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11. 发明授权

US5201927A Method of producing the optical element 失效
标题翻译：光学元件的制造方法
公开(公告)号：US5201927A
公开(公告)日：1993-04-13
申请号：US865586
申请日：1992-04-09
申请人： Shoji Nakamura , Takasi Inoue , Masaaki Sunohara , Tadao Shioyama
发明人： Shoji Nakamura , Takasi Inoue , Masaaki Sunohara , Tadao Shioyama
IPC分类号： C03B11/08
CPC分类号： C03B11/08 , C03B2215/73 , C03B2215/86
摘要： A machine is provided for molding an optical element by using a molding block having upper and lower molding dies, a sleeve die and a glass blank combined integrally with each other. The machine includes a chamber which accommodates a heating zone having a plurality of sections for heating the molding block from above and below, a deformation zone for pressing the molding dies and a cooling zone having a plurality of sections for cooling the molding block. The chamber is formed with an inlet and an outlet for the molding block. The sections of the heating zone, the deformation zone and the sections of the cooling zone are provided independently of one another. A transport member is provided for sequentially transporting the molding block through the heating zone, the deformation zone and the cooling zone, and first and second shutters are provided for opening gas supply member is provided for introducing nonoxidizing gas into the chamber.
摘要翻译：提供一种机器，用于通过使用具有上下成型模具的模制块，套筒模具和彼此一体地组合的玻璃坯料来模制光学元件。该机器包括容纳加热区域的室，该加热区具有用于从上下方加热成型块的多个部分，用于按压模具的变形区域和具有用于冷却模制块的多个部分的冷却区域。该室形成有用于模制块的入口和出口。加热区，变形区和冷却区的部分彼此独立地设置。设置有用于将成型块依次传送通过加热区域，变形区域和冷却区域的输送构件，设置用于打开气体供给构件的第一和第二快门用于将非氧化气体引入室内。

12. 发明授权

US5965069A Method for making optical preforms and optical elements by press 失效
标题翻译：通过压制制造光学预成型件和光学元件的方法
公开(公告)号：US5965069A
公开(公告)日：1999-10-12
申请号：US787284
申请日：1997-01-24
申请人： Jun Murata , Takahisa Kondou , Masaaki Sunohara , Toshiaki Takano , Chizuo Izumino , Shoji Nakamura
发明人： Jun Murata , Takahisa Kondou , Masaaki Sunohara , Toshiaki Takano , Chizuo Izumino , Shoji Nakamura
IPC分类号： B26F1/38 , B29C33/00 , B29C33/38 , B29C37/00 , B29C43/02 , B29C43/36 , B29C43/38 , B29D11/00
CPC分类号： B29D11/00413 , B26F1/3846 , B29C37/0003 , B29C43/021 , B29C43/361 , B29C43/38 , B29D11/00932 , B29C2043/3618 , B29C33/0022 , B29C33/3814 , B29K2909/08 , B29L2011/0016 , Y10S425/808
摘要： A method for making optical preforms of optical elements without residual stress or distortion is provided. In this method, an optical material is supplied between upper and lower molds. The upper mold has a plurality of recesses arranged in a predetermined pitch, and each recess corresponds to a first surface shape of the optical element. The lower mold has a plurality of recesses facing the recesses of the upper mold and each recess of the lower mold corresponds to a second surface shape of the optical element. The supplied optical material is pressed between the upper and lower molds to be a set of optical preforms. The set of optical preforms is processed by die punching or tool cutting to separate each optical preform from the set of optical preforms. Each optical preform is used for producing an optical element by further pressing. Alternatively, optical element can be formed directly by the press molding process.
摘要翻译：提供了一种用于制造没有残余应力或变形的光学元件的光学预成型件的方法。在这种方法中，在上模和下模之间提供光学材料。上模具有以预定间距布置的多个凹部，并且每个凹部对应于光学元件的第一表面形状。下模具有面向上模的凹部的多个凹部，下模具的每个凹部对应于光学元件的第二表面形状。所供应的光学材料在上模和下模之间被压制成一组光学预型件。通过冲模或刀具切割处理该组光学预成型件，以将每个光学预成型件与该组光学预成型件分离。每个光学预型件用于通过进一步压制来生产光学元件。或者，可以通过压制成型工艺直接形成光学元件。

13. 发明授权

US4927247A Objective lens for optical disk system and optical head using the same 失效
标题翻译：物镜用于光盘系统和光头使用相同
公开(公告)号：US4927247A
公开(公告)日：1990-05-22
申请号：US343256
申请日：1989-04-26
申请人： Yasuhiro Tanaka , Masaaki Sunohara , Yasuo Nakajima , Shinichi Tanaka
发明人： Yasuhiro Tanaka , Masaaki Sunohara , Yasuo Nakajima , Shinichi Tanaka
IPC分类号： G01B13/24 , G02B13/00 , G02B13/10 , G02B13/24 , G11B7/135
CPC分类号： G11B7/1374 , G01B13/24 , G02B13/00 , G02B13/10 , G02B13/24
摘要： A lens controls the chromatic aberration of an objective lens for practical use in an optical disk system. The lens has first and second aspherical surfaces each providing a positive refractive power for focusing a light through a transparent plate and satisfies a condition: ##EQU1## where f.sub.L =focal length of the lens, d.sub.c =thickness of the transparent plate, n.sub.c =refractive index of the transparent plate, .lambda.=center wavelength of the light, NA=numerical apperture of the lens, .nu..sub.L =local dispersion of the lens, and .nu..sub.c =local dispersion of the transparent plate. The local dispersion of each element is expressed by: ##EQU2## where n.sub.80 is refractive index at a center wavelength .lambda. nm, n.sub..lambda. +5 a refractive index at .lambda.+5 nm, and n.sub..lambda. -5 a refractive index at .lambda.-5 nm.

14. 发明授权

US6007746A Method for manufacturing preforms used in molding optical elements and method for manufacturing and molding optical elements 失效
标题翻译：用于模制光学元件的预成型件的制造方法和用于制造和模制光学元件的方法
公开(公告)号：US6007746A
公开(公告)日：1999-12-28
申请号：US965955
申请日：1997-11-07
申请人： Jun Murata , Toshiaki Takano , Masaaki Sunohara
发明人： Jun Murata , Toshiaki Takano , Masaaki Sunohara
IPC分类号： B29B11/04 , B29C43/02 , B29C43/36 , B29D11/00 , B29K23/00 , B29L11/00
CPC分类号： B29B11/04 , B29C43/021 , B29C43/361 , B29D11/00009 , B29C2043/023 , B29C2043/3618 , B29C2791/008 , B29C2793/0081 , B29L2011/0016 , Y10S425/808
摘要： A method for manufacturing preforms used in molding optical elements includes: (1) forming an array made from a material for optical elements, in which a plurality of preform portions used in molding optical elements are connected; (2) applying vibration to the outer peripheral part of the preform portion in the thickness direction of the array by a pair of punches; and then (3) punching the preform portions.
摘要翻译：用于模制光学元件的预成型件的制造方法包括：（1）形成由用于模制光学元件的多个预成型件部分连接的用于光学元件的材料制成的阵列; （2）通过一对冲头对阵列的厚度方向的预制件部分的外周部分施加振动; 然后（3）冲压预制件部分。

15. 发明授权

US5322541A Method of producing glass blank 失效
标题翻译：生产玻璃毛坯的方法
公开(公告)号：US5322541A
公开(公告)日：1994-06-21
申请号：US857872
申请日：1992-03-26
申请人： Yoshiyuki Shimizu , Shoji Nakamura , Tadayoshi Yonemoto , Masaaki Sunohara , Tadao Shioyama , Noriyuki Kawata
发明人： Yoshiyuki Shimizu , Shoji Nakamura , Tadayoshi Yonemoto , Masaaki Sunohara , Tadao Shioyama , Noriyuki Kawata
IPC分类号： C03B11/08 , C03B11/00
CPC分类号： C03B11/08 , C03B2215/87 , Y02P40/57
摘要： A method of producing a glass blank, comprising the steps of: supplying a desired weight of molten glass material to a bearer heated to a temperature of not more than a softening point of the glass material; performing and cancelling, at a temperature of not less than the softening point, pressing of the glass material supplied to the bearer so as to adjust a thickness of the glass material; and cooling the glass material to a temperature of not more than the softening point.
摘要翻译：一种制造玻璃坯料的方法，包括以下步骤：将所需重量的熔融玻璃材料供应到加热至玻璃材料的软化点以下的温度的载体上; 在不低于软化点的温度下执行和取消对供给到承载件的玻璃材料的按压，以调节玻璃材料的厚度; 并将玻璃材料冷却至不高于软化点的温度。

16. 发明授权

US5188652A Machine for molding optical element 失效
标题翻译：成型光学元件机器
公开(公告)号：US5188652A
公开(公告)日：1993-02-23
申请号：US782363
申请日：1991-10-24
申请人： Shoji Nakamura , Takasi Inoue , Masaaki Sunohara , Tadao Shioyama
发明人： Shoji Nakamura , Takasi Inoue , Masaaki Sunohara , Tadao Shioyama
IPC分类号： C03B11/08
CPC分类号： C03B11/08 , C03B2215/73 , C03B2215/86
摘要： A machine is provided for molding an optical element by using a molding block having upper and lower molding dies, a sleeve die and a glass blank combined integrally with each other. The machine includes a chamber which accommodates a heating zone having a plurality of sections for heating the molding block from above and below, a deformation zone for pressing the molding dies and a cooling zone having a plurality of sections for cooling the molding block. The chamber is formed with an inlet and an outlet for the molding block. The sections of the heating zone, the deformation zone and the sections of the cooling zone are provided independently of one another. A transport member is provided for sequentially transporting the molding block through the heating zone, the deformation zone and the cooling zone, and first and second shutters are provided for opening gas supply member is provided for introducing nonoxidizing gas into the chamber.

17. 发明授权

US5160361A Method of manufacturing optical element 失效
标题翻译：制造光学元件的方法
公开(公告)号：US5160361A
公开(公告)日：1992-11-03
申请号：US712710
申请日：1991-06-10
申请人： Jun Murata , Masaaki Sunohara , Takayuki Kimoto
发明人： Jun Murata , Masaaki Sunohara , Takayuki Kimoto
IPC分类号： C03B11/08 , C03C15/00 , C03C23/00
CPC分类号： C03C15/00 , C03B11/08 , C03C23/0025 , C03C23/007
摘要： A method of manufacturing optical elements which is capable of obtaining optical elements at high accuracy by molding through employment of an optical element molding glass material preliminarily processed to prevent such defects as crack formation or chipping at the corner portions of the molding material which contact dies when the material is charged into the mold. An optical element molding glass material to be employed for the above method is formed with curvatures at boundary portions i.e. corner portions where its cylindrical portion contacts at right angles with its end flat portions by applying chemical etching, heat of a carbon dioxide gas laser or radiation heat to such corner portions. Meanwhile, in the manufacturing process of the optical element in which upper and lower dies and the preliminarily processed molding material are subjected to molding through heating and pressurization in a contacted state at all times, the molding pressure is arranged to be reduced at least one or reduced to zero to provide the optical element at high accuracy.

18. 发明授权

US5032160A Method of press molding lens material 失效
标题翻译：压模成型镜片材料的方法
公开(公告)号：US5032160A
公开(公告)日：1991-07-16
申请号：US417428
申请日：1989-10-05
申请人： Jun Murata , Masaaki Sunohara , Takayuki Kimoto
发明人： Jun Murata , Masaaki Sunohara , Takayuki Kimoto
IPC分类号： B29C43/00 , B29C43/02 , B29C43/36 , B29D11/00
CPC分类号： B29C43/021 , B29C43/361 , B29D11/00009 , B29C2043/3615 , B29C2043/3618 , B29C43/00 , B29L2011/0016
摘要： A lens molding method where a lens material is set between an upper mold and a lower mold, and the molding pressure is reduced or made zero at least once during a heating & pressing step without the mold surfaces breaking contact with the lens materials, and during a cooling & pressing step.

19. 发明授权

US4849151A Method of molding plastic and injection compression molding apparatus using elongatable tie bars 失效
标题翻译：使用可伸长的连接杆成型塑料和注射压缩成型设备的方法
公开(公告)号：US4849151A
公开(公告)日：1989-07-18
申请号：US132885
申请日：1987-12-09
申请人： Toru Tamura , Masaaki Sunohara , Akio Ito , Yoshio Nakatani
发明人： Toru Tamura , Masaaki Sunohara , Akio Ito , Yoshio Nakatani
IPC分类号： B29C45/56 , B29C45/64
CPC分类号： B29C45/64 , B29C45/561
摘要： A method of molding a plastic is initiated by injecting molten resin into a mold at a high pressure. The energy of the high pressure is partially stored in the form of elongation of tie bars of a molding machine. After the gate seals completely, the restoring force of the tie bars due to elastic deformation acts on the molded article as the mold article cools down. Each tie bar comprises a first member having a small modulus of elasticity and a second member. When the elongation of each tie bar is small, only the first member of small modulus of elasticity works. After the elongation reaches a certain amount of .DELTA.l.sub.1, the two members are connected parallel. As a result, the apparent modulus of elasticity of each tie bar increases rapidly. This makes it possible to mold a plastic with high dimensional accuracy.

20. 发明授权

US4701770A Substrate for an optical disc 失效
标题翻译：基板用于光盘
公开(公告)号：US4701770A
公开(公告)日：1987-10-20
申请号：US873405
申请日：1986-06-12
申请人： Akio Ito , Hideaki Mochizuki , Masaaki Sunohara , Tooru Tamura
发明人： Akio Ito , Hideaki Mochizuki , Masaaki Sunohara , Tooru Tamura
IPC分类号： G11B7/24 , C08G64/04 , C08K5/524 , G11B7/243 , G11B7/2433 , G11B7/253 , G11B7/2534 , G11B7/258 , G11B7/2585 , G01D9/00 , G01D15/10 , G03C1/495 , G03C1/76
CPC分类号： C08G64/04 , C08K5/524 , G11B7/2534 , G11B2007/24304 , G11B7/2433 , G11B7/2585 , Y10S430/146
摘要： There is provided an optical disc of high reliability, with the recording film protected from deterioration. The optical disc of this invention is produced by forming a tellurium suboxide film or optomagnetic recording film on a substrate made by injection molding from a polycarbonate resin. The substrate is made from a polycarbonate resin containing a phosphite ester-based antioxidant in a specific low amount.
摘要翻译：提供了高可靠性的光盘，防止了记录膜的劣化。本发明的光盘通过在由聚碳酸酯树脂注射成型的基板上形成低氧化碲膜或光磁记录膜来制造。基板由含有特定量的亚磷酸酯类抗氧化剂的聚碳酸酯树脂制成。

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