Patents by Inventor Hirohiko Ina
Hirohiko Ina has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 9182576Abstract: The present invention provides an image pickup lens with a large focal depth from the center to the outer part of an image plane formed on an image sensor and capable of maintaining its focal depth within a practical range and thus suppressing a decline in the resolution. An image pickup lens 7 includes, in order from the object side to the image plane side, an aperture stop 5, a first lens 1 that is a biconvex lens having positive power, a second lens 2 that is a meniscus lens having negative power and whose lens surface facing the object side is convex, a third lens 3 that is a meniscus lens having positive power and whose lens surface facing the object side is concave, and a fourth lens 4 that is a biconcave lens having negative power. The image pickup lens 7 includes a multifocal lens on the lens surface of the first lens 1 facing the object side. D and Ymax satisfy the following conditional expression (1): 0?D/Ymax?0.Type: GrantFiled: February 1, 2011Date of Patent: November 10, 2015Assignee: Panasonic Intellectual Property Management Co. Ltd.Inventors: Takumi Iba, Takashi Kitamura, Masatoshi Yamashita, Hirohiko Ina
-
Lens drive device, image-capturing device, and electronic apparatus with shape memory alloy actuator
Patent number: 8692929Abstract: An image-capturing device includes a detector which detects that a resistance value of an actuator, made of shape memory alloy, is maintained within a predetermined range. The image-capturing device moves a lens step by step from a place corresponding to a first field in order to obtain image data from each one of the fields provided in a focus region. The image-capturing device also calculates a target place, where the lens should be finally positioned, by using the obtained image data, and then positions the lens at the calculated target place. The foregoing structure allows obtaining reliable and stable data.Type: GrantFiled: March 5, 2010Date of Patent: April 8, 2014Assignee: Panasonic CorporationInventors: Kazuhiro Hata, Hirohiko Ina -
Patent number: 8339051Abstract: The electronic flash unit disclosed comprises: a transformer (14) to vary voltages of a power supply; an accumulator (16) composed of a main capacitor (17) to charge an electric energy supplied from the transformer (14); a lamp unit (4) provided with a flashlamp (20), set inside of a reflector (19), that flashes by discharging of energy storages in the main capacitor (17) upon applying a voltage on a trigger terminal (21); and a trigger circuit (10) to generate the voltage to apply on the trigger terminal (21), wherein at least the lamp unit (4) is coated with an insulation material.Type: GrantFiled: March 12, 2007Date of Patent: December 25, 2012Assignee: Panasonic CorporationInventors: Hirohiko Ina, Arata Sakamoto, Shohei Uno, Toshinori Maki, Katsumi Horinishi, Naoyuki Furutsuka, Hajime Mitsui, Kazue Nakagawa, Katsuji Ishikawa, Hisashi Ogura, Mitsuo Fuke, Katsunori Kawabata, Takashi Umehara, Katsushi Sumisaki
-
Publication number: 20120307135Abstract: The present invention provides an image pickup lens with a large focal depth from the center to the outer part of an image plane formed on an image sensor and capable of maintaining its focal depth within a practical range and thus suppressing a decline in the resolution. An image pickup lens 7 includes, in order from the object side to the image plane side, an aperture stop 5, a first lens 1 that is a biconvex lens having positive power, a second lens 2 that is a meniscus lens having negative power and whose lens surface facing the object side is convex, a third lens 3 that is a meniscus lens having positive power and whose lens surface facing the object side is concave, and a fourth lens 4 that is a biconcave lens having negative power. The image pickup lens 7 includes a multifocal lens on the lens surface of the first lens 1 facing the object side. D and Ymax satisfy the following conditional expression (1): 0?D/Ymax?0.Type: ApplicationFiled: February 1, 2011Publication date: December 6, 2012Applicant: PANASONIC CORPORATIONInventors: Takumi Iba, Takashi Kitamura, Masatoshi Yamashita, Hirohiko Ina
-
Patent number: 8070304Abstract: A lens unit including a first lens including a first lens section having a first optical axis along which light passes, and a second lens. The second lens includes a second lens section having a second optical axis along which light passes, and a flange provided at the outer circumferential part of the second lens section and having a surface opposed to the first lens, and a tubular section extending from the flange in the direction of the second optical axis and having an inner side face opposed to the second lens section. The first lens is fitted in the tubular section and in contact with the inner side face of the tubular section of the second lens. The tubular section of the second lens has a plurality of protrusions protruding in the direction of the second optical axis and a plurality of valleys provided between the protrusions.Type: GrantFiled: January 13, 2006Date of Patent: December 6, 2011Assignee: Panasonic CorporationInventors: Kouichiro Matsuoka, Nobuo Yamashita, Hirohiko Ina, Nami Nagamori, Masatoshi Yamashita
-
Publication number: 20110128434Abstract: An image-capturing device includes a detector which detects that a resistance value of an actuator, made of shape memory alloy, is maintained within a predetermined range. The image-capturing device moves a lens step by step from a place corresponding to a first field in order to obtain image data from each one of the fields provided in a focus region. The image-capturing device also calculates a target place, where the lens should be finally positioned, by using the obtained image data, and then positions the lens at the calculated target place. The foregoing structure allows obtaining reliable and stable data.Type: ApplicationFiled: March 5, 2010Publication date: June 2, 2011Applicant: Panasonic CorporationInventors: Kazuhiro Hata, Hirohiko Ina
-
Patent number: 7869148Abstract: An imaging apparatus includes of a lens holder arranged concentrically with an imaging element; a lens barrel having an imaging lens removably inserted from the leading end section side of the lens holder; a cover removably fitted at the leading end section of the lens holder; and a cam mechanism section arranged on the barrel, the lens holder and the cover so that the barrel turns around the optical axis to the imaging element and that the barrel moves in the optical axis direction. The cam mechanism section includes a first cam surface formed on the inner circumference surface of the lens holder; a cam protruding section formed on the outer circumference surface of the lens barrel; and a second cam surface formed on the inner surface of the cover. The cam mechanism section smoothly turns the barrel around the optical axis and moves the barrel in the optical axis direction.Type: GrantFiled: March 27, 2008Date of Patent: January 11, 2011Assignee: Panasonic CorporationInventors: Masaki Tanabe, Hirohiko Ina
-
Publication number: 20100103541Abstract: An imaging apparatus is composed of a lens holder (3) arranged concentrically with an imaging element (2); a lens barrel (4) which has an imaging lens removably inserted from the leading end section side of the lens holder (3); a cover (6) removably fitted at the leading end section of the lens holder (3); and a cam mechanism section arranged on the lens barrel (4), the lens holder (3) and the cover (6) so that the lens barrel (4) turns around the optical axis to the imaging element (2) and that the lens barrel moves in the optical axis direction by such turning. The cam mechanism section is composed of a first cam surface (10a) formed on the inner circumference surface of the lens holder (3); a cam protruding section (10b) formed on the outer circumference surface of the lens barrel (4); and a second cam surface (10c) formed on the inner surface of the cover (6). The cam mechanism section smoothly turns the lens barrel (4) around the optical axis and moves the lens barrel in the optical axis direction.Type: ApplicationFiled: March 27, 2008Publication date: April 29, 2010Applicant: PANASONIC CORPORATIONInventors: Masaki Tanabe, Hirohiko Ina
-
Patent number: 7652434Abstract: The electronic flash unit disclosed comprises: a transformer (14) to vary voltages of a power supply; an accumulator (16) composed of a main capacitor (17) to charge an electric energy supplied from the transformer (14); a lamp unit (4) provided with a flashlamp (20), set inside of a reflector (19), that flashes by discharging of energy storages in the main capacitor (17) upon applying a voltage on a trigger terminal (21); and a trigger circuit (10) to generate the voltage to apply on the trigger terminal (21), wherein at least the lamp unit (4) is coated with an insulation material.Type: GrantFiled: November 28, 2002Date of Patent: January 26, 2010Assignee: Panasonic Photo & Lighting Co., Ltd.Inventors: Hirohiko Ina, Arata Sakamoto, Shohei Uno, Toshinori Maki, Katsumi Horinishi, Naoyuki Furutsuka, Hajime Mitsui, Kazue Nakagawa, Katsuji Ishikawa, Hisashi Ogura, Mitsuo Fuke, Katsunori Kawabata, Takashi Umehara, Katsushi Sumisaki
-
Publication number: 20090310223Abstract: A camera lens unit includes a first lens including a first lens section having a first optical axis along which light runs, and a second lens. The second lens includes a second lens section having a second optical axis along which the light runs, a flange provided on an outer circumference of the second lens and having a surface facing the first lens, and a cylindrical section having an inner circumference extending from the flange along the second optical axis. The inner circumference of the cylindrical section faces the second lens section. The first lens contacts the inner circumference of the cylindrical section of the second lens and is engaged into the cylindrical section. The cylindrical section of the second lens includes plural protrusions protruding along the second optical axis, such that plural crenels are provided between the protrusions and have heights along the second optical axis lower than the protrusions. The camera lens unit prevents diffuse reflection caused by unnecessary incident light.Type: ApplicationFiled: January 13, 2006Publication date: December 17, 2009Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Kouichiro Matsuoka, Nobuo Yamashita, Hirohiko Ina, Nami Nagamori, Masatoshi Yamashita
-
Publication number: 20070170869Abstract: The electronic flash unit disclosed comprises: a transformer (14) to vary voltages of a power supply; an accumulator (16) composed of a main capacitor (17) to charge an electric energy supplied from the transformer (14); a lamp unit (4) provided with a flashlamp (20), set inside of a reflector (19), that flashes by discharging of energy storages in the main capacitor (17) upon applying a voltage on a trigger terminal (21); and a trigger circuit (10) to generate the voltage to apply on the trigger terminal (21), wherein at least the lamp unit (4) is coated with an insulation material.Type: ApplicationFiled: March 12, 2007Publication date: July 26, 2007Applicant: PANASONIC PHOTO & LIGHTING CO., LTD.Inventors: Hirohiko Ina, Arata Sakamoto, Shohei Uno, Toshinori Maki, Katsumi Horinishi, Naoyuki Furutsuka, Hajime Mitsui, Kazue Nakagawa, Katsuji Ishikawa, Hisashi Ogura, Mitsuo Fuke, Katsunori Kawabata, Takashi Umehara, Katsushi Sumisaki
-
Publication number: 20050007030Abstract: The electronic flash unit disclosed comprises: a transformer (14) to vary voltages of a power supply; an accumulator (16) composed of a main capacitor (17) to charge an electric energy supplied from the transformer (14); a lamp unit (4) provided with a flashlamp (20), set inside of a reflector (19), that flashes by discharging of energy storages in the main capacitor (17) upon applying a voltage on a trigger terminal (21); and a trigger circuit (10) to generate the voltage to apply on the trigger terminal (21), wherein at least the lamp unit (4) is coated with an insulation material.Type: ApplicationFiled: November 28, 2002Publication date: January 13, 2005Inventors: Hirohiko Ina, Arata Sakamoto, Shohei Uno, Toshinori Maki, Katsumi Horinishi, Naoyuki Furutsuka, Hajime Mitsui, Kazue Nakagawa, Katsuji Ishikawa, Hisashi Ogura, Mitsuo Fuke, Katsunori Kawabata, Takashi Umehara, Katsushi Sumisaki
-
Publication number: 20020081111Abstract: In a method and camera, a latent image of a subject is captured on a filmstrip during a film exposure time interval. The film exposure time interval has a flash portion and a non-flash portion. The subject is strobe-illuminated during the flash portion. A flash electronic image is captured during the flash portion. A non-flash electronic image is captured during the non-flash portion. The flash and non-flash electronic images are combined to provide a fill-flash electronic image.Type: ApplicationFiled: December 22, 2000Publication date: June 27, 2002Inventors: Hirohiko Ina, Hisanori Hoshikawa
-
Patent number: 6298198Abstract: In a motion verifying photography method, a latent image is captured during a film exposure time interval. The film exposure time interval has an initial portion, a middle portion, and a final portion. A first digital image is captured during the initial portion of the film exposure time interval. A second digital image is captured during the final portion of the film exposure time interval. A representation of both electronic images is visualized. A motion verifying camera has an exposure frame, an electronic array imager spaced from the exposure frame, an optical system directing light along a first path to the exposure frame and along a second path to the imager. Shutters are disposed on both paths. A shutter release connects to an actuator and responsive to the actuator, momentarily opens the film shutter for a film exposure time interval having an initial portion, a middle portion, and a final portion.Type: GrantFiled: January 28, 2000Date of Patent: October 2, 2001Assignee: Eastman Kodak CompanyInventors: Hirohiko Ina, Hisanori Hoshikawa, David L. Funston
-
Patent number: 5028945Abstract: Electric zoom camera wherein zooming speed is not influenced even by drop of power source voltage, by driving its zooming electric motor by an electric pulse current such that the period (T.sub.0, T.sub.1, T.sub.2, - - -) is defined by present period of a lens position signal "b" from a lens position detector (2) which consists of a photo-interrupter and a photo-coupler, and each of the period length is divided into a first portion (Po) (off-portion) wherein motor current is off and a second portion (Pd) (duty portion) wherein the motor current is on, the length of the first portion (Po) being adjusted responding to the present zooming speed obtained from the lens position signal outputted from the lens position detector (2).Type: GrantFiled: September 18, 1990Date of Patent: July 2, 1991Assignee: West Electric Company, Ltd.Inventors: Toshitsugu Kashihara, Hirohiko Ina, Toshihiko Taniguchi
-
Patent number: 4584477Abstract: In a method of distance measuring and an optical distance measuring apparatus, a pulse-modulated infrared light beam is irradiated to an object to produce a reflected light beam, which is then received by a resonance circuit, and intensity of output of the resonance circuit is measured, wherein the modulation of frequency is sweepingly varied within a predetermined narrow frequency range; thereby, even when the circuit constants of the resonance circuit varies due to temperature change and so on, the distance measurement result is not affected, and stable measurement of a long distance is possible.Type: GrantFiled: November 28, 1984Date of Patent: April 22, 1986Assignee: West Electric Company, Ltd.Inventors: Tsunemi Yoshino, Toshihiko Taniguchi, Hirohiko Ina
-
Patent number: 4393335Abstract: In an electronic flash device of the type in which depending upon the exposure conditions an electronic flash lamp converts into light the energy stored on a main flash capacitor or the energies stored not only on the main flash capacitor but also on an auxiliary flash capacitor, a switching element which is turned on or off so as to permit or interrupt the discharge of the auxiliary flash capacitor is controlled by a simplified control circuit comprising a switching element control circuit which delivers a low voltage supplied from a low-voltage power source to the switching element as a turn-on signal and a detection circuit which controls the switching element control circuit in response to the exposure conditions such as a distance to a subject or a selected aperture. Therefore, an inversion circuit which is used in the prior art electronic flash devices can be eliminated.Type: GrantFiled: April 28, 1981Date of Patent: July 12, 1983Assignee: West Electric Co., Ltd.Inventors: Shinji Hirata, Hirohiko Ina