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公开(公告)号：JPH11259872A
公开(公告)日：1999-09-24
申请号：JP5679598
申请日：1998-03-09
Applicant: SONY CORP
Inventor： KIJIMA KOUICHIROU , YAMAMOTO KENJI , OSATO KIYOSHI
Abstract: PROBLEM TO BE SOLVED: To provide a distance detecting device and a distance detecting method which detect the distance between an objective lens and an optical disk in an optical contact state and an optical disk drive which uses them. SOLUTION: In an optical lens 13a and an optical disk which are in an optical contact and composed of a >=1 NA(numerical aperture), this distance detecting device 21 is equipped with a light source 22 which irradiates an optical disk 11 through an optical lens 13a with a light beam consisting of a main beam L1 and at least one side beam L2 and L3, an optical detecting means 23 which detects the return lights of the main beam and side beam from the optical disk and an arithmetic means 24 which detects the distance between the optical lens and the optical disk based on the difference between the detected signals of the return lights from the optical detecting means, so that the respective optical paths of the main beam and the side beam have mutually different distances between the optical lens and optical disk.
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公开(公告)号：JPH1081018A
公开(公告)日：1998-03-31
申请号：JP23704396
申请日：1996-09-06
Applicant: SONY CORP
Inventor： MURAKAMI TAKAAKI , ANDO MASATO , KIJIMA KOUICHIROU
Abstract: PROBLEM TO BE SOLVED: To improve the representation of a gradation, especially on a low concentration side by metering a medium to be metered with the help of a heating element when the medium to be metered is mixed with a discharge medium and the mixture is jetted. SOLUTION: A heat-generating element 11 which consists of a resistor 25 with both ends to which electrodes 23a, 23b are connected, on a heat accumulation layer 21 and a protecting coating 24 formed on the resistor 25 and generates heat through energization to the resistor 25, is installed in a second pressure chamber 9 filled with a metered medium in such a manner that the protecting coating 24 comes into contact with the metered medium in the pressure chamber 9. The heat-generating element 11 has an in-plane temperature distribution on the surface of the element at the time of heat generation. In this heating element 11, the temperature distribution should preferably be formed in the in-plane direction at the time of heat generation by changing the heat generating value of the resistor 25, at its energization, in the in-plane direction. In addition, the thickness of the protecting coating 24 is changed in the in-plane direction of the heating element 11. Alternatively, the thickness of the heat accumulation layer 21 may be changed in the in-plane direction of the heating element 11, so that the in-plane temperature distribution at the time of heat generation is formed.
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公开(公告)号：JPH09236722A
公开(公告)日：1997-09-09
申请号：JP4380996
申请日：1996-02-29
Applicant: SONY CORP
Inventor： KIJIMA KOUICHIROU
Abstract: PROBLEM TO BE SOLVED: To provide an optical waveguide device capable of stably and efficiently making a laser beam incident on the optical waveguide even when it is used under the environment where dust and particles float. SOLUTION: A flat plate 20 with thickness of 0.1mm or above is fixed to the end surface of the optical waveguide 2 on which the laser beam L is concentrated by a condenser lens system 3. The condenser lens system 3 is moving controlled in the optical axial direction of the condenser lens system 3 and the direction orthogonally intersecting with the optical axial direction according to the intensity (or intensity distribution) of the reflection beam of the laser beam from the optical waveguide 2, and makes the laser beam incident on the optical waveguide 2 always.
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公开(公告)号：JPH08267758A
公开(公告)日：1996-10-15
申请号：JP6945995
申请日：1995-03-28
Applicant: SONY CORP
Inventor： MURAKAMI TAKAAKI , KIJIMA KOUICHIROU , ANDO MASATO , NAKAYAMA TETSUO
Abstract: PURPOSE: To provide a low-cost orifice plate capable of increasing yield and the opening diameter. CONSTITUTION: A first plate 114 provided with supply openings 1, 2, and a second plate 118 provided with a nozzle 3 are laminated on a third plate 116 in the direction of thickness. The third plate 116 is formed of a dry film resist having a flow passage 4 in the direction of the inside of the surface.
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公开(公告)号：JPH0822042A
公开(公告)日：1996-01-23
申请号：JP18074294
申请日：1994-07-08
Applicant: SONY CORP
Inventor： KIJIMA KOUICHIROU , OGAWA TAKESHI , WATARI AKIE
Abstract: PURPOSE:To provide an optical waveguide device and the production of an optical waveguide device and an optical waveguide by which the power density of light in the optical waveguide can be increased and a process of accurate positioning can be eliminated. CONSTITUTION:In this optical waveguide device, a protective film 2 essentially comprising SiO2 (silicon dioxide) and Ta2O5 (tantalum pentoxide) is formed as a mask material on an optical waveguide material layer of a substrate 1 comprising LiNbxTa(1-x)O3 (0
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Patent Agency Ranking
公开(公告)号：JPH0635019A
公开(公告)日：1994-02-10
申请号：JP20704392
申请日：1992-07-13
Applicant: SONY CORP
Inventor： TAMADA HITOSHI , DOKO TORU , KIJIMA KOUICHIROU
Abstract: PURPOSE:To eliminate the need for applying an AR coating on the end face of an optical waveguide, to facilitate the miniaturization of the device and to facilitate a matching stage. CONSTITUTION:A semiconductor laser chip 1 generates a basic wave laser beam. An L-shaped fixing member 7 and an adhesive 8 fix and support a heat sink 3 and a KTP-SHG wavelength conversion element 6 by aligning the electric field direction of the semiconductor laser chip and the electric field direction of the Ta2O5 optical waveguide 4 in such a manner that the Ta2O5 optical waveguide 4 exists in proximity to the end face of the semiconductor laser chip 1. The basic wave laser beam is, therefore, guided to the Ta2O5 optical waveguide 4.
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公开(公告)号：JPH04296730A
公开(公告)日：1992-10-21
申请号：JP6201491
申请日：1991-03-26
Applicant: SONY CORP
Inventor： TAGUCHI AYUMI , YAMADA MASAHIRO , KIJIMA KOUICHIROU , KAWAKUBO SHIN
Abstract: PURPOSE:To surely form the polarization inverting structure without exerting any influence on the optical characteristics of the ferroelectric substance by locally heating only a position where necessary polarization inversion is caused. CONSTITUTION:An electric heating body 3 is adhered to the surface of ferroelectric crystal 1, made of, for example, single-area LiNbOa3(LN), which constitutes a main surface 1a in pattern corresponding to the pattern of the polarization inverting structure of the ferroelectric single crystal 1. This electric heating body 3 can be patterned by photolithographic etching after a conductor layer is vapor-deposited over the entire surface by sputtering. This electric heating body 3 is energized on to generate the temperature gradient of an abrupt temperature drop in the depth direction from the side of the main surface 1a right before the part of the ferroelectric crystal 1 where the electric heating body 3 is adhered. Consequently, an electric field is produced by pyroelectric effect at the heated part from the inside to the main surface 1a and a polarization inverted part 2 shown by an arrow (b) in the opposite direction from an arrow (a) is formed in the ferroelectric crystal 1 opposite the main surface 1a.
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公开(公告)号：JPH03121428A
公开(公告)日：1991-05-23
申请号：JP34427089
申请日：1989-12-28
Applicant: SONY CORP
Inventor： YAMADA MASAHIRO , KIJIMA KOUICHIROU
Abstract: PURPOSE:To allow the sure formation of a fine and periodical inverting domain structure by impressing a required DC voltage or pulse voltage between 1st and 2nd electrodes which are disposed to face each other and thereby locally forming the domain inverting parts of the patterns corresponding to the electrode patterns. CONSTITUTION:The 1st and 2nd electrodes 11, 12 are disposed to face each other on both main surfaces 1a and 1b facing each other of the nonlinear ferroelectric optical material 1 which is formed as a single domain. At least either of the respective electrodes 11, 12, more specifically, the 1st electrode 11 disposed on the surface of the side to be formed with the final domain inverting structure, for example, the main surface 1a side, of the nonlinear ferroelectric optical material 1 is disposed to face the main surface 1a via an insulator 2. The required DC voltage or pulse voltage is impressed between the electrodes 11 and 12 from a power source 4. The periodic domain inverting structure part 3 inverted locally with the domain at the pattern corresponding to the pattern of the electrode 11 is surely formed on the main surface 1a of the nonlinear ferroelectric optical material 1 in this way.
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公开(公告)号：JPH0348831A
公开(公告)日：1991-03-01
申请号：JP18436389
申请日：1989-07-17
Applicant: SONY CORP
Inventor： YAMADA MASAHIRO , KIJIMA KOUICHIROU
Abstract: PURPOSE:To obtain an exact periodic domain inversion structure by disposing counter electrodes on both sides of a nonlinear ferroelectric optical material formed as a single domain in-between, forming at least one thereof as the patterns corresponding to the periodic domain inversion structures and impressing a DC voltage between the electrodes formed in such a manner. CONSTITUTION:Parallel and stripe-shaped rugged patterns 3 corresponding to the patterns of the periodic domain structures to be formed on the 1st nonlinear ferroelectric optical element material 1 are formed by reactive ion etching, etc., on the main surface 2a consisting of +C surface of the 2nd nonlinear ferroelectric optical element material 2. The main surface 2a formed with the rugged patterns 3 is then butted and superposed on the main surface 1a consisting of the +C surface of the 1st material and the heat resistant electrodes 9, 9 are disposed to face each other on both sides of the materials 1, 2 in-between. A DC power source 4 is then turned on with the material 2 side as + to impress the DC voltage between the materials 1 and 2. The periodic domain inversion structure parts 5a corresponding to the patterns 3 of the substrate 2 are generated on the main surface 1a side of the material 1 in such a manner.
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10.发明专利
公开(公告)号：JPH11250402A
公开(公告)日：1999-09-17
申请号：JP4817698
申请日：1998-02-27
Applicant: SONY CORP
Inventor： KIJIMA KOUICHIROU , KOCHIYAMA AKIRA , OSATO KIYOSHI
IPC: G11B11/10 , G11B5/02 , G11B11/105
Abstract: PROBLEM TO BE SOLVED: To obtain a magnetic field generator and a magneto-optical disk device arranged close to an optical disk and capable of effectively utilizing a magnetic field even when the magnetic field generator is arranged on the side of an optical pickup. SOLUTION: The magnetic field generator includes a circular substrate 21 provided with a hole 21a on its center, a coil 22 constituted of a conductive pattern formed around the hole 21a on the surface of the substrate 21, through holes 21a, 21b pierced into the substrate 21 in the end part areas of the conductive pattern, and power supply parts 24, 25 formed on the rear face of the substrate 21 in the areas of the through holes 21a, 21b and connected to the conductive pattern through the through holes 21a, 21b. Since driving voltage is applied from the power supply parts 24, 25 formed on the rear face of the substrate 21 to the coil 22 formed on the substrate 21 constituting the magnetic field generator, there is no wiring to the coil on the optical disk side of the substrate 21. Thereby the wiring is not brought into contact with the optical disk and there is no fear of big damage occuring on the optical disk or the disconnection of the wiring.
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