-
41.发明专利
公开(公告)号：JP2000215539A
公开(公告)日：2000-08-04
申请号：JP1221599
申请日：1999-01-20
Applicant: SONY CORP
Inventor： KOCHIYAMA AKIRA , KIJIMA KOICHIRO , OSATO KIYOSHI
Abstract: PROBLEM TO BE SOLVED: To efficiently apply magnetic field on an optical magnetic recording layer of an optical recording medium with a low power consumption as well as to execute making into high NA, and to suppress occurrence of discontinuity of a coil and others. SOLUTION: A magneto-optical head 25 is equipped with lenses 41, 42 to make light irradiating on a magneto-optical recording layer 2a of a magneto- optical disk 2 to converge and with a coil part 46 which is a magnetic field generating element arranged on the side opposite to the magneto-optical disk 2 on a coil-supporting substrate 44a on the lense 41. On the coil-supporting substrate 44a on the lense 41, a projecting part 44b is provided which is formed of an outgoing radiating surface 44d projecting from a recessed part 44c arranged with the coil part 46, towards the side of the magneto-optical disk 2.
-
公开(公告)号：JP2003317314A
公开(公告)日：2003-11-07
申请号：JP2002112884
申请日：2002-04-16
Inventor： KIJIMA KOICHIRO , SAITO KIMIHIRO
CPC classification number: G11B7/24038 , G11B7/00454 , G11B7/243 , G11B7/257 , G11B2007/24306 , G11B2007/25706 , G11B2007/25715
Abstract: PROBLEM TO BE SOLVED: To transmit recording light or reproducing light for recording/ reproducing with respect to a first recording layer 3 with high transmissivity without making thin a second recording layer 5 arranged on a side to make incident the recording light or the reproducing light in an optical recording medium having two or more recording layers. SOLUTION: In the optical recording medium having two or more recording layers, the optical recording medium has the first recording layer 3 and the second recording layer 5 arranged on the side to make incident the recording light or the reproducing light rather than the first recording layer 3 through an intermediate layer 4, and has a dielectric layer 7 wherein the transmissivity of light to be transmitted through the second recording layer 2 with increase in the incident angle of light between the intermediate layer 4 and the second recording layer 5. COPYRIGHT: (C)2004,JPO
Abstract translation: 要解决的问题：为了传输用于相对于具有高透射率的第一记录层3进行记录/再现的记录光或再现光，而不使薄的第二记录层5布置在一侧以使记录光或 在具有两个或多个记录层的光记录介质中再现光。 解决方案：在具有两个或更多个记录层的光学记录介质中，光学记录介质具有布置在侧面上的第一记录层3和第二记录层5以使记录光或再现光入射，而不是 第一记录层3通过中间层4，并且具有电介质层7，其中通过第二记录层2透射的光的透射率随着中间层4和第二记录层5之间的入射角的增加而增加。 版权所有（C）2004，JPO
-
公开(公告)号：JP2002298303A
公开(公告)日：2002-10-11
申请号：JP2001104764
申请日：2001-04-03
Applicant: SONY CORP
Inventor： KIJIMA KOICHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a recording medium which can be effectively heated in a minute area and to provide a recording and reproducing method for the recording medium wherein recording or reproduction of data is performed by heating the minute area in the recording medium. SOLUTION: In the recording medium wherein a recording laminated body 2 including a recording layer 21 on a substrate 1 has a heating promotion layer 23 and the like and recording or reproduction of data is performed in a region where the temperature of the recording layer is raised to a prescribed temperature or above by light irradiation, the light absorption ratio of the recording layer when the recording layer is irradiated with light having a prescribed threshold value of light quantity or more, is higher than that when the recording layer is irradiated with light having the prescribed threshold value of light quantity or below and the prescribed temperature of the area where the recording or reproduction of data is performed is set to be higher than the temperature of the recording layer when the recording layer is irradiated with light having the threshold value of light quantity.
-
公开(公告)号：JP2002074734A
公开(公告)日：2002-03-15
申请号：JP2000265275
申请日：2000-09-01
Applicant: SONY CORP
Inventor： KIJIMA KOICHIRO , KOCHIYAMA AKIRA , YAMAMOTO KENJI , HASHIMOTO GAKUJI , IIDA ATSUSHI
IPC: G11B7/09 , G11B7/135 , G11B7/1374 , G11B7/22
Abstract: PROBLEM TO BE SOLVED: To provide an optical head in which thermal stress caused by an optical lens attached to a bobbin can be reduced. SOLUTION: The optical head 110 is equipped with the bobbin 10 which is formed with a center hole 10H, and the optical lens 20 which is attached to the bobbin 10 through a thermal expansion relaxing member 40 formed with an opening 40H. The optical lens 20 is provided with a base plate 24A consisting of an optical material whose thermal expansion coefficient is different from that of the bobbin 10. The base plate 24A is provided with a projected part 21 having the function of a convex lens and with a flat part 22 situated on the periphery of the projected part 21. The flat part 22 is stuck to the thermal expansion relaxing member 40 in a manner that the projected part 21 is fitted to the opening 40H. The optical lens 20 is arranged so that the center axis or its extension of the projected part 21 passes through the center hole 10H of the bobbin 10, while the center axis of the projected part 21 is aligned with that of the center hole 10H of the bobbin 10.
-
公开(公告)号：JP2002071910A
公开(公告)日：2002-03-12
申请号：JP2000267810
申请日：2000-09-04
Applicant: SONY CORP
Inventor： KOCHIYAMA AKIRA , KIJIMA KOICHIRO
Abstract: PROBLEM TO BE SOLVED: To suppress the eccentricity of light from the center axis and to suppress fluctuation in the diameter of a beam irradiating an optical recording layer to within the allowable range. SOLUTION: The device is equipped with a light converging means to converge the light irradiating the recording layer of an optical recording medium and with a light shielding part applied in the optical recording medium side of the light converging means. A transmission hole to transmit the converged light by the light converging means is formed in the light shielding part to regulate the diameter of the light irradiating the optical information recording medium. The incident light is first converged by the light converging means and then the converged light transmits though the transmission hole and irradiates the magneto-optical recording layer of the optical recording medium. The diameter of the beam irradiating the optical recording layer of the optical recording medium is regulated by the transmission hole to determine the NA.
-
Patent Agency Ranking
公开(公告)号：JP2002062410A
公开(公告)日：2002-02-28
申请号：JP2000251240
申请日：2000-08-22
Applicant: SONY CORP
Inventor： KIJIMA KOICHIRO , KOCHIYAMA AKIRA
IPC: G02B13/00 , G02B3/00 , G11B7/135 , G11B7/1374 , G11B7/22
Abstract: PROBLEM TO BE SOLVED: To provide an optical element having a substrate comprising an optical material and capable of enhancing mechanical strength. SOLUTION: The optical element 20 has a substrate 24A comprising an optical material. The substrate 24A has a convex part 21 having the function of a convex lens, a flat part 22 situated around the convex part 21 and a peripheral part 23 situated around the flat part 22. The thickness of the substrate 24A in the peripheral part 23 is larger than that in the flat part 22.
-
公开(公告)号：JP2001243664A
公开(公告)日：2001-09-07
申请号：JP2000051958
申请日：2000-02-28
Applicant: SONY CORP
Inventor： KIJIMA KOICHIRO
Abstract: PROBLEM TO BE SOLVED: To correctly adjust a laser irradiating position in the manufacture of a recording medium and a recording medium manufacturing master disk wherein a recording pattern is formed through a laser beam irradiating process. SOLUTION: The laser beam is branched into a main laser beam 13M and a sub-laser beam 13S, pattern irradiation corresponding to the recording pattern is performed by the main laser beam 13M, and the position of the main laser bema 13M is adjusted by the sub-laser beam 13S obtaining the positional information from the area where a pattern irradiation processing by the main laser beam 13M is performed.
-
公开(公告)号：JP2001236688A
公开(公告)日：2001-08-31
申请号：JP2000048962
申请日：2000-02-21
Applicant: SONY CORP
Inventor： ICHIMURA ISAO , KIJIMA KOICHIRO , YAMAMOTO KENJI , KURODA YUJI
IPC: G11B7/12 , G11B7/122 , G11B7/135 , G11B7/1372 , G11B7/1387 , G11B7/24 , G11B11/00
Abstract: PROBLEM TO BE SOLVED: To provide an optical recording medium in which the contribution to the formation of a spot of a converged beam can be improved when a light spot is formed in a recording layer by the converged light from an optical system. SOLUTION: The optical recording medium 80 is irradiated with a converged light beam LB from an optical system. The medium gives >=30% or about >=30% amplitude transmittance for the light in the converged light beam LB passing through outer peripheral part of the optical system and reaching the recording layer 863 in the optical recording medium 80. The optical recording medium 80 has an inorganic dielectric layer 861 in the incident side where the converged beam LB enters, and the refractive index of the inorganic dielectric layer 861 is higher than the refractive index of the optical system. The recording layer 863 is formed between dielectric layers 862 and 864. For example, the optical recording medium 80 is a phase transition type optical disk, the optical system is a near field optical system, and the converged light beam LB is obtained from blue or blue-violet laser light.
-
公开(公告)号：JP2001023245A
公开(公告)日：2001-01-26
申请号：JP19674699
申请日：1999-07-09
Applicant: SONY CORP
Inventor： KURODA YUJI , KIJIMA KOICHIRO , ICHIMURA ISAO , OSATO KIYOSHI
IPC: G11B7/004 , G11B7/135 , G11B7/24 , G11B7/257 , G11B11/105
Abstract: PROBLEM TO BE SOLVED: To provide a recording medium in which disappearance of recorded signals or damages in the optical recording medium due to accumulated heat by irradiation of light can be prevented, and to provide an optical recording device equipped with that medium. SOLUTION: The optical recording medium consists of a substrate 11, reflection film 12 formed on the substrate 11, recording layer 14 formed on the reflection film 12, and first protective layer 15 formed on the recording layer 14, and information is recorded and reproduced by irradiating the recording layer 14 with light from an optical system through the first protective layer 15 side. A light-transmitting heat radiating layer 16 which accelerates diffusion of heat from the recording layer 14 is formed on the first protective layer 15. The optical recording device is equipped with that optical recording medium.
-
公开(公告)号：JP2001023233A
公开(公告)日：2001-01-26
申请号：JP19652799
申请日：1999-07-09
Applicant: SONY CORP
Inventor： KIJIMA KOICHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a method capable of machining plural pieces of optical lenses simultaneously and superior in mass productivity, in the manufacture of the optical lens in which a working distance to the optical disk is narrow and in which the outer periphery is cut off in the part other than the one that becomes an optical path among the faces opposing the optical disk. SOLUTION: An optical device material 1 is formed which has an incident plane 1a with the shape of converging an incident optical flux and which has an opposing part 1b on the side opposite to an optical recording medium; the opposing part 1b is disposed closely adhered with a photosensitive material 4; a light flux for photosensitive processing is made incident on the incident plate 1a through a ball lens 2, converged on the incident plane 1a and focused on the photosensitive material 4; the opposing part 1b is formed with a substance consisting of the photosensitive material 4 which is irradiated and exposed by the light flux the photosensitive processing; and the opposing part 1b is machined based on the position of the substance, with an opposing face formed opposite to the optical recording medium in the optical pickup device.
-
-
-
-
-
-
-
-
-
Search Results
71
records
(took 0.024 seconds)
