the intermediate plate and between the diaphragm rotating pla... | 12/07/1999 |
| 5926663 | Rotation driving device and optical apparatus having the same A rotation driving device comprises a first fixed member having an aperture, a second fixed member having an aperture, the second fixed member being fixed with respect to the first fixed member, a ring-like rotary member, the rotary member being fitted in... | 07/20/1999 |
| 5923913 | Iris diaphragm An iris diaphragm comprises a stationary circular base having a pair of opposite sides and pivot pins at only one of the sides, a plurality of opaque blades positioned adjacent the side of the circular base that has the pivot pins to define an aperture be... | 07/13/1999 |
| 5809357 | Aperture system An aperture system includes aperture blades defining an aperture opening and an aperture mechanism for moving the aperture blades, both of which are provided in a barrel. The aperture system further includes a motor, for driving the aperture mechanism, su... | 09/15/1998 |
| 5749015 | Light-quantity control device with spring control of light control member A light-quantity control device having a light-quantity control member which moves to change an aperture opening amount. A drive source swings the light-quantity control member in one direction and a spring having a coil part urges the light-quantity cont... | 05/05/1998 |
| 5687417 | Electromagnetic actuator for providing a hard stop for moving blade aperture systems An hard stop for use with an aperture mechanism includes at least one blade moveable along a path between a closed position and at least one open position. At least one hard stop piston is moveable between a first position, out of the blade path, and a se... | 11/11/1997 |
| 5646769 | Light-quantity control device A light-quantity control device includes a drive source, a light-quantity control member which is arranged to vary the amount of opening of an aperture by shifting its position, and a speed control part which is arranged to control the driving speed of th... | 07/08/1997 |
| 5646770 | Light-quantity control device A light-quantity control device includes a drive source, a light-quantity control member which is arranged to vary the amount of opening of an aperture by shifting its position, and a speed control part which is arranged to control the driving speed of th... | 07/08/1997 |
| 5594519 | Blade mechanism A blade mechanism includes a driving ring. At least two blades each have a pivot, a driving pin and an opening. The pivot of one blade is placed between the pivot and the driving pin of the other blade. The blades are rotated around the pivots by the driv... | 01/14/1997 |
| 5589906 | Aperture device for a camera A light-controlling variable aperture incorporates a resilient opaque tube positioned along the optical axis. When the resilient opaque tube is twisted, a constricting circular aperture forms a circular iris in an intermediate portion thereof. The circula... | 12/31/1996 |
