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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Katayama; Akira
Address:
Koganei, JP
No. of patents:
46
Patents:




Patent Number Title Of Patent Date Issued
6389235 Camera having the capability to detect and display insufficient shutter speed May 14, 2002
A camera includes a shutter unit for limiting the exposure time to a record medium, a shutter time setting unit for setting the shutter time of the shutter unit, a shutter drive and control unit for driving and controlling the shutter unit, a shutter condition detecting unit for detectin
6330398 Vibration reduction apparatus December 11, 2001
A vibration reduction apparatus includes a vibration detector for detecting movement; and an image blur reduction mechanism including a vibration reduction optical system for preventing an image from blurring, and a drive mechanism for driving the vibration reduction optical system. The
6128035 Anti-blur image pickup device October 3, 2000
A blur-correcting image pickup device includes, but is not limited to an image pickup optical system for picking up an image, a vibration-detecting device which detects vibrations of the image pickup device and generates an output relative to the detected vibrations, a blur-correcting de
5953544 Camera having an image blur suppression device September 14, 1999
An image-shake correcting camera comprises an image shake correcting device for correcting image shakes caused by camera shakes and a photographic mode setting device for setting an operation condition of camera in photography, in which the image shake correcting device changes a cor
5905920 Camera with monitoring and testing of camera shutter operations May 18, 1999
A camera which prevents accidents which could lead to damage to the shutter when performing shutter time tests in the opened state of the back cover of a camera. The camera has a shutter to limit the exposure time of the recording medium which has been loaded, a measurement unit to measu
5864722 Vibration preventing camera January 26, 1999
A vibration preventing camera includes a vibration amount detecting unit for detecting the amount of vibration, a vibration correcting unit for correcting vibration, a light measuring unit for measuring the light value at a subject, and a control unit for controlling the vibration correc
5835800 Camera and recording medium forwarding device suitable for use in a camera November 10, 1998
A camera has a calculator which calculates a photographing condition suitable for a selected exposure mode. A driving device of the camera performs a photographing operation in accordance with a nominal value of an exposure parameter calculated by the calculator. The camera is provided
5771404 Shake preventing apparatus in camera June 23, 1998
A shake preventing apparatus in a camera, comprises a shake detecting device for detecting an amount of shake upon small motion of the camera, a shake correcting device for correction-driving a photo taking optical system in a direction to keep an image on a plane of a film unshaken,
5761552 Camera having shutter instrumentation device for measuring shutter speed June 2, 1998
A camera which can detect the actual opening/closing state of the camera shutter based on a signal reflected towards the shutter by a signal projection unit and received by a signal receiving unit. The signal received by the signal receiving unit is based on the reflectivity of the s
5761545 Pan shot device for a camera June 2, 1998
In a device, an angular velocity detector detects the angular velocity of a camera body and produces a signal conforming thereto. Whether the camera is performing pan shot is discriminated on the basis of the produced signal. Preferably, the discrimination is effected on the basis of a
5758213 Camera having a shutter measuring apparatus May 26, 1998
A shutter of a camera is provided with a shutter trip detecting device includes LEDs and PTRs. Measured are tripping timings of leading and trailing curtains for admitting and intercepting object light to an aperture. An exposure time on a film and a tripping time (curtain velocity)
5752091 Camera having animage blur suppression device May 12, 1998
An image-shake correcting camera comprises an image shake correcting device for correcting image shakes caused by camera shakes and a photographic mode setting device for setting an operation condition of camera in photography, in which the image shake correcting device changes a cor
5748391 Camera with vibration compensation device having anti-vibration lens urging mechanism and feed s May 5, 1998
A camera having an optical system which is shiftable to compensate for vibrations affecting the camera, a shift mechanism which shifts the optical system along an axis, and an urging mechanism. The urging mechanism provides an urging force along the axis to urge the optical system an
5729770 Image movement correcting device effecting image movement correction depending on position of ce March 17, 1998
This specification discloses an image movement correcting device for a photographing apparatus for appropriately judging a variation in the amount of image movement correction by the difference in the position of the center of rotation, and effecting accurate image movement correction.
5727246 Shutter device March 10, 1998
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 plate for driving the shutter blades,
5715479 Blur prevention device for preventing image blur February 3, 1998
A blur prevention device is equipped with first and second drive units which can move a blur prevention lens in a plane orthogonal to an optical axis of a main optical system. First and second transfer units transfer the amount of movement of the drive units to the blur prevention lens a
5713049 Camera-shake display device January 27, 1998
A camera-shake display device comprises a detection unit for determining whether a photographing lens detachably mounted on a camera body is provided with a compensation optical system for compensating camera-shake upon reception of a signal representing the camera-shake amount corre
5708864 Shake preventing apparatus in camera January 13, 1998
A shake preventing apparatus in a camera, comprises a shake detecting device for detecting an amount of shake upon small motion of the camera, a shake correcting device for correction-driving a photo taking optical system in a direction to keep an image on a plane of a film unshaken,
5678106 Driver for piezoelectric actuator and shutter control device utilizing piezoelectric device October 14, 1997
A driving device for a piezoelectric actuator, in which a voltage is applied to a piezoelectric actuator to generate a mechanical deformation therein, thus actuating a mechanical system. In an aspect, the piezoelectric actuator is at first given a voltage of inverse polarity, for gen
5677791 Lens barrel having an image blur prevention system with improved arrangement to prevent flares October 14, 1997
A lens barrel having an image blur prevention system incorporated into the lens barrel. The image blur prevention system includes an image blur prevention optical system which is arranged to eliminate the problem of harmful light entering the lens barrel. The lens barrel includes an
5675445 Lens barrel having optical systems which can be individually installed in corresponding lens fra October 7, 1997
A lens apparatus, such as a lens barrel for a camera, allows different optical systems to be easily removed and installed. The lens apparatus has first and second optical systems with an optical axis of the lens apparatus extending thorough the first and second optical systems. First
5640611 Camera having an image blur suppression device June 17, 1997
An image-shake correcting camera including an image shake correcting device for correcting image shakes caused by camera shakes and a photographic mode setting device for setting an operation condition of camera in photography, in which the image shake correcting device changes a cor
5606384 Lens barrel having an image blur prevention system arranged with respect to other lens barrel de February 25, 1997
A lens barrel having an image blur prevention system including an image blur prevention optical system to prevent image blur, and an image blur prevention optical system drive mechanism to move the image blur prevention optical system within a plane that is generally perpendicular to
5587754 Camera with guiding of rectilinear lens movement December 24, 1996
A lens driving device for a zoom and a multifocus lens housing of a camera, the lens driving device comprising a holding member for holding imaging lenses and having a first helicoid formed relative to the optical axis of the lenses; a rotary member having a second helicoid which is arra
5581317 Vibration preventing device December 3, 1996
A vibration preventing device comprises a vibration preventing optical system movable for the prevention of vibration, a vibration preventing mechanism portion, a holding member for fixedly holding the vibration preventing optical system, and a frame member for mounting the holding m
5576787 Camera having an image blur suppression device November 19, 1996
An image-shake correcting camera including an image shake correcting device for correcting image shakes caused by camera shakes and a photographic mode setting device for setting an operation condition of camera in photography, in which the image shake correcting device changes a cor
5559574 Image movement correcting device effecting image movement correction depending on position of ce September 24, 1996
This specification discloses an image movement correcting device for a photographing apparatus for appropriately judging a variation in the amount of image movement correction by the difference in the position of the center of rotation, and effecting accurate image movement correction.
5546159 Camera for preventing camera shake August 13, 1996
An anti-shake camera includes a camera shake correction lens for correcting image blurring caused by a camera shake, a camera shake correction lens position detection device for detecting the moving position of the camera shake correction lens, and an indication device for indicating a s
5537185 Camera-shake display device July 16, 1996
A camera-shake display device comprises a detection unit for determining whether a photographing lens detachably mounted on a camera body is provided with a compensation optical system for compensating camera-shake upon reception of a signal representing the camera-shake amount corre
5532785 Camera having means for correcting shutter time by measuring the actual exposure time July 2, 1996
A shutter operation detection device comprising a light emitting diode and a photo transistor is provided in proximity to the shutter curtains to measure the actual exposure time. The difference between the control exposure time, which is based upon the brightness value of the subject to
5515135 Camera lens driving device with rectilinear guide and flexible electrical substrate May 7, 1996
A lens driving device for a zoom and a multifocus lens housing of a camera, the lens driving device comprising a holding member for holding imaging lenses and having a first helicoid formed relative to the optical axis of the lenses; a rotary member having a second helicoid which is arra
5489960 Focal plane shutter device for a camera February 6, 1996
A focal plane shutter device is provided in which when a rear shutter diaphragm travels in a first direction to retract from a photographing image plane from a state where the rear shutter diaphragm and a front shutter diaphragm shade the photographing image plane doubly, a balancer
5463443 Camera for preventing camera shake October 31, 1995
An anti-shake camera includes a camera shake correction lens for correcting image blurring caused by a camera shake, a camera shake correction lens position detection device for detecting the moving position of the camera shake correction lens, and an indication device for indicating a s
5457514 Shutter instrumentation device for detecting the opening and the closing of a camera shutter October 10, 1995
A camera having a mechanism to determine the precise times at which a shutter or shutter blinds open or close an aperture. The camera measures the actual time in which shutter blinds pass over the aperture by utilizing a projection unit, positioned on one side of the shutter, to proj
5416558 Camera with shake preventing apparatus May 16, 1995
A camera includes an aperture stop or lens shutter mechanism unit, a base on which the mechanism unit is mounted, a shake correction lens juxtaposed with a photographing lens in an optical axis direction, and a driving unit for moving the shake correction lens in a direction perpendicula
5402197 Camera shake alarming apparatus March 28, 1995
A camera shake alarming apparatus comprises a storage portion for storing specification information of a camera; a subject distance detecting portion for detecting a subject distance for photographing a subject; a calculating portion for calculating an allowable camera shake quantity on
5367353 Operation control device for a camera November 22, 1994
An automatic-focus camera has a focus lock system that stores focus adjusting information so that a photo-taking lens may be kept focused on an object during one or more exposures. The camera has a self timer, an automatic exposure system with different program modes, and has continuous
5216459 Operation control device for a camera June 1, 1993
An automatic-focus camera has a focus lock system that stores focus adjusting information so that a photo-taking lens may be kept focused on an object during one or more exposures. The camera has a self timer, an automatic exposure system with different program modes, and has continuous
5184167 Distance metering device of a camera February 2, 1993
A distance metering device of a camera eliminates a troublesome re-setting operation when a remote controller is used as a cable release and avoids the creation of defocused photograph when the remote controller is used as a self-timer.When a first remote control signal receiver is selec
5172156 Camera with minimum subject-distance alarm display device December 15, 1992
A camera with a too-close-subject-distance alarm display device, further comprising a flash device for flashing the light to a subject to be photographed; a selection device for selecting at least the flash exposure mode in which the flash device is permitted to flash or the flash inhibi
5018832 Device for preventing generation of harmful light in objective lens assembly May 28, 1991
In an objective lens assembly for an optical instrument comprising inner and outer tube members with outer and inner engaged helicoidal screws, respectively, the normal trapezoidal-section main ridge of the helicoidal screw of the outer tube member is modified to provide one or more wall
4789875 Variable focus camera December 6, 1988
Variable focus camera includes primary and secondary lens systems, in which only the primary lens system is used for wide angle shots while the combination of the primary with the secondary lens system is used for telephoto shots.The variable focus camera can exactly and positively contr
4752796 Still camera June 21, 1988
The present invention relates to a camera in which photographing lens means is moved along an optical axis thereof between an extended position and a withdrawn position, a lens system of the lens means being protected by protective cover means moved by cover operating means, and being mo
4657366 Shutter device for camera April 14, 1987
A focal plane shutter for camera comprises an opening blade group and a closing blade group, an opening blade-driving member and a closing blade-driving member, an exposure operation means for moving said blade-driving members for exposure operation, a braking member for changing the
4624542 Buffer for viewfinder mirror in a single lens reflex camera November 25, 1986
A buffer comprises a specially designed bearing for supporting the rotation axis of a rotatable mirror. The bearing structure is so designed that when the rotation of the mirror is stopped by a stopper, the bearing can shift the rotation axis in the direction in which force is applied to
4600289 Aperture control system for cameras July 15, 1986
An aperture control system comprises compensating means for actuating an electromagnetic latch mechanism at an earlier time to compensate errors in controlled aperture values due to the mechanical time delay in the electromagnetic latch mechanism, and means for setting a compensated


 
 
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