Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7798729 | Focal-plane shutter A focal-plane shutter has a first plate having a first opening, a second plate having a second opening, a shutter blade disposed between the first plate and the second plate, for opening and closing the first opening and the second opening, and a thin plate disposed... | 09/21/2010 |
| 7766563 | Shutter device and image-capturing device A shutter device includes: a base plate having a photographic aperture and a front surface and a rear surface; a shutter blade group that closes and opens the photographic aperture to light; a rear cover having an opening portion that corresponds to the photographic... | 08/03/2010 |
| 7212244 | Focal plane shutter apparatus A focal plane shutter apparatus is constructed by a light shielding blade, a fitting pin attached to the blade and an arm which is slidably engaged with the fitting pin to open or close the blade. A surface hardness of the fitting pin is higher than that of the arm.... | 05/01/2007 |
| 7178998 | Focal plane shutter for digital still cameras A drive member attached to the output shaft of a DC motor placed on a shutter base board includes a drive pin connected to the arm of a shutter blade within a blade chamber for driving the shutter blade to open and close an exposure opening with the reciprocal rotat... | 02/20/2007 |
| 7140788 | Camera body A camera which includes a camera body includes a main body and a mirror box fixed to the main body. The mirror box and the main body are made of a first material having a first thermal expansion coefficient and a second material having a second thermal expansion coe... | 11/28/2006 |
| 6805500 | Focal-plane shutter for cameras A focal-plane shutter for cameras is constructed so that the second blade group is placed in a blade chamber on the shutter base plate side and the first blade group is placed in a blade chamber on the auxiliary base plate side. The auxiliary base plate is placed on... | 10/19/2004 |
| 6726381 | Focal-plane shutter for cameras A focal-plane shutter for a camera is provided with two blade chambers into which a space between two base plates is partitioned by an intermediate plate having an aperture for exposure. A shutter blade group placed in each of the blade chambers is constructed with ... | 04/27/2004 |
| 6554502 | Light quantity controller A light quantity control apparatus includes a first base plate, at least one drive device mounted on the first base plate, a shutter blade mounted on the first base plate and engaging the drive device, an intermediate plate disposed above the shutter blad... | 04/29/2003 |
| 6474880 | Shutter device A shutter device with a shutter base plate having an aperture part and a protruding part. First and second shutter blade members are arranged to travel a predetermined movement distance and a distance shorter than the predetermined distance, respectively,... | 11/05/2002 |
| 6350069 | Focal-plane shutter for camera To prevent a front end of a slit forming sector of one of an open shutter sector group and a close shutter sector group from colliding with an upper edge portion of a partition opening of a partition plate and preventing leakage of light, a partition plat... | 02/26/2002 |
| 6229966 | Camera In a camera, at least a part of a wall portion of at least one of a film take-up spool chamber and a film-cartridge loading chamber is formed with a shutter mechanism.... | 05/08/2001 |
| 6036378 | Focal plane shutter unit having three plates A focal plane shutter unit includes two pairs of blade units consisting of a plurality of light shielding thin plates, a first plate having a first aperture, a second plate having a second aperture, disposed in a face-to-face relationship with the first p... | 03/14/2000 |
| 5727246 | Shutter device A shutter device includes shutter blades, a flexible printed circuit board electrically connectable to a camera main body, a shutter base plate having an aperture, a shutter drive mechanism arranged in the vicinity of the aperture on the shutter base plat... | 03/10/1998 |
| 5708892 | Support structure of a focal plane shutter in a camera A support structure of a focal plane shutter in a camera reduces the effects of impacts or vibrations accompanying opening and closing movements of a shutter such that the impacts or vibrations do not reach a camera body. The support structure includes a ... | 01/13/1998 |
| 5623711 | Camera having shutter block with guide rails Guide rails for positioning a film are formed on a shutter block. The guide rails project through an opening in a thin back plate of a camera body to regulate the position of a film drawn from a film cartridge chamber into a spool chamber. A frame apertur... | 04/22/1997 |
| 5508773 | Focal plane shutter for use in a photographic camera A focal plane shutter for use in a photographic camera in which a shutter base plate is made of a synthetic resin material and a metallic supporting plate is mounted on a front surface of the shutter base plate. Shafts pivoting levers for driving a leadin... | 04/16/1996 |
| 5266993 | Focal-plane shutter apparatus A focal-plane shutter apparatus comprises a first plate located on a film-plane side of a mirror box, a second plate located on a film-plane side of the first plate, a third plate located on an opposite side of the first plate to the film-plane side there... | 11/30/1993 |
| 5159371 | Shutter for camera A shutter for a camera includes a lever pivotable for operating a shutter, a shutter base plate formed from a synthetic resin, a shaft for pivotally supporting the lever, the shaft and the shutter base plate being formed from a synthetic resin as one unit... | 10/27/1992 |
| 5019847 | Shutter device A focal-plane shutter device comprises aperture opening blades including a blade with an edge for forming an exposure slit, aperture closing blades including a blade with an edge for forming the exposure slit, first and second base plates disposed between... | 05/28/1991 |
| 4963908 | Shutter for camara A shutter for a camera having leading and trailing blade groups movably interposed in between a plurality of plate-shaped members each of which having a shutter aperture, each of the blade groups including a plurality of divided blades, is provided with a... | 10/16/1990 |
| 4952957 | Focal plane shutter-type camera A focal plane shutter camera including a first chamber forming section having a baseplate with a shutter opening formed therein and which accommodates shutter blades and including a second chamber forming section which accommodates shutter controlling mem... | 08/28/1990 |
| 4926202 | Shutter for use in camera A camera shutter has a shutter base plate for pivotally supporting blade groups each constituted by a plurality of blades carried by arms and a thick-walled portion formed on the surface of the shutter base plate that carries the blade groups. The thick-w... | 05/15/1990 |
| 4814807 | Focal-plane shutter base A focal-plane shutter base for use in a camera includes a base plate having a shutter opening. Two sets of blades, each of which consists of a plurality of sheets for blocking light, are mounted on the base plate at one side of the shutter opening. The bl... | 03/21/1989 |
| 4493544 | Focal-plane shutter A focal-plane shutter for a camera comprises a pair of apertured base plates disposed parallel to each other with a predetermined spacing therebetween to form an aperture for exposure, and light-shielding blades mounted between the base plates at a normal... | 01/15/1985 |
| 4150890 | Device in camera shutter for maintaining separate blades in intimate contact with each other A plurality of separate shutter blades are arranged in a plane defined between a pair of base plates each having a shutter exposure aperture. Projections are provided on the base plates for urging the respective blades to be held in intimate contact with ... | 04/24/1979 |
