Patents by Inventor Osamu Kajino
Osamu Kajino 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).
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Patent number: 9323062Abstract: A split unit capable of providing a stereoscopic image having less laterality is provided. The split unit includes: a beam splitter which transmits first imaging light as a part of light incident on an incident surface of the beam splitter, and reflects second imaging light as another part of the light incident on the incident surface; and a reflecting member which reflects the second imaging light reflected by the beam splitter. At least one of a reflectance of the reflecting member and a beam splitting characteristic of the beam splitter is set based on the following formulae: T=d/(1+d) R=1?T where T (0?T?1) is a transmittance of the beam splitter, R (0?R?1) is a reflectance of the beam splitter, and d (0?d?1) is a reflectance of the reflecting member.Type: GrantFiled: December 16, 2014Date of Patent: April 26, 2016Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Yuji Nagaishi, Hiroaki Shimazaki, Kenjiro Tsuda, Takashi Masuno, Osamu Kajino
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Publication number: 20150098132Abstract: A split unit capable of providing a stereoscopic image having less laterality is provided. The split unit includes: a beam splitter which transmits first imaging light as a part of light incident on an incident surface of the beam splitter, and reflects second imaging light as another part of the light incident on the incident surface; and a reflecting member which reflects the second imaging light reflected by the beam splitter. At least one of a reflectance of the reflecting member and a beam splitting characteristic of the beam splitter is set based on the following formulae: T=d/(1+d) R=1?T where T (0?T?1) is a transmittance of the beam splitter, R (0?R?1) is a reflectance of the beam splitter, and d (0?d?1) is a reflectance of the reflecting member.Type: ApplicationFiled: December 16, 2014Publication date: April 9, 2015Inventors: Yuji NAGAISHI, Hiroaki SHIMAZAKI, Kenjiro TSUDA, Takashi MASUNO, Osamu KAJINO
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Patent number: 8797834Abstract: A disclosed objective lens includes: a lens having an entrance surface and an emission surface; and an anti-reflection coat formed on the emission surface, wherein a transmittance T1—0 [%] of the anti-reflection coat when an incident angle of a first laser beam having a first wavelength ?1 (390 nm??1?430 nm) is 0°, and the transmittance T1—40 [%] of the anti-reflection coat when the incident angle of the first laser beam is 40° satisfy 0.95?T1—0/T1—40?1.05, and a transmittance T2—0 [%] of the anti-reflection coat when an incident angle of a second laser beam having a second wavelength ?2 (630 nm??2?680 nm) is 0° and a transmittance T2—40 [%] of the anti-reflection coat when the incident angle of the second laser beam is 40° satisfy 0.85?T2—0/T2—40?0.97.Type: GrantFiled: May 31, 2011Date of Patent: August 5, 2014Assignee: Panasonic CorporationInventors: Fumitomo Yamasaki, Hiroshi Shiroiwa, Yoshiaki Komma, Junichi Asada, Osamu Kajino, Noriaki Terahara, Toshiyasu Tanaka
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Patent number: 8432782Abstract: An objective lens, an optical head, an optical disk apparatus and an information processing apparatus which can suppress deterioration of a focal spot caused by a drop in the diffraction efficiency. Inner and outer circumference areas converge a laser beam, out of laser beams having a wavelength ?1 which are diffracted by the inner and outer circumference areas, on a first information recording medium; the inner circumference area and a mid-circumference area converge a laser beam, out of the laser beams having a wavelength ?2 which are diffracted by the inner circumference area and the mid-circumference area, on a second information recording medium; and the diffraction efficiency of the laser beam having the wavelength ?2 is greater than the diffraction efficiency of the laser beam having the wavelength ?1.Type: GrantFiled: July 22, 2011Date of Patent: April 30, 2013Assignee: Panasonic CorporationInventors: Fumitomo Yamasaki, Kazuhiro Minami, Yoshiaki Komma, Junichi Asada, Osamu Kajino, Noriaki Terahara, Toshiyasu Tanaka
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Patent number: 8427928Abstract: An optical head 200 comprises: a light source 101 that emits a light beam; an objective lens 105 that condenses, in the form of converging light, the light beam emitted by the light source 101, onto an information recording medium; a cylindrical lens 115 onto which a reflected light beam that is reflected by the information recording medium is incident, and which generates astigmatism for forming a focus error signal; a light detector 120 that receives the reflected light beam passing through the cylindrical lens 115; and a holder 130 that holds the cylindrical lens 115 and the light detector 120. The holder 130 has a first main face and a second main face that extend in directions that intersect the optical axis of the reflected light beam. The cylindrical lens 115 is bonded to the first main face and the light detector 120 is bonded to the second main face.Type: GrantFiled: January 26, 2010Date of Patent: April 23, 2013Assignee: Panasonic CorporationInventors: Hideki Nakata, Kousei Sano, Takashi Haruguchi, Osamu Kajino
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Publication number: 20130064057Abstract: A disclosed objective lens includes: a lens having an entrance surface and an emission surface; and an anti-reflection coat formed on the emission surface, wherein a transmittance T1—0 [%] of the anti-reflection coat when an incident angle of a first laser beam having a first wavelength ?1 (390 nm??1?430 nm) is 0°, and the transmittance T1—40 [%] of the anti-reflection coat when the incident angle of the first laser beam is 40° satisfy 0.95?T1—0/T1—40?1.05, and a transmittance T2—0 [%] of the anti-reflection coat when an incident angle of a second laser beam having a second wavelength ?2 (630 nm??2?680 nm) is 0° and a transmittance T2—40 [%] of the anti-reflection coat when the incident angle of the second laser beam is 40° satisfy 0.85?T2—0/T2—40?0.97.Type: ApplicationFiled: May 31, 2011Publication date: March 14, 2013Inventors: Fumitomo Yamasaki, Hiroshi Shiroiwa, Yoshiaki Komma, Junichi Asada, Osamu Kajino, Noriaki Terahara, Toshiyasu Tanaka
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Patent number: 8238218Abstract: To provide an optical pickup and an optical information device, capable of obtaining excellent signal characteristics for an optical disk on and/or from which recording and/or reproducing are performed using a laser. The optical pickup includes an optical detector, a support holder for holding the optical detector, and an optical base for fixing the support holder. The support holder has at least two notches at its both ends, the optical base has convex portions corresponding to the notches of the support holder, the optical base and the support holder are fixed by photo-curable adhesives for bonding the convex portions and the support holder to each other, and the shortest distance between the side faces of the convex portions, which do not face each other, is equal to or less than the width of the support holder in the direction of right and left ends.Type: GrantFiled: July 13, 2011Date of Patent: August 7, 2012Assignee: Panasonic CorporationInventors: Toshiyasu Tanaka, Yoshiaki Komma, Kanji Wakabayashi, Fumitomo Yamasaki, Osamu Kajino
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Publication number: 20120182852Abstract: An objective lens, an optical head, an optical disk apparatus and an information processing apparatus which can suppress deterioration of a focal spot caused by a drop in the diffraction efficiency are provided.Type: ApplicationFiled: July 22, 2011Publication date: July 19, 2012Inventors: Fumitomo Yamasaki, Kazuhiro Minami, Yoshiaki Komma, Junichi Asada, Osamu Kajino, Noriaki Terahara, Toshiyasu Tanaka
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Patent number: 8213288Abstract: A deterioration of reproduction light is occurred by a laser drive current on which a high-frequency current is superimposed. The present invention, for example, is an optical information reproducing apparatus which irradiates a laser beam to an optical disc 1 and reads an information, the optical information reproducing apparatus includes a semiconductor laser 6 which generates the laser beam, a laser drive unit 7 which supplies a drive current on which a high-frequency current are superimposed to the semiconductor laser 6, a spindle motor 2 which drives the optical disc 1 and a control unit 5 which controls the laser drive unit 7 and the spindle motor 2, and the control unit 5 determines a parameter of the high-frequency current based on magnitude of a current on which the high-frequency current is to be superimposed.Type: GrantFiled: August 26, 2009Date of Patent: July 3, 2012Assignee: Panasonic CorporationInventors: Osamu Kajino, Hidenori Wada, Haruhisa Yagi
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Patent number: 8182093Abstract: An image projection apparatus according to the present invention includes a light source for outputting laser light and a mirror section for reflecting and projecting the laser light having been output from the light source, and displays an image with at least a portion of the projected laser light. The image projection apparatus includes a detection section for detecting at least a portion of the laser light returning from a projection direction of the laser light, and a calculation section for determining an image displayable region based on the detected light. The mirror section reflects at least a portion of the laser light returning from the projection direction of the laser light so as to be led into the detection section.Type: GrantFiled: September 21, 2006Date of Patent: May 22, 2012Assignee: Panasonic CorporationInventors: Akira Kurozuka, Hironori Tomita, Osamu Kajino, Hiroshi Obi, Masanari Mohri
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Patent number: 8149491Abstract: A scan unit according to the present invention is a scan unit including: a reflecting portion for reflecting laser light; and an enclosure portion having a movable object enclosed within a hollow, characterized in that the movable object moves in accordance with an angular velocity of the scan unit, thereby changing a reflecting state of the reflecting portion with respect to the laser light. In one embodiment, the movable object moves in accordance with the angular velocity of the scan unit to cover at least a part of the reflecting portion. In one embodiment, the movable object moves in accordance with the angular velocity of the scan unit to deform the reflecting portion.Type: GrantFiled: February 8, 2007Date of Patent: April 3, 2012Assignee: Panasonic CorporationInventors: Hiroshi Obi, Hironori Tomita, Akira Kurozuka, Osamu Kajino
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Publication number: 20110267934Abstract: To provide an optical pickup and an optical information device, capable of obtaining excellent signal characteristics for an optical disk on and/or from which recording and/or reproducing are performed using a laser. The optical pickup includes an optical detector, a support holder for holding the optical detector, and an optical base for fixing the support holder. The support holder has at least two notches at its both ends, the optical base has convex portions corresponding to the notches of the support holder, the optical base and the support holder are fixed by photo-curable adhesives for bonding the convex portions and the support holder to each other, and the shortest distance between the side faces of the convex portions, which do not face each other, is equal to or less than the width of the support holder in the direction of right and left ends.Type: ApplicationFiled: July 13, 2011Publication date: November 3, 2011Applicant: Panasonic CorporationInventors: Toshiyasu TANAKA, Yoshiaki KOMMA, Kanji WAKABAYASHI, Fumitomo YAMASAKI, Osamu KAJINO
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Patent number: 8031578Abstract: An optical head device according to the present invention includes: a light source for outputting laser light; an optical system for allowing the laser light to be radiated onto an optical disk medium; and an aberration correction section for correcting an aberration of the laser light. The aberration correction section includes: a plurality of mirror sections for reflecting the laser light; a plurality of mirror driving sections for displacing the plurality of mirror sections; and a detection section for detecting a physical condition within the optical head device.Type: GrantFiled: August 25, 2006Date of Patent: October 4, 2011Assignee: Panasonic CorporationInventors: Hiroshi Obi, Hironori Tomita, Akira Kurozuka, Osamu Kajino
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Patent number: 8004952Abstract: To provide an optical pickup and an optical information device, capable of obtaining excellent signal characteristics for an optical disk on and/or from which recording and/or reproducing are performed using a laser. The optical pickup includes an optical detector, a support holder for holding the optical detector, and an optical base for fixing the support holder. The support holder has at least two notches at its both ends, the optical base has convex portions corresponding to the notches of the support holder, the optical base and the support holder are fixed by photo-curable adhesives for bonding the convex portions and the support holder to each other, and the shortest distance between the side faces of the convex portions, which do not face each other, is equal to or less than the width of the support holder in the direction of right and left ends.Type: GrantFiled: July 7, 2009Date of Patent: August 23, 2011Assignee: Panasonic CorporationInventors: Toshiyasu Tanaka, Yoshiaki Komma, Kanji Wakabayashi, Fumitomo Yamasaki, Osamu Kajino
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Publication number: 20110138405Abstract: A deterioration of reproduction light is occurred by a laser drive current on which a high-frequency current is superimposed. The present invention, for example, is an optical information reproducing apparatus which irradiates a laser beam to an optical disc 1 and reads an information, the optical information reproducing apparatus includes a semiconductor laser 6 which generates the laser beam, a laser drive unit 7 which supplies a drive current on which a high-frequency current are superimposed to the semiconductor laser 6, a spindle motor 2 which drives the optical disc 1 and a control unit 5 which controls the laser drive unit 7 and the spindle motor 2, and the control unit 5 determines a parameter of the high-frequency current based on magnitude of a current on which the high-frequency current is to be superimposed.Type: ApplicationFiled: August 26, 2009Publication date: June 9, 2011Inventors: Osamu Kajino, Hidenori Wada, Haruhisa Yagi
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Patent number: 7914154Abstract: An image projector according to the present invention includes a first light source that emits visible light and a second light source that emits invisible light and projects the visible light and the invisible light onto a screen. The screen includes a material, at least one of the visible light reflectance, transmittance and absorbance of which changes when irradiated with the invisible light projected. The image projector further includes a modulating section for modulating the intensities of the visible light and invisible light based on an image signal and a control section for controlling the modulating section.Type: GrantFiled: March 14, 2007Date of Patent: March 29, 2011Assignee: Panasonic CorporationInventors: Hiroshi Obi, Hironori Tomita, Akira Kurozuka, Osamu Kajino
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Publication number: 20110019524Abstract: An optical head comprises: a light source that emits a light beam; an objective lens that condenses, in the form of converging light, the light beam emitted by the light source, onto an information recording medium; a cylindrical lens onto which a reflected light beam that is reflected by the information recording medium is incident, and which generates astigmatism for forming a focus error signal; a light detector that receives the reflected light beam passing through the cylindrical lens; and a holder that holds the cylindrical lens and the light detector. The holder has a first main face and a second main face that extend in directions that intersect the optical axis of the reflected light beam. The cylindrical lens is bonded to the first main face and the light detector is bonded to the second main face.Type: ApplicationFiled: January 26, 2010Publication date: January 27, 2011Inventors: Hideki Nakata, Kousei Sano, Takashi Haruguchi, Osamu Kajino
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Patent number: 7872952Abstract: An optical disk apparatus according to the present invention includes: a light emission section for emitting laser light; an optical system for irradiating the optical disk medium with the laser light; and an aberration control section for controlling aberration of the laser light. In one embodiment, the aberration control section repeatedly switches between a plurality of aberration setting states in a focus lock-in operation. In another embodiment, the aberration control section simultaneously sets a plurality of aberration setting states in a focus lock-in operation. As a result, a plurality of aberration setting states can be allowed to substantially coexist within a single optical system.Type: GrantFiled: September 20, 2005Date of Patent: January 18, 2011Assignee: Panasonic CorporationInventors: Akira Kurozuka, Shin-ichi Kadowaki, Joji Anzai, Osamu Kajino
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Patent number: 7855825Abstract: A micro-mechanical structure system according to the present invention includes: a movable structure 5, at least a portion of the movable structure 5 being formed of a single-crystalline material; an elastic supporting member 10 for supporting the movable structure 5; a stationary electrode section 13, 25 at least partially opposing the movable structure 5; and a base 22 which has a circuit section and to which the stationary electrode 13, 25 is affixed. The stationary electrode section 13, 25 includes a first electrode layer (upper stationary electrode layer) 13 positioned relative to the movable structure 5 and a second electrode layer (lower stationary electrode layer) 25 positioned relative to the base 22, the first electrode layer 13 and the second electrode layer 25 being bonded to each other via adhesion layers 15 and 16.Type: GrantFiled: April 14, 2006Date of Patent: December 21, 2010Assignee: Panasonic CorporationInventors: Osamu Kajino, Hironori Tomita, Yoshihiro Mushika
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Publication number: 20100208564Abstract: To provide an optical pickup and an optical information device, capable of obtaining excellent signal characteristics for an optical disk on and/or from which recording and/or reproducing are performed using a laser. The optical pickup includes an optical detector, a support holder for holding the optical detector, and an optical base for fixing the support holder. The support holder has at least two notches at its both ends, the optical base has convex portions corresponding to the notches of the support holder, the optical base and the support holder are fixed by photo-curable adhesives for bonding the convex portions and the support holder to each other, and the shortest distance between the side faces of the convex portions, which do not face each other, is equal to or less than the width of the support holder in the direction of right and left ends.Type: ApplicationFiled: September 18, 2008Publication date: August 19, 2010Applicant: Panasonic CorporationInventors: Toshiyasu Tanaka, Yoshiaki Komma, Kanji Wakabayashi, Fumitomo Yamasaki, Osamu Kajino