Exposure Control System Responsive To Distance Patents (Class 396/65)
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Patent number: 10078254Abstract: An imaging device includes a camera 31, a light source 32, a polarizer 35 arranged between the camera 31 plus the light source 32 and an object 11, and a spatial light modulator 40A arranged between the polarizer 35 and the object 11 to control a revolution angle of an emitting light polarization plane relative to an incident light polarization plane.Type: GrantFiled: April 3, 2015Date of Patent: September 18, 2018Assignee: Sony CorporationInventors: Yoshihito Higashitsutsumi, Shinichiro Gomi, Jun Iwama
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Patent number: 8988559Abstract: An electronic device includes a flash unit, an image sensor and a computing unit. The image sensor captures at least one first image and a second image, and captures a third image with the flash unit. The computing unit mixes the first images and the second image to form a mixed image. Besides, the computing unit integrates the mixed image and the third image to form an integrated image.Type: GrantFiled: January 28, 2013Date of Patent: March 24, 2015Assignee: Ability Enterprise Co., Ltd.Inventors: Chun-Hsiung Chao, Chin-Nan Chen
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Patent number: 8909036Abstract: An optical device includes an optical system, a diaphragm unit, a diaphragm unit, a focus-lens driving unit, a diaphragm driving unit, and a diaphragm control unit. The diaphragm control unit controls the diaphragm driving unit in accordance with the position to which the focus lens group has been moved by the focus-lens driving unit, thereby controlling the aperture opening of the diaphragm unit and ultimately limit a light beam passing through the camera system.Type: GrantFiled: September 12, 2013Date of Patent: December 9, 2014Assignee: Olympus Imaging Corp.Inventor: Yuzuru Taguchi
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Patent number: 8724887Abstract: A method of depth imaging includes acquiring a depth image from a depth camera, identifying an environmental factor invalidating depth information in one or more portions of the depth image, and outputting an environmental modification to mitigate the environmental factor.Type: GrantFiled: February 3, 2011Date of Patent: May 13, 2014Assignee: Microsoft CorporationInventors: Prafulla Masalkar, Alan Leach
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Patent number: 8300905Abstract: The presently described technology provides a method for adaptive image processing. The image processing method includes determining an entrance exposure of an object, determining an exit exposure of the object, and determining one or more image processing parameters based at least in part on the entrance and exit exposures. The presently described technology also provides a method for adaptive image display. The image display method includes determining an entrance exposure of an object, determining an exit exposure of the object, and displaying an attenuation map based at least in part on the entrance and exit exposures.Type: GrantFiled: November 18, 2005Date of Patent: October 30, 2012Assignee: General Electric CompanyInventor: Kadri N. Jabri
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Patent number: 8115814Abstract: An apparatus and method to track and to photograph a mobile object over a wide range, by a cooperative operation of multiple cameras. In addition, a mobile tracking system is provided for tracking the mobile object by the cooperation of multiple cameras, in which each camera includes a photographing device which photographs and recognizes the mobile object, a changing device which changes a view angle of the photographing device, a position deriving device which derives a position of the camera, a distance deriving device which derives the distance between the camera and the mobile object, and a communication device which transmits an identifier of the camera, a position of the camera, a moving direction of the mobile object and the distance between the camera and the mobile object to another camera and receives an identifier of the other camera, a position of the other camera, a moving direction of the mobile object and a distance between the other camera and the mobile object from the other camera.Type: GrantFiled: September 9, 2005Date of Patent: February 14, 2012Assignee: Canon Kabushiki KaishaInventors: Yoshihiko Iwase, Masaaki Imaizumi
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Patent number: 7801429Abstract: An aspect of the present invention provides an image taking apparatus comprising a flash emission device, a flash control device which adjusts a flash emission amount at the time of image taking using flash, an automatic focusing device which automatically performs focusing of an image taking lens, a determination device which determines, based on data on focusing performed by the automatic focusing device, whether or not a shooting distance is shorter than a normal shooting distance range at the time of image taking using flash, and a sensitivity setting device which sets a camera sensitivity at the time of image taking using flash, the sensitivity setting device which sets a camera sensitivity lower than a standard camera sensitivity set in advance with respect to the normal shooting distance range if the determination device determines that the shooting distance is shorter.Type: GrantFiled: May 25, 2007Date of Patent: September 21, 2010Assignee: FUJIFILM CorporationInventor: Syuji Nose
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Patent number: 7706674Abstract: A flash controlling method is disclosed. The method includes: acquiring image data by photographing a subject; detecting a predetermined target object from the image data; calculating a distance to the predetermined target object based on a size of the detected predetermined target object; controlling an amount of flash light to be emitted based on the calculated distance; setting a predetermined threshold based on a reachable distance of the flash light; and inhibiting emission of the flash light when the calculated distance is larger than the predetermined threshold.Type: GrantFiled: March 27, 2007Date of Patent: April 27, 2010Assignee: FUJIFILM CorporationInventors: Masahiko Sugimoto, Kenji Ito
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Publication number: 20100080546Abstract: An exemplary auto-focus method includes the following steps. An ambient brightness is measured before a pre-flash. Then, a pre-flash ambient brightness is also measured during the pre-flash is fired. A main flash ratio is subsequently calculated using the ambient brightness, the pre-flash ambient brightness, and a preset desired brightness. Next, an object distance is indexed using the calculated main flash ratio and a table. The table includes a collection of main flash ratios and a collection of object distances, where each flash ratio is associated with a corresponding object distance. Then an image distance corresponding to the indexed object distance is calculated using the imaging formula. The calculated image distance is converted into a number of focus steps of a focus lens. Finally, the focus lens is moved with a corresponding number of focus steps.Type: ApplicationFiled: December 30, 2008Publication date: April 1, 2010Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventor: CING-SHIN LIN
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Patent number: 7591597Abstract: A method for moving a device (4) provided with a camera (5) to a desired position (10) by means of a control system (7). The camera (5) is connected with the control system (7). Pictures are taken by means of the camera during movement. The number of pictures processed per time unit by means of the control system (7) is increased when the distance between the device (4) and the desired position (10) becomes smaller.Type: GrantFiled: June 21, 2004Date of Patent: September 22, 2009Assignee: Koninklijke Philips Electronics N.V.Inventors: Andrea Pasqualini, Dennis Erwin Bos
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Publication number: 20090180771Abstract: An imaging system acquires an image using focal point and field depth information. The system receives focal point and field information via a user interface and analyzes the image based on the focal point and field depth information to calculate characteristics of the content of the image. In addition, the system automatically determines the image exposure based on the characteristics. Furthermore, the system determines the appropriate aperture and exposure based on the field depth information.Type: ApplicationFiled: January 14, 2008Publication date: July 16, 2009Inventors: Ming-Chang Liu, Chuen-Chien Lee
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Patent number: 7529477Abstract: An image-taking apparatus includes a lighting section having LEDs that individually correspond to areas, into which a field is divided, and that each emit light to the corresponding one of the areas. The apparatus also includes a CCD and an AF section. The lighting section is configured to emit light to the field after an amount of emitted light for each of the divided areas is adjusted based on subject brightness information from the CCD and subject distance information from the AF section according to field conditions.Type: GrantFiled: May 19, 2006Date of Patent: May 5, 2009Assignee: FUJIFILM CorporationInventor: Hiroshi Endo
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Patent number: 7522824Abstract: An image taking device (1), which takes an image of an object by focusing reflected light from the object on an image sensor (212), is provided with a distance measuring sensor (27) for measuring a distance between the object and the image taking device (1), and means for controlling exposure time of the image sensor (212) upon taking an image in accordance with a measurement result.Type: GrantFiled: March 28, 2003Date of Patent: April 21, 2009Assignee: Fujitsu LimitedInventors: Satoshi Fukui, Takayuki Sugiura, Atsushi Miki, Shuji Kimura, Kiyoshi Chinzei, Mieko Nakano, Naoyuki Fujimoto, Mitsuhiro Gotoh, Toshio Endoh, Takahiro Aoki, Mitsuaki Fukuda, Masaki Watanabe, Shigeru Sasaki
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Patent number: 7493030Abstract: A scene is imaged by moving an optical lens relative to an image sensing surface (such as film or a pixel array) synchronously with exposing different portions of the image sensing surface. The synchronous actions are preferably adaptable to the scene being imaged, so objects at different object distances are focused at different times and exposed to different portions of the sensing surface at different times within an exposure frame period. Exposure time for the different portions of the sensor may be varied according to speed or brightness of the different objects in the scene to be imaged, as detected at the camera by measuring apparatus similar to auto focus distance measuring apparatus. A camera and a program of computer readable instructions are also detailed. Alternatives to moving the lens relative to the image sensing surface include changing a shape of the lens.Type: GrantFiled: June 24, 2005Date of Patent: February 17, 2009Assignee: Nokia CorporationInventor: Hannu Kakkori
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Patent number: 7456897Abstract: There is provided an image-taking apparatus which sets a proper exposure time with repressing camera shake in accordance with a situation of an object. This image-taking apparatus comprises an image-pickup element which converts an object image into an image signal and a controller which determines an exposure time of the image-pickup element, wherein the controller sets a maximum value of an exposure time of the image-pickup element in accordance with a size of an area which satisfies a predetermined condition for a distance of the object.Type: GrantFiled: December 6, 2004Date of Patent: November 25, 2008Assignee: Canon Kabushiki KaishaInventor: Akira Egawa
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Patent number: 7412158Abstract: A digital camera apparatus has a sensing surface that captures images at a first resolution. A derivative of the captured image is displayed at a viewfinder or stored in a memory, after encoding, with a second, generally lower resolution. The resolutions are related by a downscale ratio. A method for digitally imaging a scene includes providing an imaging lens and a digital image sensing surface such as a CCD sensing surface, and changing a focusing of the lens with respect to the sensing surface in correspondence with a variance of a parameter that relates a captured image at the sensing surface and another image deriving from the captured image. Preferably, the variance of the parameter is the downscale ratio. The focusing of the lens with respect to the sensing surface may be changed by changing the physical distance or by changing a shape of the lens, for example. Apparatus and computer program products are also detailed.Type: GrantFiled: August 8, 2005Date of Patent: August 12, 2008Assignee: Nokia CorporationInventor: Hannu Kakkori
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Publication number: 20080020795Abstract: An apparatus and method for selecting a shooting mode in a mobile terminal having a distance measurement unit for measuring the distance between a camera and an object are provided. The apparatus and method include a distance measurement unit for measuring a distance between the camera and the object when the mobile terminal enters a camera mode for photographing the object and a controller for selecting a shooting mode according to the measured distance. The mobile terminal selects an appropriate shooting mode according to the measured distance between the camera and the object, thereby enhancing the user's convenience. Also, the mobile terminal informs the user of the optimum distance in the selected shooting mode so that the user can take high-quality pictures.Type: ApplicationFiled: May 9, 2007Publication date: January 24, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Dae-Hyun KIM
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Publication number: 20070274698Abstract: An aspect of the present invention provides an image taking apparatus comprising a flash emission device, a flash control device which adjusts a flash emission amount at the time of image taking using flash, an automatic focusing device which automatically performs focusing of an image taking lens, a determination device which determines, based on data on focusing performed by the automatic focusing device, whether or not a shooting distance is shorter than a normal shooting distance range at the time of image taking using flash, and a sensitivity setting device which sets a camera sensitivity at the time of image taking using flash, the sensitivity setting device which sets a camera sensitivity lower than a standard camera sensitivity set in advance with respect to the normal shooting distance range if the determination device determines that the shooting distance is shorter.Type: ApplicationFiled: May 25, 2007Publication date: November 29, 2007Applicant: FUJIFILM CorporationInventor: Syuji Nose
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Patent number: 7262798Abstract: A digital camera simulates the use of fill flash. The camera takes a series of photographs of a scene at various focus distances. The photographs are stored, along with their corresponding focus distances. The photographs are analyzed to determine the distance to objects at various locations of the scene. Regions of a final photograph are selectively adjusted in brightness based on the distance information to simulate the effect that would have resulted had fill flash been used.Type: GrantFiled: September 17, 2001Date of Patent: August 28, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventors: Donald J Stavely, K Douglas Gennetten, David K. Campbell, Paul M Hubel
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Patent number: 7116492Abstract: A lens-controlling device controls a first lens unit which moves for zooming and a second lens unit which moves for correcting the displacement of an image plane caused by zooming and for focusing. The lens-controlling device includes a memory which stores data for obtaining target-position information representing a target position to which the second lens unit is to be moved, the target position corresponding to a position to which the first lens unit is moved from a current position and a controller which generates the target-position information on the basis of the data and controls the movement of the second lens unit on the basis of position information of the first lens unit and the target-position information.Type: GrantFiled: March 3, 2006Date of Patent: October 3, 2006Assignee: Canon Kabushiki KaishaInventor: Hiroto Okawara
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Patent number: 7016122Abstract: A lens-controlling device controls a first lens unit which moves for zooming and a second lens unit which moves for correcting the displacement of an image plane caused by zooming and for focusing. The lens-controlling device includes a memory which stores data for obtaining target-position information representing a target position to which the second lens unit is to be moved, the target position corresponding to a position to which the first lens unit is moved from a current position and a controller which generates the target-position information on the basis of the data and controls the movement of the second lens unit on the basis of position information of the first lens unit and the target-position information.Type: GrantFiled: September 1, 2004Date of Patent: March 21, 2006Assignee: Canon Kabushiki KaishaInventor: Hiroto Okawara
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Patent number: 6952291Abstract: An imaging device according to the present invention has: a photometric circuit that detects a brightness of a photographic subject based on a light flux from the photographic subject that passes through a photographic lens; an exposure calculation circuit that calculates an aperture value and a shutter speed based on the detected brightness of the photographic subject; an imaging element that converts the light flux from the photographic subject received on each photo-electric element to an electric signal and outputs the electric signal, the imaging element having a plurality of the photo-electric elements and a micro-lens in which each of micro-lens elements is arranged facing to each of the photo-electric elements in order to converge the light flux from the photographic subject to a light receiving surface of each of the photo-electric elements; and a correction circuit that corrects the aperture value calculated by the exposure calculation circuit so that a signal level of the electric signal of the ligType: GrantFiled: March 20, 2003Date of Patent: October 4, 2005Assignee: Nikon CorporationInventors: Masahiro Suzuki, Tadashi Ohta, Koichiro Kawamura
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Patent number: 6792203Abstract: In a camera a pickup element images an object image. An A/D converter A/D converts an output of the pickup element. A processing section includes a night scene judging section for judging whether or not the scene to be photographed is the night scene on the basis of a digital image signal output from the A/D converter. In a distance measuring apparatus of the camera. An area sensor is used for an auto-focus. A first judging section judges that the scene to be photographed is a night scene on the basis of an output of the area sensor. In the case where the first judging section judges that the photography scene is not the night scene, a second judging section judges whether or not the scene to be photographed is the reverse light scene. A main object specifying section specifies the main object in the case where either the first judging section or the second judging section judges the scene to be photographed is either the night scene or the reverse light scene.Type: GrantFiled: August 30, 2000Date of Patent: September 14, 2004Assignee: Olympus Optical Co., Ltd.Inventors: Masataka Ide, Osamu Nonaka
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Patent number: 6771897Abstract: The present invention discloses a lens apparatus that can switch the aperture diameter of the light-blocking member using a body structural member constituting a portion of the lens apparatus. The lens apparatus includes a lens unit that is moved in a direction of an optical axis, a light-blocking unit having a plurality of light-blocking members forming an aperture portion through which light passes, and a body structural member. The light-blocking unit and the body structural member move relative to one another in the direction of the optical axis according to a movement of the lens unit, and an aperture diameter of the aperture portion is switched by moving the body structural member between a first position in which the light-blocking members are prevented from opening beyond a predetermined aperture diameter, and a second position in which the light-blocking members are allowed to open beyond a predetermined aperture diameter.Type: GrantFiled: July 15, 2003Date of Patent: August 3, 2004Assignee: Canon Kabushiki KaishaInventor: Shinichi Masuda
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Publication number: 20040101296Abstract: A camera according to this invention includes a backlight judgment section which determines whether the photographic scene is against light by comparing the average luminance of the entire photographic screen obtained by photometry with the luminance of the main subject at a distance-measuring point selected by distance measurement. With the backlight judgment section, the camera performs suitable exposure control accompanied by illumination, such as supplementary light, at the time of exposure in a photographic scene where the main subject is against light.Type: ApplicationFiled: September 11, 2003Publication date: May 27, 2004Applicant: Olympus Optical Co., Ltd.Inventors: Koichi Nakata, Takahiro Doi, Osamu Nonaka
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Patent number: 6532060Abstract: A distance measuring apparatus has: an AF optical system for dividing object light beams into a pair thereof and forming images and; an AFIC for photoelectrically converting received object optical images in pixels, accumulating charges, and outputting object distance information on the basis of the object image signal. A CPU discriminates whether or not the object is based on a night view or a view in which the night view is the background on the basis of the output of the AFIC or an operation of a night view photographing mode switch, and corrects the object distance to a second predetermined distance shorter than a first predetermined distance when the object is based on the night view or the like and the object distance is longer than the first predetermined distance.Type: GrantFiled: March 9, 2000Date of Patent: March 11, 2003Assignee: Olympus Optical Co., Ltd.Inventors: Takeshi Kindaichi, Koichi Nakata
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Patent number: 6442343Abstract: 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, a flash unit and the second stop plate are actuated such that the middle stop opening is retracted from an photographic light path PL. The small stop opening is retracted from the photographic light path PL when subject luminance is less than a predetermined value. In high-luminance condition, the small stop opening and the middle stop opening are set on the photographic light path PL, and in middle-luminance condition, the small stop opening is retracted. In low-luminance condition, the middle stop opening is retracted by operation of the changeover knob, so only a large stop opening is set on the photographic light path PL.Type: GrantFiled: May 24, 2001Date of Patent: August 27, 2002Assignee: Fuji Photo Film Co., Ltd.Inventors: Nobuyuki Kameyama, Shigeki Takahara, Yuji Mikami
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Patent number: 6389229Abstract: A method and apparatus to determine the fstop that provides optimal image resolution for a predetermined depth-of-field. An approximate and exact method and apparatus are provided to determine the optimal resolution fstop. The optimal resolution fstop is a function of the lens focal length, depth-of-field in front of the object, wavelength of light, and distance of the object to the lens center. Once the optimal resolution fstop is determined, the camera is adjusted to the closest discrete fstop available. When the approximate field technique is utilized, the camera must be adjusted to the discrete fstop closest to, but not exceeding, the computed fstop.Type: GrantFiled: May 17, 2000Date of Patent: May 14, 2002Assignee: The United States of America as represented by the Secretary of the NavyInventors: Mark J. DiPippo, Bruce J. Bates
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Patent number: 6385399Abstract: An optical apparatus includes a first movable optical member, a second movable optical member, different from the first optical member, and a driving mechanism engaged with the second optical member, and operable in a first operation mode, in which the second optical member is movable by an electrical driving operation of the driving mechanism, and a second operation mode, in which the second optical member is movable by a manual driving operation. Operation of the driving mechanism is switched between the first operation mode and the second operation mode by control means such as a CPU, wherein, when the driving mechanism is operable in the second operation mode, the control means switches operation of the driving mechanism to the first operation mode in response to a driving operation of the first optical member.Type: GrantFiled: July 26, 2000Date of Patent: May 7, 2002Assignee: Canon Kabushiki KaishaInventor: Takeshi Idemura
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Patent number: 6167200Abstract: A mechanism, of a camera, to let an exposure operation be performed with a higher precision in a shorter time. The mechanism includes: a first device for taking an image of a region to be photographed and for outputting image information; a second device for detecting a subject region on the basis of the image information and for outputting subject region information; a third device for outputting a plurality of photometric values relative to a plurality of divided photometric regions; a fourth device for selecting and outtputting at least one of the photometric values which are output from the third device, on the basis of the subject region information; and a fifth device for calculating an optimal exposure value on the basis of the at least one, selected by the fourth device, of the photometric values.Type: GrantFiled: July 29, 1999Date of Patent: December 26, 2000Assignee: Minolta Co., Ltd.Inventors: Motoshi Yamaguchi, Koutaro Kawabe, Reiji Seki, Akihiko Fujino
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Patent number: 6137958Abstract: In a camera having a camera body part and a lens barrel part, an optical filter arranged to be rotatable around an axis located inside a lens optical path derived from the lens barrel part (for example, around an axis substantially parallel with an optical axis of the lens barrel part), and a filter rotating part having a drive source (for example, an electric motor) for rotating the optical filter are contained in the camera body part.Type: GrantFiled: May 3, 1999Date of Patent: October 24, 2000Assignee: Canon Kabushiki KaishaInventor: Yasuhiro Toyoda
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Patent number: 6101333Abstract: A method and apparatus are disclosed whereby generally matched exposures for at least first and second photoresponsive materials generally concurrently can be obtained, wherein the first photoresponsive material is more photoresponsive than the second.Type: GrantFiled: August 12, 1998Date of Patent: August 8, 2000Assignee: Polaroid CorporationInventors: Julian G. Bullitt, William T. Plummer, Jon Van Tassell, George D. Whiteside
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Patent number: 6091903Abstract: A macro lens system includes a positive first lens group, an aperture and a negative second lens group arranged in the order from an object side. The lens groups are driven to move along an optical axis for focusing. When the lens groups are driven, a full-opening diameter of the aperture is changed such when the lens groups is moved toward the object side to focus on a closer object, the full-opening diameter is increased.Type: GrantFiled: December 4, 1998Date of Patent: July 18, 2000Assignee: Asahi Kogaku Kabushiki KaishaInventors: Masayuki Murata, Takayuki Ito
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Patent number: 5987265Abstract: A photometry device of a camera has a photometry circuit which measures the luminance value of the object field, a colorimetry circuit which measures the color balance of the object field, and a scene discrimination unit which discriminates the scene on the basis of the output from the colorimetry circuit. The device calculates the proper exposure value of the object field on the basis of the outputs from the photometry circuit and scene discrimination unit. Scene discrimination is preferably made using photographing mode information, photographing distance information, or current time information to improve discrimination accuracy.Type: GrantFiled: March 10, 1998Date of Patent: November 16, 1999Assignee: Nikon CorporationInventor: Hiroyuki Iwasaki
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Patent number: 5960217Abstract: In a wide range focusing camera, a cooperating engagement members are provided in moveable parts of a focusing mechanism and an aperture opening selecting mechanism so as to force the latter into selecting a smaller one of the aperture opening areas when the focusing mechanism is actuated into moving the lens to the position suitable for a close range shot. At the same time, a strobe light is enabled. Thus, the focal depth can be increased, and a clear picture of a close range object can be taken without regard to the condition under which the object is placed in relation with the surrounding objects. Also, a three-dimensional object having a depth can be photographed at close range with a satisfactory result. Because a number of settings required for such close-up shots are instantaneously set either manually by hand or automatically by an auto-focusing mechanism, it is possible even for an inexperienced photographer to take clear pictures of objects at close range.Type: GrantFiled: November 11, 1997Date of Patent: September 28, 1999Assignee: Goko International CorporationInventor: Tadashi Goto
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Patent number: 5926287Abstract: An imaging device according to the present invention has: a photometric circuit that detects a brightness of a photographic subject based on a light flux from the photographic subject that passes through a photographic lens; an exposure calculation circuit that calculates an aperture value and a shutter speed based on the detected brightness of the photographic subject; an imaging element that converts the light flux from the photographic subject received on each photo-electric element to an electric signal and outputs the electric signal, the imaging element having a plurality of the photo-electric elements and a micro-lens in which each of micro-lens elements is arranged facing to each of the photo-electric elements in order to converge the light flux from the photographic subject to a light receiving surface of each of the photo-electric elements; and a correction circuit that corrects the aperture value calculated by the exposure calculation circuit so that a signal level of the electric signal of the ligType: GrantFiled: August 17, 1995Date of Patent: July 20, 1999Assignee: Nikon CorporationInventors: Masahiro Suzuki, Tadashi Ohta, Koichiro Kawamura
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Patent number: 5848303Abstract: The camera has an enlarged macro photographic range and the control method for the camera controls the diaphragm, enlarges the photographic range and takes the photograph of the object a the flash, so that a photograph having a suitable exposure can be obtained. The camera includes a switch block, a motor driving circuit, a micro controller, an automatic distance measuring circuit, a brightness measuring circuit and a strobo.Type: GrantFiled: March 24, 1997Date of Patent: December 8, 1998Assignee: Samsung Aerospace Industries, Inc.Inventors: Jong-kyo Jeong, Bon-jeong Goo
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Patent number: 5771408Abstract: A fixed focus camera is arranged to shorten the minimum object distance for shooting by moving a lens section to a hyperfocal distance position. The camera is arranged to mount the objective lens system and the diaphragm member on the same tube, the lens system being formed to provide fixed focus, the diaphragm member being provided with a rotating member which is rotated to reduce light from the lens system, and to connect the tube to the body with a helicoid screw so that the rotation of the tube opens and closes the diaphragm member, and moves the lens system back and forth. Then, when the diaphragm opening is reduced by the rotations of the tube, the objective lens system is moved forward to a position where the subject is captured at a hyperfocal distance. This enables it to perform shooting at a hyperfocal distance, whereby the minimum object distance for shooting can be shortened when the diaphragm opening is reduced.Type: GrantFiled: May 27, 1997Date of Patent: June 23, 1998Assignee: Fuji Photo Optical Co., Ltd.Inventor: Shigeo Mizukawa
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Patent number: 5710948Abstract: A camera is equipped with an integral color temperature measurement mechanism. The color temperature measurement mechanism measures the color temperature of the light source illuminating the subject field and a display mechanism displays the color temperature information based on output from the color temperature measurement mechanism. The camera also includes a system that determines what kind of filter is recommended based on the output of the color temperature measurement mechanism and a display mechanism that displays the output of the filter determination.Type: GrantFiled: February 3, 1995Date of Patent: January 20, 1998Assignee: Nikon CorporationInventor: Tadao Takagi
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Patent number: 5625430Abstract: A photographic camera system includes a photographic camera that can successively expose a photographic film in different frame sizes and an automatic printer for automatically printing the processed photographic film exposed with those different frame sizes. The camera varies the width of an exposure opening in the camera body in the film-feed direction and the film is fed a length corresponding to the width of the exposure opening. The photographic camera records an exposure opening position signal indicative of the size of the exposure opening on the photographic film, and the automatic printer automatically prints the photographic film using the exposure opening position signal detected from the photographic film.Type: GrantFiled: November 2, 1994Date of Patent: April 29, 1997Assignee: Sony CorporationInventors: Takahiko Saito, Akira Nakanishi, Shunzi Obayashi, Kyoji Genda, Hideki Toshikage
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Patent number: 5602614Abstract: A camera includes a distance detecting device arranged to detect a distance from the camera to an object to be photographed and to output distance information, a flash amount deciding part arranged to decide an amount of flash emission on the basis of the distance information from the distance detecting device, and an aperture value deciding part arranged to decide an aperture value to be used at the time of starting flash emission on the basis of the amount of flash emission.Type: GrantFiled: June 7, 1995Date of Patent: February 11, 1997Assignee: Canon Kabushiki KaishaInventors: Masanori Ohtsuka, Takanobu Tsunemiya, Yuuichi Matsuda