SEMICONDUCTOR FINE CRYSTAL-CONTAINING MULTI-COMPONENT GLASS

    公开(公告)号:JPH03187952A

    公开(公告)日:1991-08-15

    申请号:JP32767689

    申请日:1989-12-18

    Abstract: PURPOSE:To obtain semiconductor fine crystal-containing multi-component glass exhibiting a large quantum size effect comprising glass matrix formed with sol-gel method containing SiO2 as principal component and specific secondary component and semiconductor fine crystal of a compound containing chalcogen element dispersed and deposited in the matrix in an amount of specific ratio. CONSTITUTION:Said semiconductor fine crystal-containing multi-component glass is composed of glass matrix formed with sol-gel method containing SiO2 as a principal component and a species selected from the group of at least ZrO2, TiO2, Al2O3, Na2O, K2O, Li2O, MgO, ZnO, CaO, PbO, BaO, B2O3, P2O5, SrO and La2O3 as a secondary component and semiconductor fine crystal of a compound containing chalcogen element dispersed and deposited in the glass matrix in a ratio of >=0.1wt.%.

    SEMICONDUCTOR-CONTAINING GLASS
    3.
    发明专利

    公开(公告)号:JPH03187951A

    公开(公告)日:1991-08-15

    申请号:JP32626689

    申请日:1989-12-15

    Abstract: PURPOSE:To obtain semiconductor-containing glass exhibiting a large quantum size effect containing fine crystal of specific semiconductor. CONSTITUTION:The aimed semiconductor-containing glass contains at least a specifies of semiconductor fine crystal selected from the group consisting of PbSe, PbTe, ZnTe, CuBr and CuI. In this case, the glass matrix may be silica glass or multi-component glass. Content of the semiconductor fine crystal is not specifically restricted. Besides, also granular diameter of the semiconductor fine crystal is not specifically restricted, while

    PRODUCTION OF SEMICONDUCTOR-CONTAINING GLASS AND SEMICONDUCTOR-CONTAINING GLASS OBTAINED BY SAME METHOD

    公开(公告)号:JPH03187950A

    公开(公告)日:1991-08-15

    申请号:JP32626589

    申请日:1989-12-15

    Abstract: PURPOSE:To obtain semiconductor-containing glass having excellent non-linear optical properties by exposing glass-forming gelled solid containing metal element as raw material of compound semiconductor to a gas containing non-metallic element generating compound semiconductor in reacting with said metal element with vitrifying at a specific temperature. CONSTITUTION:The aimed semiconductor glass is produced by first process; obtaining gelled solid containing metal element as raw material of compound semiconductor vitrifying by heat treatment and second process; exposing said gelled solid to a gas containing non-metallic element generating compound semiconductor in reacting with said metal element after vitrified by heating at 400-1150 deg.C, or with vitrifying by heating at 400-1150 deg.C. Size of contained fine crystal of compound semiconductor is able to be controlled by suitably selecting treating condition for vitrifying of gelled solid and/or treating condition in exposing to gas containing non-metallic element in the second process.

    MANUFACTURING OF SAMARIUM ION-CONTAINING GLASS

    公开(公告)号:JPH07330369A

    公开(公告)日:1995-12-19

    申请号:JP13219994

    申请日:1994-06-14

    Abstract: PURPOSE:To produce a Sm -containing silicate glass excellent in weather resistance (chemical durability) and capable of exhibiting strong PHB phenomenon with excellent reproducibility through the improvement of f-f transition efficiency. CONSTITUTION:An alumino-silicate glass precursor containing Sm ion is vitrified by subjecting it to a heat treatment in a reducing atmosphere. In this process, the Sm ion is reduced to Sm ion and a Sm ion-containing alumino- silicate glass is obtained.

    GAS TREATMENT APPARATUS AND GAS TREATMENT FILTER

    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

    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.

    FILTER DEVICE
    9.
    发明专利

    公开(公告)号:JPH10118415A

    公开(公告)日:1998-05-12

    申请号:JP28382196

    申请日:1996-10-25

    Applicant: HOYA CORP

    Abstract: PROBLEM TO BE SOLVED: To obtain a efficient filtration action and to effectively fulfill filter purification function utilizing a photocatalytic reaction by forming a filter device of filter material so that one end part in the longitudinal direction is opened and other end part is closed and also size of an opening is formed gradually smaller as nearer approaching the other end part. SOLUTION: An opening part 20 used for the inflow port of material to be filtrated is formed of many long fibrous bodies 11 in one end of the filter device. A bundled convergent part 21 is formed in other end thereof. A part surrounding space part 22 formed in a range from the opening part 20 to the convergent part 21 constitutes a filtration part 23 being a part performing filtration action. Filtration area of the filtration part 23 is made large by this constitution. Further, when space part being the flow path of fluid to be filtrated is formed into a shape which is gradually narrowed as nearer approaching the inner part (tip part), pressure decrease of introduced fluid is supplemented in some degree and pressure difference between respective positions on the inner peripheral face of the filtration part 23 is made small. Therefore, such action effect is obtained that deviation of collection is relaxed.

    THERMOCHROMIC GLASS AND ITS PRODUCTION

    公开(公告)号:JPH04285688A

    公开(公告)日:1992-10-09

    申请号:JP5133491

    申请日:1991-03-15

    Applicant: HOYA CORP

    Inventor: OGAWA SHINICHI

    Abstract: PURPOSE:To obtain the title glass reversibly showing a color corresponding to temperature and change of color in a high temperature range, having excellent heat resistance and weather resistance by adding fine particles comprising a compound (mixed crystal of compound) of CdS, ZnS, etc., to a parent material of glass. CONSTITUTION:Fine particles (mixture of fine particles) comprising one compound selected from CdS, CdSe, ZnS and ZnSe or mixed crystal of plural compounds are added to a parent material of glass consisting essentially of SiO2, etc., to give the objective glass. The objective glass is obtained by forming porous glass comprising dispersed and precipitated one or more colloids selected from CdS, CdSe, ZnS and ZnSe, heating the porous glass in an inert gas atmosphere or in a reducing glass atmosphere at 500-1,300 deg.C to remove pores.

Patent Agency Ranking