Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7374353 | Light control apparatus and optical apparatus There is provided a light control apparatus that maintains the overall apparatus size small, increases the number of stop stages, and is suitable for both the shutter and stop actions. A light control apparatus includes a first actuator, a second actuator, a first l... | 05/20/2008 |
| 7372498 | Image pickup apparatus having a shutter clutch In an image pickup apparatus having an openable and closable shutter mechanism to protect an image pickup lens portion of a ultra-small and light-weight video camera, the shutter mechanism is composed of a drive mechanism 34 including an output shaft rotated ... | 05/13/2008 |
| 7253575 | Industrial optical shutter A highly versatile optical shutter for industrial and scientific applications is disclosed. The has a aperture which defines a light path through the shutter, and a shutter vane or blade that is moved into and out of the light path using a precision, microprocessor ... | 08/07/2007 |
| 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 |
| 7053514 | Image apparatus and drive motor A drive motor is proposed, which serves as a drive source for a movement mechanism constituting an iris for an optical path of an imaging system. The drive motor has a shaft serving as a center of rotation, a magnet, two-pole magnetized and rotated around the shaft,... | 05/30/2006 |
| 6903777 | Lens shutter for digital still cameras A lens shutter has a diaphragm blade, a shutter blade, and a motor with a rotor reciprocatingly turned between an initial position and a final position by a current applied to a coil, to move the diaphragm blade to stop at an aperture regulating position and the shu... | 06/07/2005 |
| 6869233 | Image capture device An image capture device is provided including more compact components to enable the fabrication of more compact image capture devices. In one particular embodiment, a compact shutter mechanism is provided that requires less space within the camera when the shutter i... | 03/22/2005 |
| 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 |
| 6702483 | Optical element An optical device capable of controlling its optical transmittance. The optical device has a first liquid conductive or having a polarity and a second liquid. The first and second liquids are substantially equal in refractive index but differ in transmitt... | 03/09/2004 |
| 6585429 | Camera shutter unit having a shutter blade to open and close an exposure aperture The camera shutter unit of the present invention is provided with a diaphragm blade arranged to be capable of moving between a stopping-down position wherein an aperture is stopped down, and an evacuating position wherein the aperture is opened. A shutter... | 07/01/2003 |
| 6547457 | Camera shutter unit The camera shutter unit of the present invention comprises a diaphragm blade arranged to be capable of moving between a stopping-down position wherein an aperture is stopped down, and an evacuating position wherein the aperture is opened. A shutter blade ... | 04/15/2003 |
| 6493513 | Exposure control device for camera preventing shutter release before aperture changeover A shutter device for a camera includes a shutter blade for providing an exposure by opening/shutting a photographic light path, and a shutter drive lever for driving the shutter blade. The shutter device includes a shutter release button. A photometric sw... | 12/10/2002 |
| 6176627 | Method of controlling exposure of camera and diaphragm driving device for performing same A diaphragm driving device for a camera with a single type sector includes a shutter base, a driver installed on the shutter base, and a diaphragm ring rotatably placed on the shutter base with the same center and connected to the driving source to receiv... | 01/23/2001 |
| 6001465 | Light shielding blade for camera made of para-orientation aromatic polyamide film A light-shielding blade for use in cameras utilizes a film of para-type aromatic polyamide for its base material. The light-shielding blade has a single-layer structure using an aramid film as its blade material. The film is added with carbon black at a r... | 12/14/1999 |
| 5745814 | Camera lens shutter unit having a structure which reduces the shutter unit thickness A camera lens shutter having separate aperture blades and shutter blades arranged in a manner to provide a shutter unit having decreased thickness. The lens shutter includes a first shading member to expose an exposure aperture when in an open state and t... | 04/28/1998 |
| 5634163 | Lens-fitted photo film unit A lens-fitted photo film unit is pre-loaded with photo film (31). An exposure is taken through an exposure opening (43) upon depression of a shutter button (14) to a full depressed position. A halfway position of the shutter button is less deep than the f... | 05/27/1997 |
| 5327185 | Motor driven system for controlling the diaphragm and shutter of a camera A motor driven shutter has diaphragm blades and shutter blades controlled by a single motor. The shutter comprises a driving member actuated by the motor, a diaphragm member for setting the diaphragm blades to a predetermined position via the driving memb... | 07/05/1994 |
| 5255037 | Shutter blade opening and closing device The camera shutter comprises two shutter blades which have first opening forming portions and second opening forming portions capable of alternatively forming two exposure openings different in area on an exposure aperture. These shutter blades are opened... | 10/19/1993 |
| 4227792 | Device for setting exposure time and aperture size on cameras A device for setting or controlling shutter exposure time and diaphragm working aperture size on cameras having a lens shutter assembly with a reciprocating shutter sector system for opening and closing the lens passage and a diaphragm segment system whic... | 10/14/1980 |
| 4166685 | Bladed shutter for camera with focal plane shutter A bladed shutter is assembled into an interchangeable lens of a camera with a focal plane shutter, and comprises a plurality of shutter blades for opening and closing a taking light path, a pair of shutter opening and shutter closing rings for respectivel... | 09/04/1979 |
| 4062029 | Lens shutter actuating device for quick-return type single-lens reflex camera A single-lens reflex camera shutter having an operating ring driven in one direction by a gear-rack and pinion combination. The operating ring actuates the diaphragm and shutter blades and is stopped by a stop lever during the taking of an exposure. The s... | 12/06/1977 |
| 4016573 | Shutter control for photographic camera apparatus This invention is directed to the control of a camera shutter mechanism by means of a pair of resilient control members. A first control member in the form of a fast acting spring is attached to the camera base member and, with operation initiates at a re... | 04/05/1977 |
