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    • 81. 发明授权
    • Dispersion-compensating fiber, dispersion compensator, and optical transmission line
    • 色散补偿光纤,色散补偿器和光传输线
    • US07164834B2
    • 2007-01-16
    • US11073725
    • 2005-03-08
    • Yoshinori Yamamoto
    • Yoshinori Yamamoto
    • G02B6/22
    • G02B6/02261G02B6/0281G02B6/03644
    • A dispersion-compensating fiber having a figure of merit of at least 200 ps/nm/dB and an absolute value of relative dispersion curvature of at most 10−4nm−2 both at a wavelength of 1550 nm, a dispersion compensator, and an optical transmission line are provided for large-capacity optical transmission. The dispersion-compensating fiber has a first core region with a refractive index of n1, a second core region surrounding the first core region with a n2 (n1>n2), a third core region surrounding the second core region with a n3 (n2 n4). With reference to n4, the first core region has a relative refractive-index difference of 2.0% to 3.3%, the second core region of −1.5% to −0.2%, and the third core region of 0.2% to 0.5%.
    • 一种色散补偿光纤,具有至少200ps / nm / dB的品质因数和相对色散曲率的绝对值至多为10-4nm。 为了大容量的光传输,都设有1550nm的波长,色散补偿器和光传输线。 色散补偿光纤具有折射率为n 1/2的第一纤芯区域,围绕第一纤芯区域的第二纤芯区域具有第二纤芯区域(n 1) 第三核心区域围绕具有第三核心区域的第三核心区域,其中第三核心区域具有第三核心区域, 3)和包围第三核心区域的50包层区域,其中第三核心区域具有第三核心区域(n 3 3 N 3 N 3)。 参考n 4,第一核心区域的相对折射率差为2.0%至3.3%,第二核心区域为-1.5%至-0.2%,第三核心区域为 0.2%至0.5%。
    • 82. 发明申请
    • Optical fibers
    • 光纤
    • US20060093293A1
    • 2006-05-04
    • US10519381
    • 2004-08-04
    • Eisuke SasaokaYoshinori Yamamoto
    • Eisuke SasaokaYoshinori Yamamoto
    • G02B6/02
    • G02B6/02C03B37/01248C03C3/06C03C13/04G02B6/02004G02B6/02223G02B6/02242G02B6/02266G02B6/02285G02B6/26
    • The present invention provides an optical fiber enabling signal transmission in a wider band, which is applicable to optical transmission not only in the 1.3 μm wavelength band but also in the 1.55 μm wavelength band, as a transmission medium of a WDM optical communication system capable of transmitting signal light of multiple channels. The optical fiber is comprised of silica glass and has a core region along a predetermined axis and a cladding region provided on the outer periphery of the core region. The optical fiber comprising such a structure has, as the following typical optical characteristics, a cable cutoff wavelength of 1260 nm or less, a transmission loss of 0.32 dB/km or less at the wavelength of 1310 nm, and an OH-related loss increase of 0.3 dB/km or less at the wavelength of 1380 nm.
    • 本发明提供一种能够在更宽的频带中进行信号传输的光纤,其可以应用于不仅在1.3μm波长带中,而且在1.55μm波长带中的光传输,作为WDM光通信系统的传输介质,能够 传输多个信道的信号灯。 光纤由石英玻璃构成,具有预定轴的芯部区域和设置在芯部区域的外周的包层区域。 包含这种结构的光纤具有以下典型的光学特性:电缆截止波长为1260nm或更小,波长1310nm处的传输损耗为0.32dB / km或更小,OH相关损耗增加 在1380nm的波长下为0.3dB / km以下。
    • 84. 发明授权
    • Oxide phosphorescent glass capable of exhibiting a long lasting
after-glow and photostimulated luminescence
    • 氧化磷光玻璃能够表现出持久的余辉和光刺激发光
    • US6123872A
    • 2000-09-26
    • US210904
    • 1998-12-16
    • Masaaki YamazakiYoshinori YamamotoNaruhito SawanoboriShinobu Nagahama
    • Masaaki YamazakiYoshinori YamamotoNaruhito SawanoboriShinobu Nagahama
    • G21K4/00C03C3/066C03C3/068C03C3/093C03C3/095C03C4/04C03C4/12C09K11/08C09K11/63C09K11/79G01T1/00C09K11/00
    • C03C4/04C03C3/066C03C3/068C03C4/12C09K11/757C09K11/7755C09K11/778
    • The present invention provides an oxide glass capable of exhibiting a long lasting afterglow and photostimulated phosphorescence, whereby energy can be accumulated by radiation excitation, for example, by .gamma.-rays, X-rays, UV-rays, etc., light emission can be continued for a long time even after stopping the excitation. Furthermore, the long lasting afterglow and photostimulated luminescence oxide glass can be used not only as a phosphorescent material for night illumination or night signal, but also as a material for confirming an infrared laser or controlling an optical axis because of exhibiting photostimulated luminescence by irradiation of infrared rays or visible rays. In addition, this glass is useful for recording or reproducing of .gamma.-rays, X-rays or UV-rays images. This glass material is represented, in term of atoms for making up the glass, by the following chemical composition (mol %):______________________________________ SiO.sub.2 1 to 55% B.sub.2 O.sub.3 1 to 50% (SiO.sub.2 + B.sub.2 O.sub.3 = 20 to 60%) ZnO 30 to 75% Tb.sub.2 O.sub.3 0 to 7% MnO 0 to 2% (Tb.sub.2 O.sub.3 + MnO = 0.01 to 7%) R.sub.2 O 0 to 25% (R: at least one atom selected from Li, Na, K and Cs) R'O 0 to 25% (R': at least one atom selected from Mg, Ca, Sr and Ba) Al.sub.2 O.sub.3 0 to 15% Ga.sub.2 O.sub.3 0 to 15% GeO.sub.2 0 to 20% ZrO.sub.2 0 to 5% Ln.sub.2 O.sub.3 0 to 8% (Ln: at least one atom selected from Y, La, Gd, Yb, Lu, Sm, Dy, Tm and Pr) and Sb.sub.2 O.sub.3 0 to 0.5%. ______________________________________
    • 本发明提供能够显示持久的余辉和光刺激的磷光的氧化物玻璃,由此例如通过γ射线,X射线,紫外线等可以通过辐射激发而积聚能量,可以发光 持续很长时间,即使停止激发。 此外,持久的余辉和光刺激的发光氧化物玻璃不仅可以用作夜间照明或夜间信号的磷光材料,而且可以用作确认红外激光或控制光轴的材料,因为通过照射显示光刺激的发光 红外线或可见光。 此外,这种玻璃可用于记录或再现γ射线,X射线或UV射线图像。 根据以下化学成分(摩尔%)表示玻璃材料:SiO 2 1〜55%-B 2 O 3〜50%(SiO 2 + B 2 O 3 = 20〜60%) - ZnO 30〜75%-Tb 2 O 3〜7%-MnO 0〜2%(Tb 2 O 3 + MnO = 0.01〜7%)-R 2 O 0〜25%(R:至少一种选自Li,Na,K和Cs的原子) - R'O 0〜25%(R':选自Mg,Ca,Sr和Ba中的至少一个原子)-Al 2 O 3 0〜15%-Ga 2 O 0〜15%-GeO 0〜20%-ZrO 2 0〜5 %Ln2O3 0〜8%(Ln:选自Y,La,Gd,-Yb,Lu,Sm,Dy,Tm和Pr中的至少一个原子)和Sb 2 O 3 0〜0.5%。 -
    • 88. 发明授权
    • Magnetic recording medium
    • 磁记录介质
    • US4830923A
    • 1989-05-16
    • US823364
    • 1986-01-28
    • Kenji SumiyaYoshinori YamamotoShigeo AoyamaYoji Takeuchi
    • Kenji SumiyaYoshinori YamamotoShigeo AoyamaYoji Takeuchi
    • C09D5/23G11B5/702
    • G11B5/7022Y10S428/90Y10T428/31609
    • A magnetic recording medium comprising a substrate and a magnetic layer coated on the substrate which comprises a magnetic powder and a binder resin, wherein said binder resin comprises a modified polymer selected from the group consisting of a polymer having a backbone chain comprising a vinyl chloride/vinyl acetate/vinyl alcohol terpolymer and a polymer having a backbone chain comprising polyurethane to both of which a phosphoric acid group of the formula: ##STR1## wherein A is a hydrogen atom, an alkali metal atom or a hydrocarbon group, and n is 0 or 1 is bonded, the magnetic layer having improved surface smoothness, improved durability and excellent electromagnetic conversion characteristics particularly in the short wavelength range.
    • 一种磁记录介质,包括涂覆在所述基材上的基材和磁性层,所述磁性层包含磁性粉末和粘合剂树脂,其中所述粘合剂树脂包含改性聚合物,所述改性聚合物选自具有主链的聚合物,所述主链包含氯乙烯/ 乙酸乙烯酯/乙烯醇三元共聚物和具有包含聚氨酯的主链的聚合物,二者均具有下式的磷酸基团:其中A是氢原子,碱金属原子或烃基,和 n是0或1键合,磁性层具有改善的表面光滑度,改进的耐久性和优异的电磁转换特性,特别是在短波长范围内。
    • 90. 发明授权
    • Tape cassette with concave engagement portion and player with hook
engageable therewith
    • 具有凹形接合部分的带盒和具有可与其啮合的钩子
    • US4694360A
    • 1987-09-15
    • US719432
    • 1985-04-03
    • Masao OhyamaYoshinori YamamotoKenichi HorikawaKenji Kawakami
    • Masao OhyamaYoshinori YamamotoKenichi HorikawaKenji Kawakami
    • G11B15/675G11B15/665G11B23/087G11B15/60
    • G11B15/675G11B23/087
    • A tape cassette comprises a cassette housing having an upper section, a lower section, a pair of reel hubs rotatably accommodated therein for winding a magnetic tape therearound, and a front opening through which the tape is engageable with a recording and/or reproducing head. The lower section is formed with a pair of openings for respectively receiving reel shafts for rotating the hubs and thereby driving the tape, and the upper section is formed with a recess. A tape player with which the cassette cooperates is provided with a holder for the cassette, with a loading hook engageable in the recess in the upper cassette section, and with an arrangement of cams and levers for moving the loading hook between an ejection position wherein the tape cassette can be manually inserted partway into or removed from the cassette holder and a loaded position wherein an inserted cassette is fully drawn into the holder, and for moving the holder between an upper position wherein a cassette can be loaded into or ejected from the holder and a lower position wherein a cassette loaded into the holder engages a tape drive.
    • 磁带盒包括具有上部分,下部分,可旋转地容纳在其中以缠绕其周围的磁带的一对卷轴轮毂的盒壳体,以及带可与记录和/或再现头部接合的前开口。 下部形成有一对开口,用于分别接收用于使轮毂旋转并由此驱动带的卷轴,并且上部形成有凹部。 带盒配合的带式播放器设置有用于盒的保持器,其具有可接合在上盒部分中的凹部中的装载钩,并且具有凸轮和杠杆的布置,用于将装载钩移动在喷射位置之间,其中, 盒式磁带可以手动插入到盒式磁带保持器中或从磁带托架中取出,以及一个装载位置,其中插入的磁带盒被完全拉入保持架,并且用于使保持架在上部位置之间移动,其中磁带盒可被装入或从保持架中弹出 以及下部位置,其中装载到保持器中的盒接合磁带驱动器。