1
Mitsujiro Konno, Shinya Matsumoto, Toshikazu Takayama, Takayuki Suzuki, Akira Hasegawa: Optical system for endoscopes. Olympus Optical, Cushman Darby & Cushman IP Group of Pillsbury Madison & Sutro, August 11, 1998: US05793539 (62 worldwide citation)

An optical system for endoscopes which comprises a stop having a variable aperture and is configured so as to produce spherical aberration for preventing an image surface thereof from being shifted in a direction opposite to the object side by narrowing the aperture of the stop, whereby the optical ...


2
Mitsujiro Konno, Akira Hasegawa: Endoscope apparatus. Olympus Optical, Cushman Darby & Cushman IP Group of Pillsbury Madison & Sutroo, March 4, 1997: US05608451 (61 worldwide citation)

An endoscope apparatus includes an optical system for forming an image of an object; a solid-state image sensor for receiving the image formed by the optical system; an illuminating device for irradiating the object with illuminating light; a light control device for changing the brightness of the i ...


3
Susumu Takhashi, Tsutomu Igarashi, Atsushi Miyazaki, Kimihiko Nishioka, Akira Hasegawa, Masahiro Chiba, Koji Takamura: Endoscope. Olympus Optical, Cushman Darby & Cushman, April 10, 1990: US04916534 (55 worldwide citation)

In order to enable to sufficiently deflect the viewing direction for a distal end having an end surface substantially perpendicular to the optical axis of an objective optical system and minimize aberrations produced due to the deflecting action, the objective optical system for endoscopes comprises ...


4
Akira Hasegawa, Yoshinori Shimizu, Masayoshi Mizuno, Takayuki Ishida: Video data decoding apparatus and method and video signal reproduction apparatus and method. Sony Corporation, William S Frommer, Glenn F Savit, Frommer Lawrence & Haug, August 28, 2001: US06282320 (49 worldwide citation)

A DVD reproduction apparatus includes a video decoder capable of outputting smooth video data during forward or backward high-speed reproduction. The video decoder is intermittently supplied with data in VOBU (Video Object Unit) units. According to control by a controller, the decoder outputs the de ...


5
Makoto Tomioka, Akira Hasegawa, Shinya Matsumoto, Takayuki Suzuki: Light source device for endoscopes. Olympus Optical, Pillsbury Madison & Sutro, November 30, 1999: US05993037 (48 worldwide citation)

A light source device for endoscopes includes a light source for emitting white light containing the components of light belonging to a visible region and wavelength bands other than the visible region; at least, a rotary color separating filter on a field sequential system; and an infrared cutoff f ...


6
Takeshi Yokoi, Akira Hasegawa, Shinya Matsumoto, Takayuki Suzuki, Hidetake Segawa, Hironobu Takizawa: Capsule endoscope. Olympus Corporation, Arnold International, Bruce Y Arnold, February 15, 2005: US06855111 (47 worldwide citation)

A capsule endoscope is provided with lighting means for illuminating the interior of a living body, an image pickup means for capturing an image of a site illuminated by the lighting means, and a transparent cover which houses the image pickup means and the lighting means within a sealed, cylindrica ...


7
Makoto Tomioka, Akira Hasegawa, Takayuki Suzuki, Yumi Ikeda: Light source for endoscopes, having different numerical-aperture light collection system. Olympus Optical, Pillsbury Madison & Sutro, October 31, 2000: US06139175 (47 worldwide citation)

A light source device for endoscopes includes a light source; a condenser lens unit for collecting light beams from the light source; a light guide for receiving the light beams collected through the condenser lens unit into its entrance end face to transmit them to its exit end face; and a reflecti ...


8
Hirokazu Goto, Akira Hasegawa, Koji Ohtsuka, Takashi Kato: Hall-effect current detector. Sanken Electric, Woodcock Washburn, January 11, 2005: US06841989 (43 worldwide citation)

A current detector comprising a current-path conductor assembly and a Hall generator assembly. The current-path conductor assembly includes a sheet-metal current-path conductor and a plastic conductor holder molded in one piece therewith. The Hall generator assembly includes a Hall generator in the ...


9
Fumio Hamano, Shigeru Oho, Takeshi Hirayama, Akira Hasegawa: Data transmission system having a communication control computer for controlling communication between a communication interface module and terminal devices. Hitachi, Antonelli Terry Stout & Kraus, April 20, 1999: US05896418 (42 worldwide citation)

In a data transmission system having a data processing unit (MPU) and a communication control unit (CIM) and capable of transmitting a data to a local control unit (LCU) in a half duplex mode, the data processing unit receives the data by an interruption based on an end of data reception signal supp ...


10
Yoshikazu Tohjoh, Akira Hasegawa, Tomoaki Sato: Endoscope apparatus. Olympus Optical, Ostrolenk Faber Gerb & Soffen, August 15, 1989: US04856495 (42 worldwide citation)

A first optical adapter is to be detachably mounted on the distal end of an endoscope having an observation optical system and an illumination optical system, in which an aperture diaphragm which has been disposed at a given position within the observation optical system of the endoscope in the past ...