Patents by Inventor Noriaki Terahara
Noriaki Terahara 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: 10283157Abstract: An optical pickup includes an optical base mounted with at least one optical element, a light source that supplies light incident on the at least one optical element, and a tilt spacer that is disposed between the light source and the optical base to adjust a characteristic of the light that enters the optical base. With the characteristic of the light that enters the optical base adjusted by the tilt spacer, the optical base and the light source are fixed directly to each other.Type: GrantFiled: February 5, 2018Date of Patent: May 7, 2019Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Seiji Hoshi, Noriaki Terahara, Fumitomo Yamasaki
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Publication number: 20180268856Abstract: An optical pickup includes an optical base mounted with at least one optical element, a light source that supplies light incident on the at least one optical element, and a tilt spacer that is disposed between the light source and the optical base to adjust a characteristic of the light that enters the optical base. With the characteristic of the light that enters the optical base adjusted by the tilt spacer, the optical base and the light source are fixed directly to each other.Type: ApplicationFiled: February 5, 2018Publication date: September 20, 2018Inventors: Seiji HOSHI, Noriaki TERAHARA, Fumitomo YAMASAKI
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Patent number: 8848501Abstract: The present application discloses detection lens provided with lens portion and flange portion including first surface connected to lens portion and second surface opposite to first surface. Flange portion includes base along optical axis of lens portion, and first to fourth projections projecting from base. First and second projections are point-symmetric around optical axis. Third and fourth projections are point-symmetric around optical axis. Flange portion excludes projection extending beyond second surface. First projection includes first intersecting surface which intersects with first axis. Second projection includes second intersecting surface which intersects with first axis. Third projection includes third intersecting surface which intersects with second axis. Fourth projection includes fourth intersecting surface which intersects with second axis. First distance between first and second intersecting surfaces is longer than second distance between third and fourth intersecting surfaces.Type: GrantFiled: December 20, 2012Date of Patent: September 30, 2014Assignee: Panasonic CorporationInventors: Toshiyasu Tanaka, Noriaki Terahara, Takeshi Ohta, Shinsuke Hatanaka, Fumitomo Yamasaki
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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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Publication number: 20140078877Abstract: The present application discloses detection lens provided with lens portion and flange portion including first surface connected to lens portion and second surface opposite to first surface. Flange portion includes base along optical axis of lens portion, and first to fourth projections projecting from base. First and second projections are point-symmetric around optical axis. Third and fourth projections are point-symmetric around optical axis. Flange portion excludes projection extending beyond second surface. First projection includes first intersecting surface which intersects with first axis. Second projection includes second intersecting surface which intersects with first axis. Third projection includes third intersecting surface which intersects with second axis. Fourth projection includes fourth intersecting surface which intersects with second axis. First distance between first and second intersecting surfaces is longer than second distance between third and fourth intersecting surfaces.Type: ApplicationFiled: December 20, 2012Publication date: March 20, 2014Applicant: PANASONIC CORPORATIONInventors: Toshiyasu Tanaka, Noriaki Terahara, Takeshi Ohta, Shinsuke Hatanaka, Fumitomo Yamasaki
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Patent number: 8473972Abstract: An optical pickup includes a lens holder; an objective lens provided on the lens holder and having an effective region for collecting light from a light source and an edge located outer to the effective region; and a lens protector provided on the lens holder. The lens protector protrudes toward an optical disc more than the objective lens. The edge of the objective lens includes a convexed portion protruding toward the optical disc. An apex of the effective region of the objective lens protrudes toward the optical disc more than the convexed portion of the edge. A straight line connecting a part of the edge of the objective lens and a part of the lens protector is closer to the optical disc than the apex of the effective region of the objective lens.Type: GrantFiled: March 13, 2012Date of Patent: June 25, 2013Assignee: Panasonic CorporationInventors: Noriaki Terahara, Shinsuke Hatanaka, Toshiyasu Tanaka, Takeshi Ohta, Fumitomo Yamasaki
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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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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: 8382343Abstract: In an electronic device including a temperature sensor and an electronic component which is a heat generation source, the temperature is measured while the influence of heat from the electronic component is reduced. The electronic device includes: a base formed of a resin material; a board which is disposed at one side of the base, and includes an electronic component and a temperature sensor; and a heat sink which is disposed at the other side of the base for dissipating heat generated by the electronic component. The heat sink includes an extension part extending from the other side of the base toward a position of the board at which the electronic component is provided.Type: GrantFiled: December 6, 2010Date of Patent: February 26, 2013Assignee: Panasonic CorporationInventors: Noriaki Terahara, Seiji Hoshi, Yoshiyuki Hashimoto, Takeshi Ohta, Toshiyasu Tanaka, Yasuo Ueda, Toshiaki Takasu
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Publication number: 20120240136Abstract: An optical pickup includes a lens holder; an objective lens provided on the lens holder and having an effective region for collecting light from a light source and an edge located outer to the effective region; and a lens protector provided on the lens holder. The lens protector protrudes toward an optical disc more than the objective lens. The edge of the objective lens includes a convexed portion protruding toward the optical disc. An apex of the effective region of the objective lens protrudes toward the optical disc more than the convexed portion of the edge. A straight line connecting a part of the edge of the objective lens and a part of the lens protector is closer to the optical disc than the apex of the effective region of the objective lens.Type: ApplicationFiled: March 13, 2012Publication date: September 20, 2012Applicant: PANASONIC CORPORATIONInventors: Noriaki TERAHARA, Shinsuke HATANAKA, Toshiyasu TANAKA, Takeshi OHTA, Fumitomo YAMASAKI
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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: 8125874Abstract: An optical pickup device has a DVD/CD laser diode for emitting a DVD/CD laser beam as linear polarized light, and a BD laser diode for emitting a BD laser beam. The optical pickup device has a dichroic mirror that regularly reflects a part of the DVD/CD laser beam, transmits a part of the DVD/CD laser beam, and transmits return light of the BD laser beam. The dichroic mirror is formed so that a product of reflectance of outward light of the DVD/CD laser beam and transmittance of return light of the DVD/CD laser beam becomes 20% or more to 25% or less. A light receiving element receives the return light of the DVD/CD laser beam transmitted through the dichroic mirror or the return light of the BD laser beam transmitted through the dichroic mirror.Type: GrantFiled: February 3, 2011Date of Patent: February 28, 2012Assignee: Panasonic CorporationInventors: Yasuo Ueda, Yoshiyuki Hashimoto, Noriaki Terahara, Toshiaki Takasu, Toshiyasu Tanaka
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Publication number: 20120020095Abstract: In an electronic device including a temperature sensor and an electronic component which is a heat generation source, the temperature is measured while the influence of heat from the electronic component is reduced. The electronic device includes: a base formed of a resin material; a board which is disposed at one side of the base, and includes an electronic component and a temperature sensor; and a heat sink which is disposed at the other side of the base for dissipating heat generated by the electronic component. The heat sink includes an extension part extending from the other side of the base toward a position of the board at which the electronic component is provided.Type: ApplicationFiled: December 6, 2010Publication date: January 26, 2012Applicant: PANASONIC CORPORATIONInventors: Noriaki TERAHARA, Seiji HOSHI, Yoshiyuki HASHIMOTO, Takeshi OHTA, Toshiyasu TANAKA, Yasuo UEDA, Toshiaki TAKASU
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Publication number: 20110242960Abstract: A light emitting device includes a base, a light-emitting module, and a shielding case. The light-emitting module is fixed to the base via a curved flexible printed-circuit. The shielding case fixed to the base in such a manner that the light-emitting module is held in a position to resist a restoring force of the flexible printed-circuit which is generated by the curve of the flexible printed-circuit. The light-emitting module includes a heat source, and the shielding case includes a projection. The projection controls movement of the light-emitting module in a direction perpendicular to the direction in which the light-emitting module is held by the shielding case. The projection and the light-emitting module are bonded to each other with silicone.Type: ApplicationFiled: December 21, 2010Publication date: October 6, 2011Inventors: Toshiaki Takasu, Seiji Hoshi, Yoshiyuki Hashimoto, Takeshi Ohta, Toshiyasu Tanaka, Noriaki Terahara, Yasuo Ueda
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Publication number: 20110194397Abstract: An optical pickup device has a DVD/CD laser diode for emitting a DVD/CD laser beam as linear polarized light, and a BD laser diode for emitting a BD laser beam. The optical pickup device has a dichroic mirror that regularly reflects a part of the DVD/CD laser beam, transmits a part of the DVD/CD laser beam, and transmits return light of the BD laser beam. The dichroic mirror is formed so that a product of reflectance of outward light of the DVD/CD laser beam and transmittance of return light of the DVD/CD laser beam becomes 20% or more to 25% or less. A light receiving element receives the return light of the DVD/CD laser beam transmitted through the dichroic mirror or the return light of the BD laser beam transmitted through the dichroic mirror.Type: ApplicationFiled: February 3, 2011Publication date: August 11, 2011Inventors: Yasuo Ueda, Yoshiyuki Hashimoto, Noriaki Terahara, Toshiaki Takasu, Toshiyasu Tanaka