Particular Lens Patents (Class 369/112.23)
  • Patent number: 10314469
    Abstract: A forward-viewing spectrally encoded endoscope (SEE) probe includes a light guiding component, a light focusing component, and a grating component arranged along a longitudinal axis of a drive cable. The SEE probe is configured for guiding light from the light guiding component, through the light focusing component, and to the grating component, and then forwarding a spectrally dispersed light line from the grating component towards an image plane. One or more of the light guiding component, the light focusing component, and the grating component is arranged at an angle with respect to the longitudinal axis of the drive cable so that at least one wavelength of the spectrally dispersed light line goes to the direction of axis of the drive cable.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: June 11, 2019
    Assignee: Canon U.S.A., Inc.
    Inventor: Mitsuhiro Ikuta
  • Patent number: 10033151
    Abstract: Laser module including a meniscus collimating lens. In some embodiments, a monolithic material having an index of at least 2.0 provides a concave lens surface proximal to an emission surface of the laser and a convex lens surface distal from the emission surface. In some embodiments, a perimeter of the collimating lens has a face-flat that may be disposed directly against a reference surface while the concave lens surface is separated from the emission surface. The meniscus lens may advantageously provide reduced angle of ray incidence and require lower asphericity relative to a plano-convex collimating lens.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: July 24, 2018
    Assignee: nLIGHT, Inc.
    Inventors: Scott A. Lerner, Raymond Kirk Price
  • Patent number: 9924863
    Abstract: Some embodiments of the present inventive concept provide optical coherence tomography (OCT) systems for integration with a microscope. The OCT system includes a sample arm coupled to the imaging path of a microscope. The sample arm includes an input beam zoom assembly including at least two movable lenses configured to provide shape control for an OCT signal beam; a scan assembly including at least one scanning mirror and configured for telecentric scanning of the OCT signal beam; and a beam expander configured to set the OCT signal beam diameter incident on the microscope objective. The shape control includes separable controls for numerical aperture and focal position of the imaged OCT beam.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: March 27, 2018
    Assignee: Bioptigen, Inc.
    Inventors: Eric L. Buckland, Nestor O. Farmiga, Robert H. Hart, Andrew Murnan, Christopher Saxer
  • Patent number: 9919533
    Abstract: A liquid droplet forming apparatus includes a liquid retention unit configured to retain particle suspension liquid in which precipitated particles are suspended; a membrane member, in which a nozzle is formed, configured to discharge the particle suspension liquid retained in the liquid retention unit, as a liquid droplet, by vibration from the nozzle; and a particle state detection unit configured to detect, from a side of the liquid retention unit, a particle state of the precipitated particle around the nozzle in the particle suspension liquid.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: March 20, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Manabu Seo, Satoshi Nakazawa, Yuzuru Kuramochi, Daisuke Takagi, Takahiko Matsumoto
  • Patent number: 9867526
    Abstract: An endoscope includes a light outlet surface at the distal end of the endoscope and a controllable light-refracting device for controllable refraction of illuminating light by a shapeable phase interface between two fluids, such that the controllable light-refracting device is disposed at the distal end of the endoscope.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: January 16, 2018
    Assignee: Karl Storz SE & Co. KG
    Inventor: Fang Lei
  • Patent number: 9851246
    Abstract: A method and apparatus for optical metrology is disclosed. There is disclosed, for example, a method involving a radiation intensity distribution for a target measured using an optical component at a gap from the target, the method including calculating a correction factor for the variation of radiation intensity of the radiation intensity distribution as a function of variation of the distance of the gap.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: December 26, 2017
    Assignee: ASML NETHERLANDS B.V.
    Inventor: Sietse Thijmen Van Der Post
  • Patent number: 9498121
    Abstract: Some embodiments of the present inventive concept provide optical coherence tomography (OCT) systems for integration with a microscope. The OCT system includes a sample arm coupled to the imaging path of a microscope. The sample arm includes an input beam zoom assembly including at least two movable lenses configured to provide shape control for an OCT signal beam; a scan assembly including at least one scanning mirror and configured for telecentric scanning of the OCT signal beam; and a beam expander configured to set the OCT signal beam diameter incident on the microscope objective. The shape control includes separable controls for numerical aperture and focal position of the imaged OCT beam.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: November 22, 2016
    Assignee: Bioptigen, Inc.
    Inventors: Eric L. Buckland, Nestor O. Farmiga, Robert H. Hart, Andrew Murnan, Christopher Saxer
  • Patent number: 9429508
    Abstract: A microparticle measuring apparatus for highly accurately detecting the position of a microparticle flowing through a flow channel includes a light irradiation unit for irradiating a microparticle flowing through a flow channel with light, and a scattered light detection unit for detecting scattered light from the microparticle, including an objective lens for collecting light from the microparticle, a light splitting element for dividing the scattered light from the light collected by the objective lens, into first and second scattered light, a first scattered light detector for receiving an S-polarized light component, and an astigmatic element disposed between the light splitting element and the first scattered light detector, and making the first scattered light astigmatic. A relationship between a length L from a rear principal point of the objective lens to a front principal point of the astigmatic element, and a focal length f of the astigmatic element satisfies the following formula I. 1.5f?L?2.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: August 30, 2016
    Assignee: SONY CORPORATION
    Inventors: Taichi Takeuchi, Shingo Imanishi
  • Patent number: 9417512
    Abstract: The light source device includes a first light source, a second light source, and a substrate including a base member. A first wiring and a second wiring are disposed on the substrate. The first wiring has a connection part including connection parts such that the first light source is electrically connected in series and a connection part including connection parts such that the second light source is electrically connected in series. The base member is provided with at least one through-hole at each portion where the connection parts of the connection parts are disposed, and includes a protrusion in a vicinity of the through-hole such that the protrusion protrudes along a surface of the base member in a direction intersecting the first wiring. The second wiring includes at least one detour path in a vicinity of the protrusion, detouring around the through-hole with an insulation distance from the through-hole.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: August 16, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Kiyoko Tsuji
  • Patent number: 9266203
    Abstract: A part to be centered during an assembly process includes an effective portion which performs a function and is shaped for insertion into a hole, a reference portion extended from the effective portion and formed substantially perpendicular to a center axis of the effective portion, and an aligning portion extended from the effective portion and formed around the effective portion. When the effective portion of the part is inserted into the hole, a center of the effective portion is automatically aligned with a centerline of the hole.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: February 23, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eun-sung Lee, Min-seog Choi
  • Publication number: 20150131425
    Abstract: Provided is a recording apparatus including a self-excited oscillation semiconductor laser that has a double quantum well separate confinement heterostructure and includes a saturable absorber section to which a negative bias voltage is applied and a gain section into which a gain current is injected, an optical separation unit, an objective lens, a light reception element, a pulse detection unit, a reference signal generation unit, a phase comparison unit, a recording signal generation unit, and a control unit.
    Type: Application
    Filed: July 10, 2012
    Publication date: May 14, 2015
    Applicant: SONY CORPORATION
    Inventors: Goro Fujita, Tsutomu Maruyama, Masaru Kuramoto, Hideki Watanabe
  • Publication number: 20150124578
    Abstract: An objective lens capable of converging light of a used wavelength with a satisfactory aberration on a recording medium is provided. An objective lens for converging light of a predetermined wavelength ? on a recording medium satisfies the following condition: |CML|+|CMF|<0.03?, where CML is an amount of a generated third-order coma aberration per 1 degree of tilt of the objective lens, and CMF is an amount of a generated third-order coma aberration per 1 degree of tilt of off-axis light.
    Type: Application
    Filed: November 26, 2014
    Publication date: May 7, 2015
    Inventors: Kazuhiro MINAMI, Yasuhiro TANAKA
  • Publication number: 20150124577
    Abstract: When bnt denotes the length adjustment amount of a front edge portion of an nT recording mark (n: integer, T: channel clock length) and cnT denotes the length adjustment amount of a rear edge portion thereof with respect to a channel clock reference, d denotes a minimum value of n and k denotes a maximum value of n, the length adjustment amount bdT of a front edge portion of a shortest recording mark dT, the length adjustment amount cdT of a rear edge portion of the shortest recording mark dT, the length adjustment amount bkT of a front edge portion of a longest recording mark kT and the length adjustment amount ckT of a rear edge portion of the longest recording mark dT satisfy bdT+cdT>bkT+ckT.
    Type: Application
    Filed: October 1, 2013
    Publication date: May 7, 2015
    Applicant: Panasonic Intellectual Property Management Co., Inc.
    Inventors: Kiyotaka Ito, Yasumori Hino, Isao Kobayashi
  • Patent number: 9001635
    Abstract: An optical element having compatibility among two or more wavelengths and having an excellent converging performance for light with each wavelength, and an optical head apparatus using the optical element are provided. An optical element according to the present disclosure has a first region including an optical axis and a second region formed around the outer circumference of the first region. The first region and the second region respectively have a first diffraction structure and a second diffraction structure each cyclically formed on an aspheric surface and having a step-like cross section. In the first region, the number of steps included between top portions of the first diffraction structure is different from the number of steps included between the optical axis and a top portion that is closest to the optical axis in the first diffraction structure.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: April 7, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Kazuhiro Minami
  • Patent number: 8982678
    Abstract: A data storage media may have at least a multi-layer recording lamination with a predetermined coercivity. The multi-layer recording lamination can be configured to record at least one servo format mark for a plurality of data tracks with a solid immersion mirror and program a data bit on the multi-layer recording lamination with a near field transducer.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: March 17, 2015
    Assignee: Seagate Technology LLC
    Inventors: Edward Charles Gage, Jan-Ulrich Thiele
  • Publication number: 20150043322
    Abstract: The reliability of a super-resolution optical information recording medium whose capacity can be increased is increased. On an optical information recording medium (11) according to the present invention, a content is recorded as a pit group formed such that an average length Tm [nm] of a minimum mark length and a minimum space length becomes shorter than an optical system resolution limit, and reading speed information designating a reading speed in a range from 2×(4.92×Tm/149) [m/s] to less than (10000/60)×2×?×(24/1000) [m/s] is recorded as a reading speed for reproducing the content.
    Type: Application
    Filed: December 7, 2012
    Publication date: February 12, 2015
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Hideharu Tajima, Atsushi Etoh, Go Mori, Masaki Yamamoto, Tetsuya Hayashi, Toshihiko Sakai, Hirohisa Yamada, Takayuki Naka
  • Patent number: 8953272
    Abstract: An apparatus includes a waveguide configured to deliver light to a transducer region. The apparatus also includes a plasmonic transducer that has two metal elements configured as side-by-side plates on a substrate-parallel plane with a gap therebetween. The gap is disposed along the substrate-parallel plane and has an input end disposed proximate the transducer region and an output end. The transducer is configured to provide a surface plasmon-enhanced near-field radiation pattern proximate the output end in response to the light received by the waveguide.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: February 10, 2015
    Assignee: Seagate Technology LLC
    Inventors: Chubing Peng, Kaizhong Gao, Lien Lee, Amit Itagi, Michael Allen Seigler, Yimin Niu, Sethuraman Jayashankar
  • Patent number: 8953428
    Abstract: Assuming that third-order coma aberration per unit angle generated by tilt of BD (60) in recording or reproducing information on or from BD (60) is CMDbd, third-order coma aberration per unit angle generated by tilt of CD (80) in recording or reproducing information on or from CD (80) is CMDcd, third-order coma aberration per unit angle generated by tilt of a compatible objective lens (8) in recording or reproducing information on or from BD (60) is CMLbd, and third-order coma aberration per unit angle generated by tilt of the compatible objective lens (8) in recording or reproducing information on or from CD (80) is CMLcd, a sine condition deviation amount (SCbd) in recording or reproducing information on or from BD (60) is expressed by CMDbd+CMLbd, a sine condition deviation amount (SCcd) in recording or reproducing information on or from CD (80) is expressed by CMDcd+CMLcd, and the sine condition deviation amount (SCbd) and the sine condition deviation amount (SCcd) satisfy SCbd>0 and SCcd<0.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: February 10, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Fumitomo Yamasaki, Kazuhiro Minami, Yoshiaki Komma
  • Publication number: 20150036474
    Abstract: An optical read/write device in accordance with an embodiment of the present invention includes a lens portion configured to irradiate light emitted from a light source to an optical recording medium, and the lens portion includes: a flexible shape-variable lens; and an electrode portion provided on the shape-variable lens. The shape of the shape-variable lens can be changed when voltage is applied to the electrode.
    Type: Application
    Filed: July 9, 2014
    Publication date: February 5, 2015
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sae-Kwang NAM, Ki-Uk KYUNG, Sung-Ryul YUN, Sun-Tak PARK, Bong-Je PARK
  • Publication number: 20150036473
    Abstract: An optical information recording medium includes a substrate that has a recessed portion on a surface thereof, a recording layer, and a reflective layer. By combination of ranges of an optical density of the recording layer and a depth of the recessed portion of the substrate, degradation of reflectance is suppressed.
    Type: Application
    Filed: April 18, 2013
    Publication date: February 5, 2015
    Inventors: Atsushi Takeuchi, Katsuya Owada
  • Patent number: 8929189
    Abstract: An objective lens capable of converging light of a used wavelength with a satisfactory aberration on a recording medium is provided. An objective lens for converging light of a predetermined wavelength ? on a recording medium satisfies the following condition: |CML|+|CMF|<0.03?, where CML is an amount of a generated third-order coma aberration per 1 degree of tilt of the objective lens, and CMF is an amount of a generated third-order coma aberration per 1 degree of tilt of off-axis light.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: January 6, 2015
    Assignee: Panasonic Corporation
    Inventors: Kazuhiro Minami, Yasuhiro Tanaka
  • Patent number: 8897106
    Abstract: An objective lens for optical pickup and an optical pickup apparatus having the same are provided. The objective lens for optical pickup includes a light source side lens surface and a disc side lens surface. The light source side lens surface and the disc side lens surface each include an effective region disposed at a central region of the objective lens and a non-effective region disposed outside the effective region. An optical path changing element, disposed in the non-effective region of at least one of the light source side lens surface and the disc side lens surface, changes a path of light incident thereon.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: November 25, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-su Park, Soo-han Park, Woo-chang Chun
  • Patent number: 8879374
    Abstract: Provided are an objective lens driving unit that maintains the electrical connection between suspension wires and winding bosses. The objective lens driving unit includes a plurality of winding bosses disposed at a side of the frame, each having a projection formed at its end and extending in a direction in which a suspension wire extends.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: November 4, 2014
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Jae-kuon Yun, Chan-ik Lee, Won-seok Choi
  • Patent number: 8873166
    Abstract: An objective lens for an optical pickup device is characterized in that compatibility of three types of optical discs, which are a BD, a DVD, and a CD, may be realized by a common objective lens, and a flare can be created by providing an over-spherical aberration when a third optical disc is used from a size relationship between a pitch on a central region side and a pitch on an intermediate region side across a boundary and a relationship of a direction of a step in the base structures superimposed in a central region and an intermediate region of the objective lens.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: October 28, 2014
    Assignee: Konica Minolta Advanced Layers, Inc.
    Inventor: Kiyono Tateyama
  • Publication number: 20140254345
    Abstract: Assuming that third-order coma aberration per unit angle generated by tilt of BD (60) in recording or reproducing information on or from BD (60) is CMDbd, third-order coma aberration per unit angle generated by tilt of CD (80) in recording or reproducing information on or from CD (80) is CMDcd, third-order coma aberration per unit angle generated by tilt of a compatible objective lens (8) in recording or reproducing information on or from BD (60) is CMLbd, and third-order coma aberration per unit angle generated by tilt of the compatible objective lens (8) in recording or reproducing information on or from CD (80) is CMLcd, a sine condition deviation amount (SCbd) in recording or reproducing information on or from BD (60) is expressed by CMDbd+CMLbd, a sine condition deviation amount (SCcd) in recording or reproducing information on or from CD (80) is expressed by CMDcd+CMLcd, and the sine condition deviation amount (SCbd) and the sine condition deviation amount (SCcd) satisfy SCbd>0 and SCcd<0.
    Type: Application
    Filed: October 17, 2012
    Publication date: September 11, 2014
    Inventors: Fumitomo Yamasaki, Kazuhiro Minami, Yoshiaki Komma
  • Patent number: 8824253
    Abstract: Provided are an optical pickup and an optical system using the same. The optical pickup may include an aperture that is disposed at a side where a light beam is incident on an objective lens. The aperture may limit a range of the light beam such that a width of the light beam incident on the objective lens in a first direction is less than a width in a second direction that is perpendicular to the first direction.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: September 2, 2014
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Ui-yol Kim, Ji-sun Ahn, Yong-jae Lee
  • Patent number: 8824086
    Abstract: An apparatus includes a waveguide configured to deliver light to a transducer region. The apparatus also includes a plasmonic transducer that has two metal elements configured as side-by-side plates on a substrate-parallel plane with a gap therebetween. The gap is disposed along the substrate-parallel plane and has an input end disposed proximate the transducer region and an output end. The transducer is configured to provide a surface plasmon-enhanced near-field radiation pattern proximate the output end in response to the light received by the waveguide.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: September 2, 2014
    Assignee: Seagate Technology LLC
    Inventors: Chubing Peng, Kaizhong Gao, Lien Lee, Amit Itagi, Michael Allen Seigler, Yimin Niu, Sethuraman Jayashankar
  • Patent number: 8797834
    Abstract: 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: Grant
    Filed: May 31, 2011
    Date of Patent: August 5, 2014
    Assignee: Panasonic Corporation
    Inventors: Fumitomo Yamasaki, Hiroshi Shiroiwa, Yoshiaki Komma, Junichi Asada, Osamu Kajino, Noriaki Terahara, Toshiyasu Tanaka
  • Publication number: 20140211603
    Abstract: An optical pickup assembly includes a first optical pickup unit (OPU) and a second OPU. The OPUs are either stacked on each other in separate housings or integrated together in a common housing such that the OPUs are arranged laterally across a tape path and are positioned at a longitudinal position along the tape path.
    Type: Application
    Filed: January 31, 2013
    Publication date: July 31, 2014
    Applicant: ORACLE INTERNATIONAL CORPORATION
    Inventors: Scott Wilson, Daniel Underkofler, Steven Suttle
  • Patent number: 8792317
    Abstract: A system and method for providing direct read after write functionality in an optical data storage device include an optical head having a first coherent light source modulated at higher power during writing of data to the optical medium and a second coherent light source operating in a continuous wave mode at lower power while the first coherent light source is writing data. Optic components combine light from the first and second light sources and focus light from the first coherent light source to a first spot of a selected track on the optical medium and focus light from the second coherent light source to a second spot on the selected track downstream from the first spot relative to movement direction of the optical medium to read and verify the data directly after writing during the write process rather than in a separate verification process.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: July 29, 2014
    Assignee: Oracle International Corporation
    Inventor: Scott D Wilson
  • Patent number: 8767518
    Abstract: An objective lens element that can suppress occurrence of an aberration is disclosed. Sawtooth-like diffraction structures having different height and cycles (pitches) are provided on an inner part R21 and an outer part R22, respectively. A curved surface M211 extending at an intermediate level of recesses and projections of the sawtooth-like diffraction structure provided on the inner part R21, and a curved surface M212 extending at an intermediate level of recesses and projections of the sawtooth-like diffraction structure provided on the outer part R22 are smoothly connected to each other. Even when wavelength of the light source and/or the environmental temperature change, a phase shift does not occur between the inner part R21 and the outer part R22, and a decrease in diffraction efficiency and occurrence of an aberration can be suppressed.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: July 1, 2014
    Assignee: Panasonic Corporation
    Inventors: Katsuhiko Hayashi, Yasuhiro Tanaka, Michihiro Yamagata, Fumitomo Yamasaki
  • Patent number: 8760989
    Abstract: An objective lens element which has excellent compatibility with optical discs having different base material thicknesses is provided. An objective lens element 141 has optically functional surfaces on an incident side and an exit side. Either one of the optically functional surfaces is divided into an inner part 131B including a rotational symmetry axis and an outer part 131F which is a ring-shaped region surrounding the inner part 131B. On the inner part 131B, a plurality of discontinuous steps are provided. The plurality of steps change in height in the same direction from the optical axis toward the outer part, and each of the steps causes a constant optical path difference longer than the wavelength ?1 to the first incident light beam 61 and causes a constant optical path difference shorter than the wavelength ?2 to the second incident light beam 62.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: June 24, 2014
    Assignee: Panasonic Corporation
    Inventors: Katsuhiko Hayashi, Yasuhiro Tanaka, Michihiro Yamagata, Yoshiaki Komma, Kazuhiko Ishimaru
  • Patent number: 8760990
    Abstract: An optical pickup apparatus including an objective lens capable of enhancing temperature characteristics and wavelength characteristics, and which enables compatibility for three types of optical discs of BDs, DVDs, and CDs by using the objective lens in common, an optical information recording and reproducing apparatus, and an objective lens suitable for it. In a first optical path difference providing structure in which at least a first basic structure and a second basic structure are superimposed on each other, an amount of a level difference in an optical axis direction can be reduced, whereby it becomes possible to suppress the lowering of a diffraction efficiency when wavelength changes. Further, in the first basic structure and the second basic structure deterioration of the spherical aberration due to the change of the refractive index of the objective lens can be corrected by utilizing a phenomenon that the wavelength of the light source rises similarly due to a rise in the environmental temperature.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: June 24, 2014
    Assignee: Konica Minolta, Inc.
    Inventors: Hideki Tanaka, Kentarou Nakamura, Kiyono Tateyama
  • Patent number: 8755260
    Abstract: Aspects of the disclosure provide an apparatus. The apparatus includes a collimator configured to have a plurality of positions, and a controller configured to control the collimator to move to a predetermined position associated with a data layer of an optical storage medium to collimate a light beam. The collimated light beam is then focused onto the data layer of the optical storage medium.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: June 17, 2014
    Assignee: Marvell World Trade Ltd.
    Inventors: Mats Oberg, Zachary Keirn
  • Patent number: 8755259
    Abstract: An optical element has at least one surface divided into a plurality of regions and includes: a first region configured to converge light with a wavelength ?1 onto a storage surface of a first optical disc and converge light with a wavelength ?2 onto a storage surface of a second optical disc; and a second region formed around the outer circumference of the first region and configured to converge light with the wavelength ?1 onto the storage surface of the first optical disc. The second region has a concave-convex structure concentrically formed on an aspheric surface and having a cross section being a saw teeth shape. The concave-convex structure is formed by a plurality of different saw teeth shapes, and the plurality of different saw teeth shapes respectively give different phase differences corresponding to substantially integer multiples of the wavelength ?1, for light with the wavelength ?1.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: June 17, 2014
    Assignee: Panasonic Corporation
    Inventors: Kuzuhiro Minami, Yoshiaki Komma, Fumitomo Yamasaki
  • Patent number: 8750087
    Abstract: An optical pickup device corresponding to a plurality of media is provided. The optical pickup device includes a light emitting system and a light receiving system including a plurality of light sources and a light transmission system shared by the light emitting system and the light receiving system, configured to irradiate light on a medium, and receive light reflected from the medium. The light transmission system irradiates light from the light emitting system to be appropriately focused on the medium, receives light reflected from the medium, and transports light to the light receiving system. The light transmission system includes one beam splitter corresponding to the light emitting system and the light receiving system and a position-changing collimating lens shared to correspond to a plurality of media. The position-changing collimating lens is disposed between the beam splitter and the medium, the position being controlled according to optical characteristics of the media.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: June 10, 2014
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Ki-bok Kim, Eun-goo Kim, Hyun-wook Nam, Jung-bae Oh, Ji-sun Ahn
  • Publication number: 20140146653
    Abstract: An objective lens element having improved diffraction efficiency at at least one of used wavelengths is provided. The objective lens element includes one surface including: a first region including an optical axis; and a second region surrounding the first region. A periodic first diffraction structure is formed on the first region, and a periodic second diffraction structure different from the first diffraction structure is formed on the second region. The objective lens element satisfies the following conditions. |A1?B1|<|A2?B2|??(1) |B1|?|B2|??(2) Here, A1 and B1 are diffraction orders at the first region to converge light of a first wavelength and light of a second wavelength on a recording surface, respectively, and A2 and B2 are diffraction orders at the second region to converge the light of the first wavelength and the light of the second wavelength on a recording surface, respectively.
    Type: Application
    Filed: February 4, 2014
    Publication date: May 29, 2014
    Applicant: Panasonic Corporation
    Inventors: Kazuhiro MINAMI, Yoshiaki KOMMA, Fumitomo YAMASAKI, Katsuhiko HAYASHI
  • Publication number: 20140119169
    Abstract: An optical pickup device includes a single objective lens (1) that focuses a light beam to irradiate an optical disk, and an objective lens actuator (29) that drives the objective lens (1). The objective lens actuator (29) includes a lens holder (2) that holds the objective lens (1). Two gaps (Ga, Gb) are formed between the lens holder (2) and the objective lens (1). In an xy plane in which the center of the objective lens (1) is defined as an origin, the tracking direction is defined as an y axis, and the tangential direction of tracks of the optical disk is defined as an x axis, the gap (Ga) is positioned at least in the first quadrant of the xy plane, and the gap (Gb) is positioned at least in the third quadrant of the xy plane.
    Type: Application
    Filed: September 24, 2012
    Publication date: May 1, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Kanji Wakabayashi, Kouji Ieki
  • Patent number: 8699312
    Abstract: An objective optical system for information recording/reproducing, at least one of optical surfaces of the objective optical system comprising a diffraction surface including a first region contributing to converging first, second and third beams and including a diffraction structure formed such that use diffraction orders for the first, second and third beams are 1st-orders and a condition 0.03<(?B11??1)/?1<0.40 is satisfied; a second region contributing to converging only the first and second beams and including a diffraction structure formed such that the use diffraction orders are 1st-orders and a condition: ?0.35<(?B12??B11)/?1<0.35 is satisfied; and a third region contributing to converging only the first beam and including a diffraction structure formed such that the use diffraction order for the first beam is an odd order and a condition: ?0.23<m13 ((?B13??1)/?1)<0.23 is satisfied.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: April 15, 2014
    Assignee: Hoya Corporation
    Inventors: Daisuke Koreeda, Shuichi Takeuchi
  • Publication number: 20140086035
    Abstract: According to one embodiment, a lens driving device includes a fixed member, a movable member, a support part, and a coil. The movable member is configured to retain a lens and a magnet. The supporting part is configured such that a guide member placed substantially in parallel with a lens optical axis supports the movable member at plural positions symmetric with respect to the lens optical axis while the movable member is movable in a direction of the lens optical axis with respect to the fixed member. The coil is configured such that a driving force is generated for the movable member by interaction with the magnet provided in the fixed member.
    Type: Application
    Filed: August 15, 2013
    Publication date: March 27, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuaki Hadame, Kazuo Watabe
  • Publication number: 20140022880
    Abstract: In an optical pickup device for use in recording and reproducing on an optical recording medium, such as a CD or DVD, banks are formed on both sides of an adhesive agent application position for adhering an optical device, such as a photodetector or a laser diode, in an optical pickup case. At this time, a bank on the side of an optical path is formed higher than a height of an outer bank, and an adhesive agent is poured between the banks, to adhere the optical pickup case and the optical device.
    Type: Application
    Filed: June 18, 2013
    Publication date: January 23, 2014
    Applicant: Hitachi Media Electronics Co., Ltd.
    Inventors: Akiko MIZUSHIMA, Hiroaki FURUICHI, Kazuhiko ITO, Ryuichiro MIZUNO, Tamotsu NISHIDA
  • Publication number: 20140016449
    Abstract: A lens driving device includes a lens holder for holding a lens, a supporter portion for supporting the lens holder in a movable manner, a drive portion for driving the lens holder, and an elastic portion for supplying the lens holder with a force in a predetermined direction. The supporter portion includes a shaft engaging with a bearing of the lens holder, and the force in a predetermined direction includes a force in a direction perpendicular to the shaft and a force in a direction to rotate the lens holder about the shaft.
    Type: Application
    Filed: July 10, 2013
    Publication date: January 16, 2014
    Inventors: Kazuya HARADA, Tetsuo NISHIDATE, Toyoshi NOGAMI, Hiromasa SASAOKA
  • Publication number: 20130336101
    Abstract: Provided are an objective lens driving unit that maintains the electrical connection between suspension wires and winding bosses. The objective lens driving unit includes a plurality of winding bosses disposed at a side of the frame, each having a projection formed at its end and extending in a direction in which a suspension wire extends.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 19, 2013
    Inventors: Jae-kuon YUN, Chan-ik LEE, Won-seok CHOI
  • Patent number: 8599672
    Abstract: Provided is an objective lens including a diffraction portion provided on a laser beam incident plane or output plane. The diffraction portion includes first second, and third diffraction regions, wherein first laser beams corresponding to a first optical disc having a first transmissive layer are condensed on a data recording portion of the first optical disc, second laser beams corresponding to a second optical disc having a second transmissive layer thicker than the first transmissive layer are condensed on a data recording portion of the second optical disc, and third laser beams corresponding to a third optical disc having a third transmissive layer thicker than the second transmissive layer are condensed on a data recording portion of the third optical disc. An evaluation parameter calculated on the basis of an in-plane efficiency distribution function has a value corresponding to a symbol error rate that is less than a predetermined value.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: December 3, 2013
    Assignee: Sony Corporation
    Inventors: Motoo Aiba, Hiroyuki Sakakibara, Taiji Minakawa, Fumihiko Hanzawa, Masashi Abe, Jun Adachi, Katsutoshi Sato
  • Publication number: 20130294211
    Abstract: The optical pickup device includes a light-emitting element that emits light, an objective lens that converges light emitted by the light-emitting element on an external optical recording medium, a light-receiving element that receives the light returned from the optical recording medium via the objective lens, a holder that holds the light-emitting element or the light-receiving element, and a casing to which the holder is secured with an adhesive interposed therebetween. The holder has a holder's bonding surface to be bonded to the casing, while the casing has a case's bonding surface facing the holder's bonding surface and to be bonded to the holder. The holder's or casing's bonding surface is provided with adjoining sidewalls that have wall faces forming an angle with the holder's or casing's bonding surface. The holder and casing are adhesively secured to each other with a UV-curable adhesive applied on the holder's or casing's bonding surface.
    Type: Application
    Filed: May 6, 2013
    Publication date: November 7, 2013
    Inventors: Hiroaki FURUICHI, Akiko MIZUSHIMA, Kazuhiko ITO, Ryuichiro MIZUNO, Tamotsu NISHIDA
  • Patent number: 8576685
    Abstract: A high-NA and thin objective lens which prevents occurrence of a crack during lens molding and can stably be molded is provided. The present invention is directed to an objective lens having an optical surface having power which is not negative. The objective lens is a single lens and is formed such that a flat portion which is provided at an outer peripheral portion and perpendicular to the optical axis is closer to a disc surface than the position of the top of an exit-side surface of the objective lens and such that the rate of change in sag of the exit-side surface is continuous across the entire region.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: November 5, 2013
    Assignee: Panasonic Corporation
    Inventors: Katsuhiko Hayashi, Yasuhiro Tanaka, Michihiro Yamagata
  • Publication number: 20130286810
    Abstract: An optical pickup device includes a laser light source 201, a collimating optical system 202 for converting laser light to parallel light, a focusing optical system 205 for focusing the parallel light onto an optical disc, a light detection unit for receiving returning light returning by reflection of the focused light from the optical disc 101 and outputting a detection signal, and a reflecting mirror 204 disposed between the collimating optical system and the focusing optical system. The reflecting mirror 204 has a reflective surface including three regions having different reflectances. The central region on the reflecting surface meets the other two regions, at positions illuminated by the light focused by the light focusing optical system, in boundary lines that are parallel to a radial direction on the optical disc 101. The reflectance of the central region is lower than the reflectances of the other two regions.
    Type: Application
    Filed: January 17, 2012
    Publication date: October 31, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hironori Nakahara, Toshiya Matozaki, Nobuo Takeshita
  • Patent number: 8570845
    Abstract: There are provided an optical head and an optical information device capable of downsizing the optical head, and capable of improving the qualities of a focus error signal, a tracking error signal, and a reproduction signal. A light detector (120) includes a light-receiving unit (121) for receiving a reflected light beam from an optical disc, and a package (125) for covering the light-receiving unit (121). The package (125) has a plurality of light guides (124) formed on a light-receiving surface on the light beam incident side of the light-receiving unit (121), and for guiding a reflected light beam to the light-receiving unit (121), and a light shield (114) for shielding a region except for a plurality of the light guides (124) from light.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: October 29, 2013
    Assignee: Panasonic Corporation
    Inventors: Hideki Nakata, Hidenori Wada, Masahito Nakao
  • Patent number: 8565060
    Abstract: The invention provides an optical pickup device that ensures complete curing of adhesive when a tilt adjusting holder is glued to an objective lens holder. The optical pickup device comprises: a light source; an objective lens for focusing light emitted from the light source onto an optical storage medium; a tilt adjusting holder to which to secure the objective lens; and an objective lens holder to which to glue the tilt adjusting holder. The objective lens holder includes: adhesive joint sections for securing the tilt adjusting holder to the objective lens holder using an adhesive; a seat section on which the tilt adjusting holder abuts; and adhesive anti-overflow pockets, located between the adhesive joint sections and the seat section, for receiving the adhesive when the adhesive flows from the adhesive joint sections.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: October 22, 2013
    Assignee: Hitachi Media Electronics Co., Ltd.
    Inventors: Rika Nomura, Hidenao Saito, Yoshiro Konishi
  • Patent number: 8559290
    Abstract: An optical information recording/reproducing optical system where resin material has Tg>115° C., first, second and third films are on an optical disc side of an objective lens and surfaces of an optical element, respectively, a light source side of the objective lens has a fourth film having four or more layers not containing Ti, each of the first, second and third films includes a non-high refractive index layer made of one of silicon oxide, aluminum oxide, aluminum fluoride and magnesium fluoride or a mixture of at least two of them, each of the first, second and third films is not made of one of Ti, Ta, Hf, Zr, Nb, Mo and Cr, a layer of the fourth film closest to a base material is the non-high refractive index layer. The fourth film satisfies 350<?max(2)<420 and 600<?min(2)<750, and reflectivity thereof decreases monotonously.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: October 15, 2013
    Assignee: Hoya Corporation
    Inventors: Satoshi Inoue, Yuta Yoshida, Naoto Hashimoto, Suguru Takishima