公开(公告)号：JP2000103625A

公开(公告)日：2000-04-11

申请号：JP21734499

申请日：1999-07-30

Applicant: HOYA CORP

Inventor： ARAI SOJI ,  NISHII YOSHIKAZU

IPC: C03B5/225 ,  C03B5/43 ,  C03B37/02 ,  C03C3/062 ,  C03C3/064 ,  C03C3/066 ,  C03C3/068 ,  C03C3/072 ,  C03C3/074 ,  C03C3/085 ,  C03C3/087 ,  C03C3/091 ,  C03C3/093 ,  C03C3/095 ,  C03C3/097 ,  C03C3/105 ,  C03C3/108 ,  C03C13/00

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a glass material whose outer light transmittance in the UV light region is improved by preventing coloration and whose inner light transmittance in the UV light region is improved by eliminating bubbles, and to provide a method for producing glass fibers. SOLUTION: This method for producing a glass material comprises (A) a process for melting a raw material mixture in a glassy state, (B) a process for clarifying and homogenizing the glassy melted product obtained in the process A in a crucible not containing platinum and subsequently molding the melted product, and (C) a process for cooling the molded product into the glass mass. The method for producing the glass fibers comprises spinning the glass material obtained by the above method in a spinning oven.

公开(公告)号：JPS6270245A

公开(公告)日：1987-03-31

申请号：JP20852885

申请日：1985-09-20

Applicant: HOYA CORP

Inventor： NISHIZAKI KENICHI ,  NISHII YOSHIKAZU

IPC: C03C3/064 ,  C03C3/093 ,  C03C13/04 ,  G02B6/00 ,  G02B6/02

Abstract: PURPOSE:To provide an environment-resistant optical fiber having excellent acid resistance, water-resistance, solubility, etc., large numerical aperture and low transmission loss and produced by using a core glass composed of SiO2, Al2O3, ZrO2 BaO, B2O3 and alkaline (earth) metal oxide. CONSTITUTION:A glass consisting of 25-45(wt)% SiO2, 1-8% Al2O3, 1-7% ZrO2 (Al2O3+ZrO2=3-15%), 30-50% BaO, 5-17% B2O3, 0-10% K2O, 0-10% Na2O, 0-5% Li2O (K2O+Na2O+Li2O=3-11%), 0-4% CaO, 0-4% ZnO and 0-4% MgO (CaO+ZnO+MgO=1-6%) is prepared beforehand. The objective optical fiber is produced by using the glass as the core glass. Since the core glass has relatively high refractive index of about 1.58-1.62, an optical fiber having high numerical aperture can be produced.

公开(公告)号：JP2003071213A

公开(公告)日：2003-03-11

申请号：JP2002180155

申请日：2002-06-20

Applicant: Hoya Corp ,  Hoya株式会社

Inventor： HIGASHIDA MASAYUKI ,  NISHII YOSHIKAZU ,  UCHIDA KAZUYA

IPC: B01D39/00 ,  B01D39/14 ,  B01D39/20 ,  B01D53/86 ,  B01J35/02 ,  B01J35/06

Abstract: PROBLEM TO BE SOLVED: To efficiently mass-produce homogeneous linear products to the peripheries of which lots of granules are adhered. SOLUTION: An adhesion method for making quartz glass balls 3 be adhered to the periphery of each of numbers of glass fibers has a pretreatment process for forming a mixture in which lots of quartz glass balls 3 exist among a plurality of glass fibers 1, and an adhesive 4 exists between the glass fiber 1 and the quartz glass ball 3 and an adhesive curing process for drying or curing the adhesive while the glass fibers 1 are moved relatively to each other by applying acceleration movement such as vibration and swinging to the mixture.

Abstract translation: 要解决的问题：为了有效地大量生产均匀的线性产品到附着大量颗粒的周边。 解决方案：用于制造石英玻璃球3的粘合方法附着在每个数量的玻璃纤维的周围，具有用于形成多个玻璃纤维1之间存在大量石英玻璃球3的混合物的预处理工艺， 粘合剂4存在于玻璃纤维1和石英玻璃球3之间，并且通过施加诸如振动和摆动的加速度运动使玻璃纤维1彼此相对移动来干燥或固化粘合剂的粘合剂固化方法。

公开(公告)号：JP2002102623A

公开(公告)日：2002-04-09

申请号：JP2000301692

申请日：2000-10-02

Applicant: HOYA CORP

Inventor： HIGASHIDA MASAYUKI ,  NISHII YOSHIKAZU

IPC: B01D39/14 ,  B01D39/00 ,  B01D39/06 ,  B01J35/02 ,  B01J37/02 ,  C09J5/00

Abstract: PROBLEM TO BE SOLVED: To mass-produce a homogenous linear article having a large number of granules bonded to the periphery thereof, with good productivity. SOLUTION: A bonding method has a pretreatment process for forming such a state that a large number of granules are interposed between a large number of linear articles and an adhesive is present between these linear articles and granules, an adhesive absorbing process for bringing an adhesive absorbing member into contact with the periphery of the linear article bundle, which is formed by bundling a large number of the linear articles while keeping the state formed in the pretreatment process, to absorb a part of the adhesive supplied to the gaps between a large number of the linear articles and an adhesive curing process for releasing the linear article bundle to cure the adhesive in such a state that a large number of the granules are held to the surfaces of the linear articles by the adhesive.

公开(公告)号：JPH1142733A

公开(公告)日：1999-02-16

申请号：JP20036597

申请日：1997-07-25

Applicant: HOYA CORP

Inventor： HIGASHIDA MASAYUKI ,  NISHII YOSHIKAZU

IPC: G02B5/30 ,  B01J35/02 ,  B32B7/02 ,  B32B9/00

Abstract: PROBLEM TO BE SOLVED: To reduce the quantity of the reflected light from a photocatalyst layer in a transparent plate using a photocatalyst layer. SOLUTION: A transparent plate is constituted by providing a phase difference membrane 2 and a polarizing membrane 3 on the inside surface of a photocatalyst layer 1 composed of titanium dioxide. The phase difference membrane 2 is a 1/4 phase difference membrane imparting a phase difference of 45 deg. to the gap of linear polarized lights mutually vibrated in a vertical direction. When light is applied to the photocatalyst layer 1 from the outside, the org. matter bonded to the surface of the photocatalyst layer 1 is decomposed by the action 2 of a photocatalyst. The light going toward the photocatalyst layer 1 from an internal polarizing membrane 3 becomes linearly polarized light vibrated in the transmitted polarized light direction of the polarizing membrane 3 to pass through the polarizing membrane 3. When the phase difference between two linearly polarized light components vibrated in the directions mutually crossing at a right angle of the linearly polarized light is considered, since the phase difference is changed by 90 deg. during a period when light is reflected by the photocatalyst layer 1 to reciprocate through the phase difference membrane 2, the reflected light from the photocatalyst layer 1 is almost perfectly blocked by the polarizing membrane 3.

公开(公告)号：JPH1072234A

公开(公告)日：1998-03-17

申请号：JP24884496

申请日：1996-08-30

Applicant: HOYA CORP

Inventor： HACHITANI YOICHI ,  NISHII YOSHIKAZU

IPC: A61L9/00 ,  B01J32/00 ,  B01J35/02 ,  C02F1/30 ,  C02F1/72 ,  C03C3/064 ,  C03C3/091 ,  C03C3/093

Abstract: PROBLEM TO BE SOLVED: To obtain a glass material capable of suppressing the deterioration of the activity of a photocatalyst by using low alkali silicate glass contg. specified amts. of SiO2 and alkali components, aluminosilicate glass, borosilicate glass or alkali-free glass. SOLUTION: Starting materials for glass are weighed and mixed so as to obtain a desired compsn. and the resultant mixture is melted by heating at 1,200-1,650 deg.C for 2-4hr, homogenized by stirring, refined, poured into a casting mold and slowly cooled to obtain the objective glass material for carrying a photocatalyst having >=75% transmissivity at the wavelength of light exciting the photocatalyst in the case of 10mm thickness. This glass material has a compsn. contg., by weight, 30-70% SiO2 , 1-35% Al2 O3 , 0-20% MgO, 0-20% CaO, 0-20% SrO, 0-40% BaO, 0-20% ZnO, 0-10% Li.0, 0-10% Na2 O, 0-10% K2 O and 0-10% Cs2 O (0%

公开(公告)号：JPH04331743A

公开(公告)日：1992-11-19

申请号：JP9893191

申请日：1991-04-30

Applicant: HOYA CORP

Inventor： NISHII YOSHIKAZU

IPC: C03C3/078 ,  C03C3/095 ,  C03C10/04 ,  C03C10/14 ,  G11B5/127

Abstract: PURPOSE:To provide crystallized glass satisfying all of (1) processability, (2) heat resistance, (3) high expansibility and expansion coefficient-matching property, (4) abrasion resistance and high hardness, and (5) chemical durability (weather resistance) which are characteristics required for sendust magnetic head substrates, and suitable for the substrates of the sendust magnetic heads. CONSTITUTION:Crystallized glass characterized by containing 100 pts.wt. of basic glass comprising 73-83wt.% of SiO2, 5-13wt.% of Li2O, 1-8wt.% of K2O, 0.5-9wt.% of ZnO, 0-10wt.% of SrO, 0-8wt.% of Gd2O3, and 5-13wt.% of ZnO+ SrO+Gd2O3, 0.001-0.1 pt.wt. of Ag, 0-0.1 pt.wt. of Au, 0-0.1 pt.wt. of CeO and 0-0.2 pt.wt. of SnO2 wherein the main crystal of the crystal phase produced by a thermal treatment comprises lithium disilicate and alpha-quartz.

公开(公告)号：JP2002292235A

公开(公告)日：2002-10-08

申请号：JP2001102518

申请日：2001-03-30

Applicant: HOYA CORP

Inventor： NISHII YOSHIKAZU ,  HAMA JUNPEI

IPC: B01D53/26

Abstract: PROBLEM TO BE SOLVED: To provide a humidity controller which can control humidity of a gas to be treated by simple constitution and a photocatalytic device which can display high decomposition removing ability by adjusting humidity corresponding to a component to be treated contained in the gas to be treated. SOLUTION: The humidity controller has a condensation part which condenses and removes moisture in the gas to be treated. Further the photocatalytic device has the humidity controller and a photocatalytic reactor in which the gas to be treated of adjusted humidity is treated by photocatalytic action.

公开(公告)号：JPH09225262A

公开(公告)日：1997-09-02

申请号：JP4138296

申请日：1996-02-28

Applicant: HOYA CORP

Inventor： NISHII YOSHIKAZU ,  HIGASHIDA MASAYUKI

IPC: G02B6/02 ,  B01D53/86 ,  B01D53/94 ,  B01J21/06 ,  B01J23/02 ,  B01J23/06 ,  B01J23/10 ,  B01J23/28 ,  B01J23/30 ,  B01J23/46 ,  B01J23/745 ,  B01J35/02 ,  B01J35/04 ,  B01J35/06

Abstract: PROBLEM TO BE SOLVED: To obtain a photocatalytic filter capable of efficiently demonstrating the photocatalytic function by irradiating the photocatalyst directly with light from the inside of a light transmission body carrying the photocatalyst. SOLUTION: A fiber like material is formed as an optical fiber by carrying the photocatalyst 2 corresponding to a clad of an optical fiber on the surface of the light transmission body 1 corresponding to a core. And the light transmission body 1 is made of a material selected from glass, ceramic or the like. And as the photocatalyst 2, titanium oxide or its compound, iron oxide or its compound or the like is used. By irradiating directly the photocatalyst 2 with light from the inside of the light transmission body 1 in a photocatalyst fiber 11 composed of the light transmission body 1 carrying the photocatalyst 2 in this way, the light irradiation is efficiently executed and the photocatalytic reaction is accelerated.

公开(公告)号：JP2000005691A

公开(公告)日：2000-01-11

申请号：JP17194398

申请日：1998-06-18

Applicant: HOYA CORP

Inventor： HIGASHIDA MASAYUKI ,  NISHII YOSHIKAZU

IPC: B01D39/14 ,  B01J21/06 ,  B01J35/02 ,  B01J35/06 ,  B05C9/12 ,  B05D1/30

Abstract: PROBLEM TO BE SOLVED: To efficiently manufacture a filter material through forming a homogenous coated layer on plural bases simultaneously by blowing air to the bases in such a state that a coating liquid containing a support component is present on the surface of the bases and desorbing the surplus coating liquid and at the same time, drying the coating liquid adhering to the bases. SOLUTION: In order to manufacture the filter material, first a plurality of glass fibers 3 as fibrous materials are accommodated in a jig 4 and a lid 5 is placed on the upper face of the jig 4 and at the same time, a metal plate 6 is arranged on the side face of the jig 4. Next the jig 4 is soaked in a coating liquid 8 containing an adhesive component and a photocatalytic substance which are stored in a container 7, and the coating liquid 8 is applied on the surface of the glass fiber 3. After that, the jig 4 is pulled up from the coating liquid 8 and air is blown off to the entire surface of the glass fiber 3 using an air blow-off device 9 before the pieces of the glass fiber 3 could adhere to each other. In this case, the surplus coating liquid 8 is desorbed by blowing off the air in a zigzag fashion and at the same time, the required coating liquid 8 is dried.