Patents Examined by Russell E. Adams
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Automatic light adjustment apparatus for a camera on which a photographic lens can be freely mounted
Patent number: 5504553Abstract: An automatic light adjustment apparatus for a camera on which a photographic lens can be mounted freely comprises a flash device capable of emitting light, a photometric device which divides a field into a plurality of areas for the photometry of the light beam which is emitted from the flash device and reflected by each of the areas, in which the light beam is arranged to reach the photometric device after being reflected by the film plane, a photometric output correcting device which corrects the photometric output of the photometric device in accordance with the characteristics of the mounted photographic lens, and a light adjustment controlling device which suspends the light emission of the flash device in accordance with the photometric output corrected by the photometric output correcting device.Type: GrantFiled: June 7, 1995Date of Patent: April 2, 1996Assignee: Nikon CorporationInventor: Tadao Takagi -
Patent number: 5504552Abstract: A camera system comprises a brightness measuring circuit, a exposure line choosing circuit, an operable switch, a film driver and a film driving mode selector. The brightness measuring circuit measures brightness of a photographic scene to send a brightness value. The exposure line choosing circuit chooses one of a plurality of exposure lines in which each lines selects a combination of an aperture value and a shutter speed value at each brightness value. The film driver drives a film in either of a first mode in which the film is wound only one frame in response to the operation of the operable switch and a second mode in which the film is wound frame by frame continuously as long as the operable member is operated. The film driving mode selector selects one of the modes in accordance with the exposure line chosen by the choosing circuit.Type: GrantFiled: February 28, 1994Date of Patent: April 2, 1996Assignee: Minolta Camera Kabushiki KaishaInventors: Takehiro Katoh, Yoshihiko Azuma, Masayasu Hirano, Naohiro Kageyama, Toshihiko Ishimura, Kenji Tsuji, Hiroshi Ootsuka
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Patent number: 5504550Abstract: A camera having a visual line detection device, wherein camera control corresponds to the detection of the visual line of the photographer and on photographic information, such as focus and distance information, obtained through the photographic lens. Camera control can also correspond to the detected visual line and a selected program chart which provides shutter speeds and stop values to obtain specific picture effects.Type: GrantFiled: February 15, 1994Date of Patent: April 2, 1996Assignee: Nikon CorporationInventors: Tadao Takagi, Kouichirou Minamino
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Patent number: 5502537Abstract: A camera which provides accurate prediction of future field position accompanying the movement of a photographic subject. The future field position is predicted based upon focus detection results taken during a short time period and during a long time period relative to a predetermined time period. A selection of the focus detection results taken either during the short time period or during the long time period, used to predict future field position, is made based upon parameters which indicate at least one of field movement speed, field movement acceleration, focal length of the photographic lens, and focusing distance. The focus adjustment device is capable of discriminating between a sudden change in field position and a gradual change in field position in order to modify the method by which prediction of future field position is performed. Additionally, the focus detection device performs prediction of future field position accurately when photography is performed in rapid succession.Type: GrantFiled: October 19, 1993Date of Patent: March 26, 1996Assignee: Nikon CorporationInventor: Ken Utagawa
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Patent number: 5499075Abstract: A photometric apparatus of a camera for carrying out a multi-segmented photometry by receiving object light reflected at a film or the shutter includes a plurality of photometric elements which are disposed at positions to respectively receive reflected light from the film or the shutter. The elements segmented in accordance with each of regions segmenting the object field, corresponding to regions of the film or the shutter, and are arranged in parallel in a predetermined direction within a mirror box so as to respectively receive light reflected with diffusion angles less than a predetermined angle from respective reflection regions of the film or the shutter.Type: GrantFiled: January 10, 1995Date of Patent: March 12, 1996Assignee: Nikon CorporationInventors: Toshihiro Sato, Tadao Takagi, Seiichi Yasukawa
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Patent number: 5499074Abstract: An autofocus camera conducts a focus detection operation with one of differently directed sets of photoelectric conversion elements which is given priority according to the detected attitude of the camera. If focusing cannot be effected using the elements given priority, a focus detection operation is automatically conducted with the other elements. Also provided is a camera having a first mode of operation in which focusing detecting operations are conducted which collectively utilize outputs of all of the elements of differently directed sets of photoelectric conversion elements when a first camera attitude is detected, and a second mode of operation in which focusing detecting operations are conducted which collectively disregard the output of at least one conversion element when a second camera attitude is detected.Type: GrantFiled: May 30, 1995Date of Patent: March 12, 1996Assignee: Nikon CorporationInventors: Keiji Ohsawa, Nobuo Matsukawa, Sunao Nishioka, Ryuichi Mori, Yoshiyuki Nakano
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Patent number: 5497210Abstract: Apparatus with focus detection circuitry and sight axis detection circuitry includes multi-point focus state detection circuitry for detecting focus states of an objective lens for a plurality of areas in a field of view. Sight point detection circuitry is provided for detecting a sight point state (e.g., visual axis) of an observer. Control circuitry is provided for executing, in parallel, a detection operation of the multi-point focus state detection circuitry and a detection operation of the sight point detection circuitry.Type: GrantFiled: December 15, 1994Date of Patent: March 5, 1996Assignee: Canon Kabushiki KaishaInventor: Yukio Odaka
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Patent number: 5497215Abstract: The invention provides a camera photometry system that uses accumulation-type photometry elements to output photometric information related to the brightness of the subject field. The invention eliminates the smear phenomenon caused by the effects of the brightest parts of the subject field while also appropriately measuring the light of the major subject in the subject field. The invention is a camera photometry system equipped with a photometry mechanism which measures light using accumulation-type photoelectric elements by dividing the subject field into multiple photometry regions, and which outputs photometry information related to the brightness of the subject field, with the photometry element being equipped with a photoelectric mechanism for converting light into electricity which is stored and a transmission mechanism for transmitting the electric charge which is stored by the photoelectric mechanism.Type: GrantFiled: February 2, 1995Date of Patent: March 5, 1996Assignee: Nikon CorporationInventor: Hiroyuki Iwasaki
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Patent number: 5495313Abstract: In a light metering device, first luminance information is calculated from the output of a first photoelectric converter which photoelectrically converts the light beam from a first area of the object field. After a predetermined time from the photoelectric conversion, second luminance information is calculated from the output of a second photoelectric converter which photoelectrically converts the light beam from a second area, having an overlapping area with the first area. A first overlapping area luminance, in the overlapping area of the first photoelectric converter, and a second overlapping area luminance, in the overlapping area of the second photoelectric converter are determined, and the light values in the first and second areas are calculated from the first and second luminance information and the first and second overlapping area luminance.Type: GrantFiled: June 5, 1995Date of Patent: February 27, 1996Assignee: Nikon CorporationInventor: Tadao Kai
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Patent number: 5493361Abstract: A focus correcting apparatus for an auto focus camera having non-TTL type distance measuring means has first memory means for memorizing the amount of deviation of an imaging point from the surface of film caused by the irregularity during lens assembly or the irregularity of the dimensions of lens parts or the refractive indices of lens materials, calculating means for calculating the amount of correction movement of a focusing lens group from the memorized value in the first memory means and the amount of movement of the imaging point per unit amount of movement of the focusing lens group, and lens driving means for driving the focusing lens group on the basis of the final amount of movement consisting of the amount of movement of the focusing lens group calculated from a measured distance value obtained by the non-TTL type distance measuring means, plus the amount of correction movement of the focusing lens group found by the calculation.Type: GrantFiled: June 17, 1994Date of Patent: February 20, 1996Assignee: Nikon CorporationInventors: Shigemasa Sato, Atsushi Shibayama
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Patent number: 5486893Abstract: A camera has a predicted image display device in which image signals based on different kinds and control values of photographing information are stored and in which images based on the stored image signals are displayed. Photography may be performed based on the kinds and control values of photographing information for a displayed image or images selected by the photographer. The displayed images may have various combinations of luminance values, focus positions, and angles of view.Type: GrantFiled: June 1, 1995Date of Patent: January 23, 1996Assignee: Nikon CorporationInventor: Tadao Takagi
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Patent number: 5485236Abstract: A camera is provided with an object distance measuring sensor for detecting an object distance, an object brightness measuring sensor for detecting an object brightness, a photographing lens, a position of which along an optical axis is variably set, and a diaphragm mechanism having an aperture value that is variably set. A single movable control member, that is moved in one direction upon a shutter release operation, a first cam for setting the position of the photographing lens in accordance with the movement of the control member, and a second cam for setting the aperture value of the diaphragm mechanism in accordance with the movement of the control member, are also provided.Type: GrantFiled: December 29, 1993Date of Patent: January 16, 1996Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Akihiro Arai, Hisashi Tatamiya
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Patent number: 5485239Abstract: A camera incorporating an auto-zoom function made operative when a photographer holds both a camera body and a lens barrel.Type: GrantFiled: December 2, 1993Date of Patent: January 16, 1996Assignee: Canon Kabushiki KaishaInventor: Toshifumi Ohsawa
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Patent number: 5485240Abstract: A focusing controller for photographic apparatuses includes: a distance meter which detects film-to-object distance to calculate and emit a distance signal; a lens shifting distance calculating device which calculates a lens shifting distance for effecting focusing in a focusing optical system on the basis of the distance signal by using one or two or more linear expressions; and a driving device for driving the focusing optical system in accordance with the lens shifting distance; the focusing controller allowing both the lens shifting amount for the focusing optical system and the reciprocal of film-to-object distance to be set at equal intervals.Type: GrantFiled: August 3, 1994Date of Patent: January 16, 1996Assignee: Nikon CorporationInventors: Hiroyuki Tsuru, Shigemasa Sato, Hiroshi Terunuma
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Patent number: 5485242Abstract: An exposure control apparatus of a camera having a photometer for detecting a brightness of an object to be taken, an exposure value calculator for calculating an optimum exposure value in accordance with the object brightness, and an exposure factor setting device for setting a pair of exposure factors having a shutter speed and a diaphragm value, including an exposure factor manual setting device, a specific program exposure mode in which the exposure factors corresponding to the optimum exposure values are automatically set, and an exposure factor modifying device for enabling the exposure factor manual setting device to manually set one of the exposure factors when the exposure factor manual setting device is actuated in the specific program exposure mode.Type: GrantFiled: June 5, 1995Date of Patent: January 16, 1996Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Osamu Sato, Satoshi Nakano, Isamu Hirai, Toshiyuki Kitazawa, Takayuki Sensui, Masato Yamamoto, Toshimasa Yamanaka, Takenao Shishikura, Akio Takahashi
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Patent number: 5483318Abstract: A camera includes a CCD line sensor divided into a plurality of blocks and a plurality of monitors provided near each of the divided blocks and sensing the amount of received light corresponding to each block. The storage of charge in each block of the CCD is controlled based on the amount of the light received by the monitor. Each block corresponds to each part of an object in a finder of the camera.Type: GrantFiled: June 3, 1994Date of Patent: January 9, 1996Assignee: Minolta Camera Kabushiki KaishaInventors: Masataka Hamada, Kazuhiko Yukawa, Tokuji Ishida, Toshio Norita, Hiroshi Ueda
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Patent number: 5483306Abstract: A soundtrack interface for a motion picture projector allows the projector to sense dye only soundtracks or silver soundtracks. The system includes: a) an infrared filter: b) means for moving the infrared filter into the optical path between the sound system light source and photo detector when a film having a dye only soundtrack is to be projected, and for moving the infrared filter out of the optical path when a film having a silver soundtrack is to be projected; c) a preamplifier; and d) means for switching the preamplifier into a circuit between the photo detector and the sound amplifier when a film having a dye only soundtrack is to be projected and out of the circuit when a film having a silver soundtrack is to be projected.Type: GrantFiled: May 17, 1994Date of Patent: January 9, 1996Assignee: Eastman Kodak CompanyInventor: Nestor M. Rodriguez
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Patent number: 5477765Abstract: A vibrato unit including a base plate constructed to fit on a guitar face, a mounting plate pivotally attached to the base plate, and a plurality of saddle mounts, each pivotally attached to the mounting plate. The vibrato unit also includes a plurality of springs, where each spring is affixed between a saddle mount and the base plate and biasing the saddle mount into the normal position. A plurality of vibrato track sections which provides a substantially continuous track along the vibrato unit are included, where one section is mounted on a common vibrato track mount, which is affixed to the mounting plate, and the rest are each mounted on one of the plurality of saddle mounts. Also, the vibrato unit includes a vibrato arm having a movable block attached to one end thereof for movement along the continuous track and when the arm is manipulated the mounting plate and/or the saddle mounts are moved to the vibrato position.Type: GrantFiled: March 24, 1994Date of Patent: December 26, 1995Inventor: William C. Dietzman
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Patent number: 5477303Abstract: The invention provides a TTL-phase difference AF type photographic device best suited for use on normal/panoramic size cameras, etc., which is built up of a condenser lens 3 located in the rear of a predetermined image-formation plane 2 of a taking lens 1, an aperture-stop 6 located in the rear of the lens 3 and having a pair of apertures, a pair of separator lenses 7 located in the rear of the aperture-stop 6, a photoreceptor element array 8 located at a position where light beams emanating from the separator lenses 7 form an image, and a pair of conversion lenses 9 which can be inserted in, or retracted from, a focal point detecting system, and have positive power. In the normal size state the conversion lenses 9 remain inserted in the focal point detecting system, and in the panoramic size state where they are retracted from the system, the absolute value of the focal point detecting system is made larger than in the normal size state, so that the focusing accuracy can be increased.Type: GrantFiled: September 10, 1993Date of Patent: December 19, 1995Assignee: Olympus Optical Co., Ltd.Inventor: Hisashi Goto
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Patent number: 5475466Abstract: Normally, movement of an object to be photographed is detected based upon the brightness information output by a photometric means, and the object to be photographed is followed up. During the exposure process the photometric means cannot perform photometry, and therefore the movement of the object to be photographed during exposure is predicted based upon the movement information for the object to be photographed detected before the start of the exposure process, and the position of the object to be photographed after the conclusion of the exposure process is obtained. When the exposure process has been completed, follow up of the object to be photographed is restarted from the predicted position which has been calculated. By doing this, the object to be photographed is not lost sight of after the exposure process has been completed, and it is possible to continue follow up of the object to be photographed from its predicted position.Type: GrantFiled: January 27, 1994Date of Patent: December 12, 1995Assignee: Nikon CorporationInventors: Hiroyuki Iwasaki, Tadao Takagi