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    OPTICAL GLASS FOR FORMING MOLD LENS
    3.
    发明专利
    OPTICAL GLASS FOR FORMING MOLD LENS 审中-公开

    公开(公告)号：JP2002356348A

    公开(公告)日：2002-12-13

    申请号：JP2001310113

    申请日：2001-10-05

    Applicant: SUMITA OPTICAL GLASS

    Inventor： TSUCHIYA KOICHI ,  SAWANOBORI SHIGETO

    IPC: G02B1/00 ,  C03C3/064 ,  C03C3/115 ,  C03C3/118

    Abstract: PROBLEM TO BE SOLVED: To provide optical glass for forming a mold lens having lowered glass softening temperature without using environmentally harmful substances such as PbO and As2 O3 . SOLUTION: This optical glass comprises, in terms of mol% 5 to 60 SiO2 , 5 to 55 preferably 20 or above B2 O3 , 10 to 40 KF, 0 to 30 NaF, 0 to 15 LiF, also 0 to 10 TiO2 , 0 to 5 Nb2 O5 , 0 to 5 ZrO2 , 0 to 10 Al2 O3 , 0 to 5 Sb2 O3 , and further 0 to 15 AlF3 , 0 to 5 CaF2 , 0 to 10 SrF2 and 0 to 5 BaF2 .

    Tervalent europium-containing glass showing permanent hole burning
    5.
    发明专利
    Tervalent europium-containing glass showing permanent hole burning 失效
    含钛玻璃显示永久性孔洞

    公开(公告)号：JPH11271922A

    公开(公告)日：1999-10-08

    申请号：JP7749298

    申请日：1998-03-25

    Applicant: Sumita Optical Glass Inc ,  株式会社住田光学ガラス

    Inventor： NOGAMI MASAYUKI ,  SAWANOBORI SHIGETO ,  NISHI NAOKO

    IPC: C03C3/16 ,  C03C3/17 ,  C03C3/19 ,  G03C1/72

    Abstract: PROBLEM TO BE SOLVED: To obtain an oxide glass containing Eu
    3+ ion which can be easily produced by a melting method and which develops permanent spectral hole burning phenomenon, and to obtain the producing method of the glass.
    SOLUTION: This oxide glass essentially consists of phosphorus(P) and oxygen(O), contains tervalent europium and shows a permanent hole burning effect. In the producing method of the oxide glass, a source material compsn. for glass refining containing Eu
    2 O
    3 and phosphate is molten in air at 600 to 1000°C and vitrified. The permanent hole burning glass can be obtd. in a normal melting process without using a special means to melt in a reducing atmosphere. The obtd. glass can be used as an optical recording material having a large capacity.
    COPYRIGHT: (C)1999,JPO

    Abstract translation: 要解决的问题：为了得到含有Eu 3+离子的氧化物玻璃，该氧化物玻璃可以容易地通过熔融法制造并产生永久的光谱空穴燃烧现象，并获得玻璃的制造方法。 解决方案：该氧化物玻璃基本上由磷（P）和氧（O）组成，含有三价铕，具有永久性的燃烧效果。 在氧化物玻璃的制造方法中，源材料构成。 对于含有Eu2O3和磷酸盐的玻璃精炼在600〜1000℃的空气中熔融并玻璃化。 可以看到永久性的燃烧玻璃。 在正常的熔融过程中，不用特殊的方法在还原气氛中熔化。 有限公司 玻璃可以用作具有大容量的光学记录材料。

    GLASS FOR NEAR INFRARED ABSORPTION FILTER
    8.
    发明专利
    GLASS FOR NEAR INFRARED ABSORPTION FILTER 失效

    公开(公告)号：JPH0316933A

    公开(公告)日：1991-01-24

    申请号：JP15291389

    申请日：1989-06-15

    Applicant: SUMITA OPTICAL GLASS

    Inventor： HASHIMOTO HITOSHI ,  SAWANOBORI SHIGETO ,  NAGAHAMA SHINOBU

    IPC: G02B5/22 ,  C03C3/17 ,  C03C3/19 ,  C03C4/08 ,  F21V9/04

    Abstract: PURPOSE:To obtain a glass for near infrared absorption filter, exhibiting water- resistance and weather-resistance durable to long-term use and having high absorption coefficient in near infrared region and high transmission in visible range by using a CuO-doped phosphate glass as a matrix. CONSTITUTION:The objective glass for near infrared absorption filter useful for the sensitivity correction of a light receiving element of a color image pickup device is a CuO-containing phosphate glass having a composition of (A) 65.0-75.0wt.% of P2O5, (B) 11.0-14.0wt.% of Al2O3, (C) 0-4.0wt.% of B2O3, (D) 3.0-9.0wt.% of K2O, (E) 2.0-6.0wt.% of MgO, (F) 0-4.0wt.% of ZnO and (G) 1.5-4.0wt.% of CuO.

    ULTRAVIOLET-TRANSMISSIVE FLUOROPHOSPHATE GLASS
    9.
    发明专利
    ULTRAVIOLET-TRANSMISSIVE FLUOROPHOSPHATE GLASS 失效

    公开(公告)号：JPH02283635A

    公开(公告)日：1990-11-21

    申请号：JP32398688

    申请日：1988-12-22

    Applicant: SUMITA OPTICAL GLASS

    Inventor： KOMIYA MASAYUKI ,  OTSUKA MASAAKI ,  SAWANOBORI SHIGETO ,  NAGAHAMA SHINOBU

    IPC: C03C3/247 ,  C03C4/00

    Abstract: PURPOSE:To provide the title glass having high light transmissivity in short wavelength region, easy to produce, made up of P2O5, Al2O3, BaO, AlF3, MgF2, CaF2, SrF2, BaCl2, BaF2 and NaF at a specified molar ratio. CONSTITUTION:The objective glass made up of (A) 0.5-8mol% of P2O5, (B) 0.1-2mol% of Al2O3, (C) 0.5-7mol% of BaO, (D) 29-42mol% of AlF3, (E) 5-13mol% of MgF2, (F) 15-30.5mol% of CaF2, (G) 10-22mol% of SrF2, (H) 0.5-16.5mol% of BaCl2, (I) 0-11mol% of BaF2 and (J) 0-7.5mol% of NaF. To produce the present glass, the above raw materials are mixed at a specified ratio and melted at ca. 900-1100 deg.C followed by casting in a conventional way. The present glass has high light transmissivity over a short wavelength region of 200 to 300nm, thus being suitably used for various kinds of optical instruments, etc., to be used over said short wavelength region.

    INFRARED RAY-TRANSMITTING GLASS
    10.
    发明专利
    INFRARED RAY-TRANSMITTING GLASS 失效

    公开(公告)号：JPH01294550A

    公开(公告)日：1989-11-28

    申请号：JP12537588

    申请日：1988-05-23

    Applicant: SUMITA OPTICAL GLASS

    Inventor： SAWANOBORI SHIGETO ,  YAMAUCHI JUNYA ,  BABA NOBUYOSHI ,  NAGAHAMA SHINOBU

    IPC: C03C3/32 ,  C03C4/10

    Abstract: PURPOSE:To provide the stable title glass capable of transmitting light from visible area to wide infrared ray area and having excellent infrared ray transmission by constituting a glass of ZrF4, BaCl2, LiF and NaF having a specific molar ratio. CONSTITUTION:The aimed infrared ray transmitting glass has a composition consisting of 35-65mol% ZrF4, 5-30mol% BaCl2, 5-30mol% LiF, 5-30mol% NaF and 10-60mol% total amount of LiF and NaF. Ionization tendency can be lessen by furthermore adding at least one kind selected from AlF3, GaF3, YF3, LaF3 and GdF3 to the above-mentioned composition at an amount of 1-15%. Stability can be further improved by moreover adding at least one kind selected from CaF2, SrF2 and BaF2 thereto at an amount of 3-30%. The resultant infrared ray-transmitting glass is useful as a lens, etc., used in infrared ray area.

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