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1. 发明专利

JPH0585881B2 失效
公开(公告)号：JPH0585881B2
公开(公告)日：1993-12-09
申请号：JP16371984
申请日：1984-08-03
申请人： NIPPON SHEET GLASS CO LTD , OTSUKA YASUJI
发明人： OOTSUKA YASUJI , KOIKE YASUHIRO , AOKI JUICHI , TAKIGAWA AKIO , MAEDA KOICHI , TAGO IKUO , YOSHIDA MOTOAKI
IPC分类号： G02B1/04 , B29C35/08 , B29C39/02 , B29C39/26 , B29K105/32 , B29L11/00 , C08F2/48 , G02B3/00

2. 发明专利

JPS60103314A PRODUCTION OF PLASTIC OPTICAL TRANSMISSION BODY 失效
公开(公告)号：JPS60103314A
公开(公告)日：1985-06-07
申请号：JP21219083
申请日：1983-11-11
申请人： NIPPON SHEET GLASS CO LTD , OTSUKA YASUJI
发明人： OOTSUKA YASUJI , MAEDA KOUICHI , YOSHIDA MOTOAKI , AOKI YUUICHI , KOIKE YASUHIRO
IPC分类号： C08F2/00 , G02B1/04 , G02B6/00 , G02B6/028
摘要： PURPOSE:To obtain a titled optical transmission body having less aberration by diffusing and polymerizing successively plural kinds of monomers forming the polymer having the refractive index different from the refractive index of the polymer of a transparent gel-like base material having self-shape holdability at intervals on said base material. CONSTITUTION:A monomer forming a network polymer (e.g. diethylene glycol bisallyl carbonate) is incompletely polymerized to form a transparent gel-like base material having self-shape holdability. A monomer (e.g.; styrene) which forms the polymer having the refractive index different from the refractive index of the network polymer is polymerized while said monomer is diffused to the transparent gel-like base material. After the monomer is diffused, one kind or plural kinds of monomers (e.g.; ethyl methacrylate) different from the diffused monomer is polymerized while said monomer is diffused at intervals to said monomer in the stage of progression of the polymerization of the base material, by which the intended plastic optical transmission body is obtd.

3. 发明专利

JPH0576602B2 失效
公开(公告)号：JPH0576602B2
公开(公告)日：1993-10-25
申请号：JP25288084
申请日：1984-11-30
申请人： NIPPON SHEET GLASS CO LTD , OTSUKA YASUJI
发明人： OOTSUKA YASUJI , KOIKE YASUHIRO , MAEDA KOICHI , TAKIGAWA AKIO , AOKI JUICHI , TAGO IKUO , YOSHIDA MOTOAKI
IPC分类号： C08F2/00 , C08F2/02 , G02B3/00 , G02B6/00 , G02B6/028 , G02B6/18

4. 发明专利

JPH01319703A PLASTIC LIGHT DIVERGING ELEMENT AND ITS PRODUCTION 失效
公开(公告)号：JPH01319703A
公开(公告)日：1989-12-26
申请号：JP15407888
申请日：1988-06-22
申请人： NIPPON SHEET GLASS CO LTD , OTSUKA YASUJI
发明人： OTSUKA YASUJI , KOIKE YASUHIRO , MAEDA KOICHI , YOSHIDA MOTOAKI
IPC分类号： G02B6/00 , G02B6/028
摘要： PURPOSE:To obtain a plastic light diverging element having improved light diverging efficiency and to provide a process for producing the element by forming a light scattering surface from an external peripheral surface a plastic light transmitting body wherein a refractive index distribution contains gradually increasing refractive index from a central axis toward periphery towards the light scattering surface. CONSTITUTION:A transparent self shape-retaining gel-type base material is formed by polymerizing incompletely one or plural kinds of monomer Ma capable of providing a reticular polymer Pa having a refractive index Na. One or plural kinds of monomer Mb which form(s) a polymer Pb (having a refractive index expressed by Nb, wherein Na

5. 发明专利

JPS60175009A PRODUCTION OF PLASTIC OPTICAL ELEMENT HAVING REFRACTIVE INDEX DISTRIBUTION 失效
公开(公告)号：JPS60175009A
公开(公告)日：1985-09-09
申请号：JP3113884
申请日：1984-02-21
申请人： NIPPON SHEET GLASS CO LTD , OTSUKA YASUJI
发明人： OOTSUKA YASUJI , KOIKE YASUHIRO , AOKI YUUICHI , TAKIGAWA AKIO , MAEDA KOUICHI , TAGO IKUO , YOSHIDA MOTOAKI
IPC分类号： C08F2/00 , B29D11/00 , C08F2/02 , G02B1/04 , G02B6/00
摘要： PURPOSE:To obtain easily an element having a refractive index distribution by polymerizing partly a monomer to form a transparent gel-like material, adding another monomer which provides a polymer having a different refractive index to the surface, diffusing the monomer from the surface in a perpendicular direction to polymerize the monomers and subjecting the polymer to curving. CONSTITUTION:A monomer Ma forming a net-like polymer having a refractive index Na (e.g., diallyl phthalate) is poured into a cylindrical vessel 2 and is partly polymerized by heating to form a transparent gel object 1. A monomer Mb which forms a polymer having the refractive index different from the refractive index of Na (e.g., ethyl acrylate) is poured onto the surface of the object 1 and is diffused from the surface in a perpendicular diretion; at the same time said monomers are polymerized by heating to form a refractive index distribution in which the refractive index changes continuously in one direction into the object 1. The object is heated in succession to complete the polymn. and to fix the refractive index distribution. The one surface of the resulted plymer is worked to have a curved surface by which the optical element having the refractive index distribution is obtd.

6. 发明专利

JPS60149414A PREPARATION OF SYNTHETIC RESIN ARTICLE WITH REFRACTION INDEX DISTRIBUTION 失效
公开(公告)号：JPS60149414A
公开(公告)日：1985-08-06
申请号：JP647884
申请日：1984-01-18
申请人： NIPPON SHEET GLASS CO LTD , OTSUKA YASUJI
发明人： OONO YASUJI , KOIKE YASUHIRO , AOKI YUUICHI , TAKIGAWA AKIO , MAEDA KOUICHI , TAGO IKUO , YOSHIDA MOTOAKI
IPC分类号： B29C39/02 , B29C39/22 , B29K105/32 , B29L11/00
摘要： PURPOSE:To obtain the titled article excellent in spherical aberration and suitable for a spherical lens etc. by a method wherein mixture of monomers different in polymer refraction index and monomer reactivity ratio is polymerized equally in a container and deposited polymer is sedimented by gravity etc. into a gel state and then heated. CONSTITUTION:Polymerization initiator such as benzoyl peroxide etc. is added to a mixture of two kinds of monomers different in refraction index as a polymer and monomer reactivity ratio, such as the mixture 1 of monomers of ethylene glycol dimethacrylate and 2,2,2-trifluoroethylmethacrylate to be filled in a container of a molding die 2 etc. Polymerization reaction is progressed uniformly in the mixture of monomers 1, deposited polymer is sedimented by gravity and/ or inertia to gel the whole mixture of monomers and then the gelled mixture of monomers and then the gelled mixture of monomers is heated finally and polymerized completely to obtain the desired is heated finally and polymerized completely to obtain the desired arycle.

7. 发明专利

JPS62222203A PRODUCTION OF OPTICAL ELEMENT COMPOSED OF SYNTHETIC RESIN 失效
公开(公告)号：JPS62222203A
公开(公告)日：1987-09-30
申请号：JP6515786
申请日：1986-03-24
申请人： NIPPON SHEET GLASS CO LTD , OTSUKA YASUJI
发明人： OTSUKA YASUJI , KOIKE YASUHIRO , MAEDA KOICHI , TAKIGAWA AKIO , TAGO IKUO , YOSHIDA MOTOAKI
IPC分类号： G02B3/00 , B29C39/02 , B29L11/00
摘要： PURPOSE:To form a buried optical element in a plane base integrally by burying a mixture of plural kinds of monomers into the hole provided for the plane base which is composed of the material having good affinity for at least one of the components in said mixture. CONSTITUTION:In the plural kinds of the monomers having different refractive indexes of the polymers respectively, a ratio of reactivity of the prescribed monomer Mi to the another monomer Mj is Rij, and the ratio of reactivity of the monomer Mj to the monomer Mi is Rji. The mixing mol ratio of the monomer Mi and Mj is (Mi/Mj)m. The plural kinds of monomer mixture having >=(1.1) or

8. 发明专利

JPS6232401A PRODUCTION OF SYNTHETIC RESIN SPHERICAL LENS 失效
公开(公告)号：JPS6232401A
公开(公告)日：1987-02-12
申请号：JP17212685
申请日：1985-08-05
申请人： NIPPON SHEET GLASS CO LTD , OTSUKA YASUJI
发明人： OTSUKA YASUJI , KOIKE YASUHIRO , MAEDA KOICHI , TAKIGAWA AKIO , AOKI YUICHI , TAGO IKUO , MASE SHOJI , YOSHIDA MOTOAKI
IPC分类号： G02B1/04 , C08F2/18 , C08F291/00 , G02B3/00
摘要： PURPOSE:To form transparent spherical gel particles to be used as a base material for a graded index type spherical lens made of a synthetic resin so as to have a specified grain size by dropping the sols formed by a preliminary polymn. of a monomer by each drop and charging the sols in the stage of producing the above-mentioned particles by a suspension polymn. CONSTITUTION:The thoroughly spherical gel particles can be obtd. and the production in a large amt. at one time is possible if the suspension polymn. is adopted as a process for producing the transparent spherical gel particles. The coalescence and detachment of the particles during the suspension polymn. can be largely prevented if the preliminarily polymerized sols are charged in place of the monomer; therefore, the grain size fractions of the resultant gel particles can be substantially diminished. The sols are dropped by each drop in this stage and if the volume of one drop is uniform, the coalescence, detachment, etc. of the particles do not arise at all and the grain size of the resultant transparent gel particles is thoroughly constant. The synthetic resin spherical lenses each having the refractive index in which the refractive indices change in the normal direction from the center of the sphere toward the periphery are thus mass-produced by the subsequent diffusion and heat treatment stages.

9. 发明专利

JPS61206631A MANUFACTURE OF GRADIENT REFRACTIVE INDEX TYPE SYNTHETIC RESIN SPHERICAL LENS 失效
公开(公告)号：JPS61206631A
公开(公告)日：1986-09-12
申请号：JP4862485
申请日：1985-03-12
申请人： NIPPON SHEET GLASS CO LTD , OTSUKA YASUJI
发明人： OTSUKA YASUJI , KOIKE YASUHIRO , MAEDA KOICHI , TAKIGAWA AKIO , AOKI YUICHI , TAGO IKUO , MASE SHOJI , YOSHIDA MOTOAKI
IPC分类号： C08F291/00 , B29D11/00 , C08F2/02 , C08F2/18 , G02B1/04
摘要： PURPOSE:To enable to manufacture a large quantity of perfectly spherical gel particles at a time by a method wherein suspension polymerization is employed as the method to manufacture transparent spherical gel particles. CONSTITUTION:Monomer Ma to form reticular polymer Pa with refractive index Na is put in the predetermined vessel together with initiator, solvent and dispersant so as to suspension- polymerize at the predetermined temperature T1 deg.C, for the predetermined period of time t1 at the predetermined rotational frequency r1 (rpm) in order to manufacture a large quantity of transparent spherical gel particles at a time by polymerizing the monomer partially. The transparent gel particles are separated from the polymerized system by vacuum filtering. Next, said separated particles are added in a vessel containing monomer M to form polymer P with refractive index N , which is different from said Na, so as to polymerize at the predetermined temperature T2 deg.C for the predetermined period of time t2 in order to deffuse the monomer M from the surface to the center of the sphere and at the same time to polymerize, resulting in forming the distribution of refractive indices, which continuously change in the normal direction from the center to the periphery of the sphere. The resultant particles are separated from the system by vacuum filtering and dispersed into the water heated at the predetermined temperature T3 deg.C in the predetermined vessel in order to be heat-treated at the predetermined temperature t3 and rotational frequency r3 (rpm).

10. 发明专利

JPS61170705A PRODUCTION OF SYNTHETIC RESIN OPTICAL TRANSMISSION BODY 失效
公开(公告)号：JPS61170705A
公开(公告)日：1986-08-01
申请号：JP1161785
申请日：1985-01-24
申请人： NIPPON SHEET GLASS CO LTD , OTSUKA YASUJI
发明人： OTSUKA YASUJI , KOIKE YASUHIRO , MASE SHOJI , YOSHIDA MOTOAKI , TAKIGAWA AKIO , MAEDA KOICHI , AOKI YUICHI , TAGO IKUO , FUCHIGAMI YASUHIRO
IPC分类号： G02B6/00 , B29C39/42 , B29L11/00 , G02B3/00 , G02B6/028
摘要： PURPOSE:To prevent the contamination of a monomer mixture and to maintain the specified refractive index of an optical transmission body by supplying successively the monomer mixture from the outside into a tube in synchronization with the moving speed of the tube. CONSTITUTION:The forming tube 2 is fed from the bottom end side by a driving mechanism into a polymn. treating chamber 3. A valve 13 is opened by a detection signal from a sensor 11 and the monomer mixture 1 in a storage tank 10 flows into the tube 2 when the liquid surface 1A of the monomer mixture 1 falls below the sensor. The supply is stopped on rising of the liquid surface 1A above the sensor 11. The level of the liquid surface 1A of the mixture 1 in the tube 2 is maintained always in the position of the sensor 11, i.e., near the inlet of the light irradiating area while the tube 2 in fed in the chamber 3 at a constant speed. The monomer mixture 1 in the chamber 3 is irradiated with light 14 and the polymn. progresses from the inside wall side of the tube toward the center. The contamination by the polymer component of the monomer mixture in an unreacted state is thereby substantially eliminated and the variance in the refractive index distribution of a lens is considerably decreased.

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