Patents Assigned to Olympus Optical Company Ltd.
  • Movable reflecting mirror for single lens reflex camera
    Patent number: 4392729
    Abstract: A movable reflecting mirror for single lens reflex camera is adapted to permit photometry by utilizing part of the light from an object being photographed which has been transmitted through the reflecting mirror. A transmitting area is formed in part of the reflector of the mirror in a manner such that light incident on the reflecting mirror in the region of the transmitting area and reflected by the rear surface of the reflecting mirror is reflected again by the rear surface of the reflector.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: July 12, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventor: Katsuhiko Tsunefuji
  • Cleaning apparatus for endoscope
    Patent number: 4391287
    Abstract: A cleaning apparatus for endoscope is adapted to clean an endoscope with a cleaning liquid such as cleaning water, liquid detergent or the like. A liquid disinfectant circulating mechanism is provided which maintains a liquid disinfectant in circulation between a cleaning vessel and a tank of liquid disinfectant to disinfect the endoscope after the cleaning liquid has been drained. Apparatus is provided for supplying an antifoaming agent to the mechanism for effectively preventing a foaming from occurring in the presence of any residue of detergent.
    Type: Grant
    Filed: March 5, 1981
    Date of Patent: July 5, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventor: Katunaga Konoshima
  • Photometry power supply for automatic electronic flash
    Patent number: 4389596
    Abstract: A photometry power supply for automatic electronic flash comprises an impedance element through which part of the charge stored across a main capacitor of the electronic flash discharges to develop a voltage thereacross which may be used as a power supply for a photometric circuit.
    Type: Grant
    Filed: November 9, 1981
    Date of Patent: June 21, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventors: Isao Kondo, Hiroaki Nakamura
  • Selective ion sensitive electrode and method of making it
    Patent number: 4388165
    Abstract: A selective ion sensitive electrode is so constructed that an ion exchanger sensitive to a specific ion is formed on a metal electrode, an electric conductive resin electrode or a chlorinated metal electrode to which a signal wire is connected so as to maintain a stable electric connection between the signal wire and the ion exchanger over a long period of time. A layer of a silane coupling agent is used between the electrode member and ion exchanger.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: June 14, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventors: Kiyozo Koshiishi, Noriaki Ono, Takashi Kamiyama, Yoshimi Kato
  • Multiple electronic flash controlling apparatus
    Patent number: 4385818
    Abstract: An electronic flash assembly including a plurality of flash units for illuminating an object, one of which determines reflected light from the object being photographed and also produces a flashlight interrupting, control signal when a proper amount of illumination has been given. The control signal is supplied to all the flash units through an external control terminal, to interrupt the emission of flashlight from the plurality of flash units.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: May 31, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventors: Isao Kondo, Osamu Kawarada
  • Apparatus for changing illumination optics of a microscope
    Patent number: 4384200
    Abstract: An apparatus for changing illumination optics is provided for use in a microscope including a plurality of illumination optics having different values of magnification. A photometric, light receiving element is disposed in a marginal area of an imaging surface of an objective lens, and an output from the photometric element is determined as the illumination optics are sequentially changed. A matching condition between the objective lens and the illumination optics is detected in accordance with the value determined, and that one of illumination optics is selected which represents the best match.
    Type: Grant
    Filed: March 5, 1981
    Date of Patent: May 17, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventor: Akio Taira
  • Magnet roll developing unit
    Patent number: 4377334
    Abstract: A developing unit comprises a guide vane mounted on a portion of the housing which defines a developing opening and disposed for contact with the free end of a developer brush which is formed by a conveying magnetic pole, and a vent formed in the housing at a location removed from the opening. The guide vane cooperates with the brush which moves during the rotation of a non-magnetic sleeve to provide an air pump action, which draws the air containing the toner in suspension into the closed housing of the developing unit from the region of the opening while the vent acts to reduce the internal air pressure within the housing which tends to increase as a result of the air pump action.
    Type: Grant
    Filed: October 29, 1980
    Date of Patent: March 22, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventor: Masaji Nishikawa
  • Apparatus for conveying copy sheet for electrophotographic copying machine
    Patent number: 4377229
    Abstract: A conveying apparatus includes a plurality of pairs of conveying rollers which are disposed for abutment against each other for transporting a copy sheet carrying an unfixed toner image thereon toward a fixing unit. A cleaning member is disposed for abutment against those rollers which are adapted to contact the toner image to clean them and to charge them triboelectrically to the same polarity as the toner.
    Type: Grant
    Filed: September 8, 1980
    Date of Patent: March 22, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventors: Kiyoshi Miyashita, Tatuo Takizawa, Kazuo Sugawa, Masaji Nishikawa
  • Motor control device
    Patent number: 4376914
    Abstract: A motor control device is disclosed. The device comprises an electric motor, a first counter for counting clock signals having a certain frequency, means for resetting the first counter by an output corresponding to a rotational frequency of the motor and storing a counted content of the first counter immediately before the reset, a second counter for counting clock signals having a certain frequency higher than the above clock signal, and means for comparing the content of the first counter with that of the second counter, resetting the second counter by a coincidence of both the contents, generating output signals from the reset the second counter to the reset of the first counter, and controlling a rotational frequency of the motor by the output signals.
    Type: Grant
    Filed: March 10, 1981
    Date of Patent: March 15, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventor: Kenji Kimura
  • Ultrasonic diagnosis system assembled into endoscope
    Patent number: 4375818
    Abstract: An ultrasonic diagnosis system includes an ultrasonic wave transmitting and receiving transducer which is rockably disposed within the distal end of a portion of an endoscope which is adapted to be inserted into a coeliac cavity. The transducer emits ultrasonic wave from within the coeliac cavity and directs it toward internal tissues of a physical body, thereby enabling an ultrasonic tomographic image to be obtained. The endoscope also includes an observation optical system which permits the location of the ultrasonic transducer within the coeliac cavity to be visually recognized.
    Type: Grant
    Filed: February 13, 1980
    Date of Patent: March 8, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventors: Toshitaka Suwaki, Otaro Ando
  • Film end detector for use in automatic film winding camera
    Patent number: 4373796
    Abstract: A film end detector for use in automatic film winding camera comprises a rotary disc having a light transmitting area and mounted on the drive shaft of a motor which is used to wind up a film automatically. The rotation of the disc is monitored by a combination of a light source and light receiving, photoelectric transducer element which are disposed to monitor the passage of light through the light transmitting area, thus detecting a film end. Logic circuits examine the output of the photoelectric transducer element at predetermined intervals to ascertain the completion or failure of completion of a normal film-winding operation.
    Type: Grant
    Filed: October 16, 1980
    Date of Patent: February 15, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventors: Tsuyoshi Matsuura, Hiroshi Fujiwara, Mamoru Aihara, Yutaka Takahashi, Yoshio Nakajima
  • Photometric assembly for camera
    Patent number: 4368965
    Abstract: A photometric assembly of the reflective photometry type is provided in which light passing through a taking lens and reflected by a blind surface of a shutter or a film surface is directed by a reflecting member so as to be incident on a photometric, photoelectric transducer element disposed on a printed circuit board. A shield member is disposed to prevent the direct incidence of the reflected light from the blind surface or the film surface onto the transducer element.
    Type: Grant
    Filed: April 13, 1981
    Date of Patent: January 18, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventor: Kazuyuki Nemoto
  • Tape cassette
    Patent number: 4368497
    Abstract: A tape cassette includes liner sheets which are flexed toward the inner surface of the adjacent cassette half in the region around openings, formed therein to permit tape hub drive shafts to extend therethrough, a central region adjacent to the front edge and at the opposite ends of the front edge, thereby allowing the liner sheets to control the position of a magnetic tape to stabilize the tape running and to prevent a deformed tape winding.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: January 11, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventor: Hideo Shirako
  • Automatic camera
    Patent number: 4367026
    Abstract: In an automatic camera, as a film roll is loaded, the film is once wound up to its terminal end in response to a signal which indicates the closure of a rear lid of the camera. During such time, the number of film perforations is counted to allow the number of film frames which are available to take pictures to be known before any pictures are taken. A display is provided which is decremented as the frames are exposed and the film is wound back, thus indicating the number of film frames remaining.
    Type: Grant
    Filed: August 14, 1981
    Date of Patent: January 4, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventors: Katumi Terada, Yukio Nakajima
  • Temperature controller for photographic heat fixing unit
    Patent number: 4367037
    Abstract: A temperature controller for photographic heat fixing unit which may be used in an electrophotographic copying apparatus includes a main temperature for detecting the temperature of a heater or heaters in the fixing unit and an auxiliary temperature sensor for detecting the temperature of a marginal member spaced from the heater or of a record sheet. The temperature level of the fixing unit is controlled in accordance with outputs from the both temperature sensors.
    Type: Grant
    Filed: April 1, 1981
    Date of Patent: January 4, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventor: Masaji Nishikawa
  • Exposure control circuit for camera of TTL reflective photometry type
    Patent number: 4367022
    Abstract: An exposure control circuit for camera of TTL reflective photometry type includes a shutter blind of a lower reflectivity than that of a film. The circuit is arranged such that until a given proportion of the film surface becomes exposed as a result of running of a first shutter blind, a correction semiconductor element is rendered conductive to supply a current, which represents a magnified version of minimal current from a photoelectric transducer element when reflected light from the surface of a first blind is incident on the transducer element, the current being supplied to an integrating operation. However, after the given proportion of the film surface has been exposed to increase the magnitude of the photocurrent, the correction semiconductor element is rendered non-conductive, thus allowing an integrating operation of only the photocurrent.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: January 4, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventor: Masafumi Yamasaki
  • Film suction mechanism for a camera
    Patent number: 4364653
    Abstract: A film suction mechanism for camera comprises a suction unit disposed within a camera body and connected to a suction path having an end opening formed in the camera body, and film suction openings or grooves formed in a rear lid of the camera and connected to a suction path having an end opening formed in the rear lid. The both end openings are connected together to complete the suction path in response to the closure of the rear lid.
    Type: Grant
    Filed: September 8, 1981
    Date of Patent: December 21, 1982
    Assignee: Olympus Optical Company Ltd.
    Inventor: Katumi Terada
  • Collator for use with copier
    Patent number: D268269
    Type: Grant
    Filed: October 9, 1980
    Date of Patent: March 15, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventor: Michio Imada
  • Copier stand
    Patent number: D268538
    Type: Grant
    Filed: September 19, 1980
    Date of Patent: April 5, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventor: Michio Imada
  • Endoscope
    Patent number: D269457
    Type: Grant
    Filed: December 24, 1980
    Date of Patent: June 21, 1983
    Assignee: Olympus Optical Company Ltd.
    Inventor: Koichiro Ishiwara