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    GAS TREATMENT APPARATUS AND GAS TREATMENT FILTER
    5.
    发明专利
    GAS TREATMENT APPARATUS AND GAS TREATMENT FILTER 失效

    公开(公告)号：JPH11183728A

    公开(公告)日：1999-07-09

    申请号：JP35093997

    申请日：1997-12-19

    Applicant: HOYA CORP

    Inventor： NISHII YOSHIKAZU ,  TSUKADA SHOGO ,  OGAWA SHINICHI ,  HIGASHIDA MASAYUKI ,  TOMA YOJI ,  ARAI SOJI ,  WATANABE ITARU

    IPC: G02B6/00 ,  B01D53/86 ,  B01J35/02

    Abstract: PROBLEM TO BE SOLVED: To obtain a gas treatment apparatus and gas treatment filter which are capable of efficiently developing a photocatalytic reaction and are small in size and high in treatment capacity. SOLUTION: The gas treatment unit 1 has a multiplicity of photocatalytic fibers 3 held between metallic filters 2 as air permeable members in a bundled state. Photocatalytic fiber 3 is formed by depositing a photocatelyst having the refractive index higher than the refractive index of a fiber-like guide body having projections on the surface of the light guide body. The gas to be treated flows through the gaps of the many photocatalyst fibers 3 bundled between the metallic filters 2. On the other hand, the UV rays from a UV light 6 are cast to the end faces of the photocatalystic fibers 3 and leaks out to the photocatalyst on the surface of the light guide bodies while propagating in the photocatalytic fibers 3. At this time, the malodorous components, etc., included in the gas are brought into contact with the photocatalyst excited by the UV rays and are decomposed by the photocatalytic reaction.

    METHOD AND DEVICE FOR LIGHT IRRADIATION
    6.
    发明专利
    METHOD AND DEVICE FOR LIGHT IRRADIATION 失效

    公开(公告)号：JPH10274713A

    公开(公告)日：1998-10-13

    申请号：JP25834797

    申请日：1997-09-24

    Applicant: HOYA CORP

    Inventor： NISHII YOSHIKAZU

    IPC: G02B6/00

    Abstract: PROBLEM TO BE SOLVED: To accelerate photochemical reaction and to efficiently transmit heat energy by carrying high-refractive-index substrate having a higher refractive index than a photoconductor on the surface of the photoconductor and irradiating an object body with light which is guided by the photoconductor and leaks from the high-refractive-index substance. SOLUTION: On the surface of the photoconductor 1, the high-refractive-index substrate 2 which has the higher refractive index than the photoconductor 1 is carried and the object body is irradiated with the light which is guided by the photoconductor 1 and leaks from the high-refractive-index substance 2. The material of the photoconductor 1 is preferably glass which transmits ultraviolet light exciting a photocatalyst and does not react with the photocatalyst. As a more preferable glass material, low-alkali silicate glass, aluminosilicate glass, borosilicate glass, or nonalkali glass is used. Then a fiber shape, a honeycomb shape, a meshed shape, a cloth shape, a sheet shape, etc., are properly selected as the shape of the photoconductor 1 according to the purse of use.

    CRYSTALLIZED GLASS
    7.
    发明专利
    CRYSTALLIZED GLASS 失效

    公开(公告)号：JPH059039A

    公开(公告)日：1993-01-19

    申请号：JP15854491

    申请日：1991-06-28

    Applicant: HOYA CORP

    Inventor： NISHII YOSHIKAZU

    IPC: C03C3/097 ,  C03C3/105 ,  C03C10/04 ,  G01L9/00 ,  G01L9/04

    Abstract: PURPOSE:To provide a crystallized glass which can be connected to a silicon base by a cathode connection and the coefficient of thermal expansion is closely approximated to that of silicon base and the breaking strength is sufficiently high practically as for a first object to provide a pedestal for silicon base consisting of the crystallized glass for attaining the above-mentioned first object as a second object, and to provide a semiconductor pressure sensor provided with the silicon base for attaining the second object as a third object. CONSTITUTION:The crystallized glass for attaining the first object incorporates, in weight, 50-62% SiO2 22-30% Al2O3, 2-4.5% LiO2, 2-7% P2O5, 0.5-5% MgO, 1-6% Na2O, 1-5.5% TiO2 0-2% ZnO, 0-3% ZrO2 and incorporates a beta-quartz solid solution crystal as a deposition crystal. The pedestal for silicon base for attaining the second object consists of the above-mentioned crystal glass. The semiconductor pressure sensor for attaining the third object is provided with the pedestal for silicon base.

    FILTER UNIT FOR GAS REMOVAL
    8.
    发明专利
    FILTER UNIT FOR GAS REMOVAL 失效

    公开(公告)号：JP2001300258A

    公开(公告)日：2001-10-30

    申请号：JP2000118299

    申请日：2000-04-19

    Applicant: NITTA KK ,  HOYA CORP

    Inventor： TAKASO DAISUKE ,  HORIUCHI KENICHI ,  WATANABE ITARU ,  NISHII YOSHIKAZU

    IPC: F24F7/06 ,  B01D53/04 ,  B01D53/86

    Abstract: PROBLEM TO BE SOLVED: To provide a filter unit which can effectively adsorb and filtrate various gaseous contaminated substances and has a long life. SOLUTION: This filter unit A has an adsorbent filter 1 having adsorbents able to chemically or physically adsorb gaseous contaminated substances and a photocatalyst filter 2 wherein photocatalysts are carried on the surface of a light guide body so that gas passed through the filter 1 is sent to the filter 2.

    GLASS MATERIAL AND GLASS FIBER USING THE SAME
    9.
    发明专利
    GLASS MATERIAL AND GLASS FIBER USING THE SAME 失效

    公开(公告)号：JP2001064038A

    公开(公告)日：2001-03-13

    申请号：JP24293699

    申请日：1999-08-30

    Applicant: HOYA CORP

    Inventor： NISHII YOSHIKAZU ,  ARAI SOJI

    IPC: C03B5/225 ,  B01J35/02 ,  C03B5/43 ,  C03C3/064 ,  C03C3/091 ,  C03C4/00 ,  C03C13/00

    Abstract: PROBLEM TO BE SOLVED: To obtain a glass material suitable as a carrier of a photocatalyst or the like, hardly being colored and having high ultraviolet ray transmissivity and to produce a glass fiber. SOLUTION: This glass material contains 35-60 wt.% SiO2, 4-30 wt.% Al203, 4-25 wt.% B2O3, 4-40 wt.% CaO, 0-10 wt.% oxide of an alkali metal and below 50 ppm by weight iron content in terms of Fe. The glass fiber is obtained by spinning this glass material in a spinning furnace.

    LIGHT-LEAKING TYPE PHOTOCATALYST FILTER
    10.
    发明专利
    LIGHT-LEAKING TYPE PHOTOCATALYST FILTER 失效

    公开(公告)号：JP2001009292A

    公开(公告)日：2001-01-16

    申请号：JP18674099

    申请日：1999-06-30

    Applicant: HOYA CORP

    Inventor： NISHII YOSHIKAZU ,  HAMA JUNPEI ,  ARAI SOJI

    IPC: B01J35/02 ,  A61L9/16 ,  B01J19/12 ,  B01J35/00 ,  B01J35/06

    Abstract: PROBLEM TO BE SOLVED: To decrease the pressure drop in a filter even when enough effective filter length is maintained, to increase the use efficiency of photocatalyst fibers and to improve the filtration ability. SOLUTION: This filter is produced by bundling light-leaking type photocatalyst fibers 10 so as to form a filter structure having a great number of fine vacancies connecting in the longitudinal direction of the photocatalyst fibers. Light is introduced into the photocatalyst fibers which form the filter structure, while a fluid to be treated is introduced through the end face of the filter structure to pass through among the photocatalyst fibers in the longitudinal direction of the fibers.

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