会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Method and apparatus for fabricating coated optical fiber, and coated optical fiber
    • 用于制造涂覆光纤和涂覆光纤的方法和装置
    • US06519404B1
    • 2003-02-11
    • US09890166
    • 2001-07-27
    • Motohide YoshidaKatsuyuki TsuneishiMasao KoidaKatsuya Nagayama
    • Motohide YoshidaKatsuyuki TsuneishiMasao KoidaKatsuya Nagayama
    • G02B602
    • C03B37/032C03B37/027C03B37/02745C03B2203/06C03B2203/19C03B2203/36C03B2205/06C03C25/12C03C25/18
    • In a fabrication method of coated optical fiber 21, the coated optical fiber 21 is fabricated by heating to soften an end of an optical fiber preform 11 to draw a glass fiber 13 out therefrom, laying coatings 16, 19 on the glass fiber 13 to make the coated optical fiber 21, and guiding the coated optical fiber 21 via a swing guide roller 23 periodically swinging, to twist the coated optical fiber 21, thereby imparting twists about the axis to the glass fiber 13 inside the coated optical fiber 21. The fabrication method comprises a step of passing the coated optical fiber 21 having passed the swing guide roller 23, through a free zone (between 26 and 27) in which the coated optical fiber 21 is allowed to freely rotate about the axis, and thereby longitudinally canceling out elastic torsion stored in the coated optical fiber 21 because of longitudinally alternate inversion of twist directions thereof, wherein a zone length L (m) of the free zone is not less than Lo (m) defined as follows: Lo (m)=[a maximum drawing speed of the coated optical fiber (m/min)]/[the number of clockwise and counterclockwise swing motions per unit time of the swing guide roller (motions/min)].
    • 在涂覆光纤21的制造方法中,通过加热来制造涂覆光纤21,以软化光纤预制棒11的端部,从中拉出玻璃纤维13,将玻璃纤维13上涂覆涂层16,19 涂布光纤21,经由摆动导向辊23周期性摆动地引导被覆光纤21,使被覆光纤21扭曲,从而使被覆光纤21内的玻璃纤维13绕轴线扭曲。 方法包括使已经通过摆动引导辊23的涂覆光纤21通过允许涂覆光纤21绕轴线自由旋转的自由区(26和27之间)的步骤,从而纵向消除 由于其扭转方向的纵向交替反转,存储在涂覆光纤21中的弹性扭转,其中自由区的区段长度L(m)不小于如下定义的Lo(m) :Lo(m)= [涂覆光纤的最大拉伸速度(m / min)] / [摆动导辊的每单位时间的顺时针和逆时针摆动运动的数量(运动/分钟)]。
    • 8. 发明授权
    • Optical fiber producing method
    • 光纤生产方法
    • US06928840B1
    • 2005-08-16
    • US10089719
    • 2000-10-11
    • Katsuya NagayamaYuichi OhgaKazuya KuwaharaIchiro Tsuchiya
    • Katsuya NagayamaYuichi OhgaKazuya KuwaharaIchiro Tsuchiya
    • C03B37/027C03B37/029G02B6/00C03B37/025C03B37/03
    • C03B37/02718C03B37/029C03B2205/56C03B2205/82C03B2205/83C03B2205/90
    • A drawing apparatus 1 comprises a drawing furnace 11, a protecting tube 21, and a resin curing unit 31. A buffer chamber 41 is disposed between the drawing furnace 11 and the protecting tube 21, and has a length L1 in the drawing direction of the optical fiber 3. The buffer chamber 41 is constituted by a first buffer cell 42 and a second buffer cell 45. In the space within the buffer chamber 41, an He gas, which is an atmosphere gas within the drawing furnace 11, and the air, which is an atmosphere gas within the protecting tube 21, exist in a mixed state. The optical fiber 3 drawn upon heating in the drawing furnace 11 is fed to the protecting tube 21, and a predetermined part of the optical fiber 3 is annealed at a predetermined cooling rate. Thereafter, a coating die 62 coats the optical fiber 3 with a UV resin solution 63, and the resin curing unit 31 cures the UV resin 63, whereby a coated optical fiber 4 is obtained.
    • 拉制装置1包括拉丝炉11,保护管21和树脂固化单元31。 缓冲室41设置在拉丝炉11和保护管21之间,并且在光纤3的拉伸方向上具有长度L 1。 缓冲室41由第一缓冲单元42和第二缓冲单元45构成。 在缓冲室41内的空间内,作为吸入炉11内的气氛气体的He气体和作为保护管21内的气氛气体的空气以混合状态存在。 在拉丝炉11中加热拉制的光纤3被送入保护管21,光纤3的规定部分以规定的冷却速度进行退火。 此后,涂布模具62用UV树脂溶液63涂覆光纤3,树脂固化单元31固化UV树脂63,从而获得涂覆的光纤4。
    • 10. 发明授权
    • Manufacturing method of an optical fiber
    • 光纤的制造方法
    • US06502428B1
    • 2003-01-07
    • US09698280
    • 2000-10-30
    • Masashi OnishiKazuya KuwaharaKatsuya Nagayama
    • Masashi OnishiKazuya KuwaharaKatsuya Nagayama
    • C03B3707
    • G02B6/03666C03B37/0253C03B2203/18C03B2203/36C03B2205/40C03B2205/72G02B6/02271G02B6/0283G02B6/03627
    • A manufacturing method of an optical fiber, which enables to precisely manufacture the optical fiber having a desired chromatic dispersion, comprising: (1) preparing an optical fiber preform having a longitudinally uniform refractive index, (2) measuring the chromatic dispersion of a predetermined length of the optical fiber obtained at the beginning of the drawing, (3) according to the results of such measurement, estimating the chromatic dispersion characteristic of the optical fiber obtained by drawing the optical fiber preform, and commencing the drawing of the optical fiber preform. To achieve the target chromatic dispersion diameter of the optical fiber is determined according to the chromatic dispersion that is measured with respect to a predetermined length of an optical fiber obtained at the beginning of the drawing of an optical fiber preform. Then, the remainder of the optical fiber preform is drawn to produce an optical fiber having the desired chromatic dispersion.
    • 一种光纤制造方法,其能够精确地制造具有期望的色散的光纤,包括:(1)制备具有纵向均匀折射率的光纤预制棒,(2)测量预定长度的色散 ,(3)根据这种测量结果,估计通过拉制光纤预制棒而获得的光纤的色散特性,并开始拉伸光纤预制棒。 根据在光纤预制件的绘制开始时获得的光纤的预定长度测量的色散来确定实现光纤的目标色散直径。 然后,拉出光纤预制件的其余部分,以产生具有所需色散的光纤。