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1. 发明专利

JPH0357629A PRODUCTION OF INTRAOCULAR LENS 失效
公开(公告)号：JPH0357629A
公开(公告)日：1991-03-13
申请号：JP19355789
申请日：1989-07-26
申请人： HOYA CORP
发明人： YOSHIDA KAZUO , KAGEYAMA MAYUMI , OKADA REISUKE
IPC分类号： G02C7/04 , A61L27/00 , B29D11/00 , B29D11/02 , C08J7/00
摘要： PURPOSE:To obtain an introcular lens which is capable of lowering permeability of ultraviolet rays harmful to organisms while holding excellent permeability of visible light and capable of being safely utilized in the organisms by implanting an ion with an ion implantation method into the intraocular lens which is formed of polymeric material transparent for visible light. CONSTITUTION:PMMA resin is utilized especially preferably as the polymeric material of an artificial crystalline lens. All ions excepting an element having concern about toxicity for organisms can be utilized as the ions implanted into the surface layer of the artificial crystalline lens. Expecially the respective ions of H2, C, N2, O2, He, Ne, Ar, Kr and Xe are preferably utilized. These may be independently implanted and a plurality of kinds of ions may be implanted. The surface layer of the artificial crystalline lens with ions implanted thereinto incorporates bonding of carbonaceous substance while keeping the polymeric material formed of a base material as a substrate and absorption in an ultraviolet region is enhanced.

2. 发明专利

JPH033132A MONOMER COMPOSITION FOR PRODUCTION OF OPTICAL DISK 失效
公开(公告)号：JPH033132A
公开(公告)日：1991-01-09
申请号：JP13809489
申请日：1989-05-31
申请人： HOYA CORP
发明人： KAGEYAMA MAYUMI , OKUBO TAKESHI , OKADA REISUKE , SAWAMOTO TAKEYUKI
IPC分类号： C08F299/00 , B29D17/00 , C08F290/00 , C08F290/04 , G11B7/24 , G11B7/244 , G11B7/254 , G11B7/257
摘要： PURPOSE:To improve properties such as low absorptivity for water, heat resistance and hardness of a disk and to obtain proper viscosity in the molding process by incorporating stylene macro monomers containing polystylene units in its main chain and at least one ethylene unsatd. group in the end of chain into monomers for production of optical disks. CONSTITUTION:The monomer composition for production of optical disks can be obtained by incorporating stylene macro monomers containing polystylene units in the main chain and at least one ethylene unsatd. group in the end of chain into the monomers used for production of optical disks. This monomer composition is applied on a recording film provided on an optical disk substrate, and hardened to form a protective film. Or otherwise, this monomer composition is used particularly preferably for the production of an optical disk substrate by providing a resin layer with a rugged pattern on a transparent substrate by 2P method. This composition features such properties that its viscosity can be controlled to the optimum state for molding, and thickness of films can be easily controlled without including bubbles in films.

3. 发明专利

JPH02200430A DATA RECORDING MEDIUM 失效
公开(公告)号：JPH02200430A
公开(公告)日：1990-08-08
申请号：JP2054489
申请日：1989-01-30
申请人： HOYA CORP
发明人： KAGEYAMA MAYUMI , OKUBO TAKESHI , OKADA REISUKE
IPC分类号： G11B7/257 , B32B27/00 , G11B7/24
摘要： PURPOSE:To enhance workability and the dimensional stability, hardness, heat resistance, low water absorbability and storage stability of an ultraviolet cured resin layer by constituting the ultraviolet cured resin layer of the ultraviolet cured material of a monomer composition containing a specific monomer. CONSTITUTION:An ultraviolet cured resin layer and a recording layer are successively laminated to the single surface or both surfaces of a substrate. The ultraviolet cured resin layer is constituted of the ultraviolet cured material of a monomer composition containing a monomer represented by formula I (wherein R1 is a hydrogen atom or a methyl group) and a monomer represented by formula II (wherein R2 is a hydrogen atom or a methyl group).

4. 发明专利

JPH02289941A SUBSTRATE FOR INFORMATION RECORDING MEDIUM 失效
公开(公告)号：JPH02289941A
公开(公告)日：1990-11-29
申请号：JP11149489
申请日：1989-04-28
申请人： HOYA CORP
发明人： OKUBO TAKESHI , KAGEYAMA MAYUMI , OKADA REISUKE , SAWAMOTO TAKEYUKI
IPC分类号： B32B7/02 , B32B27/30 , C08F20/30 , G11B7/24 , G11B7/253 , G11B7/257
摘要： PURPOSE:To obtain the information recording medium having excellent recording and reproducing characteristics and preservable stability by constituting at least a part of a substrate of a polymer contg. a specific monomer as an essential monomer component. CONSTITUTION:At least a part of the substrate for the information recording medium forming the information recording medium provided with a recording layer is constituted of the polymer contg. the monomer expressed by the formula I as the essential monomer component. For example, grooves of a rugged shape consisting of the polymer are formed on a flat plate base material. In the formula, l1, l2 are integer and may be the same or different numbers; m1, m2 are 0 to 5 integer and may be the same or different numbers; R1, R2 denote a hydrogen atom or methyl group and may be the same or different. The substrate for the information recording medium having high molding accuracy, easy release property, small double refractions, high surface hardness and heat resistance, small water absorbance and excellent preservable stability is obtd. in this way.

5. 发明专利

JPH01244762A CONTACT LENS 失效
公开(公告)号：JPH01244762A
公开(公告)日：1989-09-29
申请号：JP7355988
申请日：1988-03-28
申请人： HOYA CORP
发明人： KAGEYAMA MAYUMI , SAWAMOTO TAKEYUKI , TARUMI JIRO , SAKAI YUJI
IPC分类号： A61L27/00 , A61L27/18 , A61L27/50
摘要： PURPOSE:To improve the mechanical properties and intra-ocular stability of the lens by consisting the optical part or the optical part and supporting part of a soft polymer prepd. by curing a specific compsn. CONSTITUTION:The optical part or the optical part and supporting part are constituted of the soft polymer obtd. by curing the compsn. contg. (a) a dimethyl siloxane-phenyl siloxane copolymer having vinyl groups at both terminals of the molecular chain and (b) polydiorganosiloxane having >=3 hydrosilyl groups in one molecule. A filler and/or UV absorbent may be incorporated into the above-mentioned compsn. in this case. The used component (a) constitutes the essential component of soft silicone rubber after curing. Further, the hydrosilyl group in the component (b) is bonded and crosslinked by reaction with the vinyl group in the component (a) and is the essential component for forming the silicone rubber.

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