专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH08233583A OPTICAL FIBER COIL 失效
公开(公告)号：JPH08233583A
公开(公告)日：1996-09-13
申请号：JP32143195
申请日：1995-12-11
申请人： HITACHI LTD
发明人： MATSUMURA HIROYOSHI , KATSUYAMA TOSHIO , SUGANUMA YASUO
IPC分类号： G01C19/72 , G02B6/00 , G02B6/02 , G02B6/024 , G02B6/10 , G02B6/17
摘要： PURPOSE: To stabilize the operation of an optical gyroscope while no energy conversion between propagation modes is generated by making the sectional shape of clad or jacket of an optical fiber to be elliptic and determining the refractive index of optical main axis in a core as a specific condition. CONSTITUTION: The sectional shape of clad or jacket of an optical fiber is made elliptic and, when the refractive indexes of main optical axes in a core are set to nx and ny , the radius of an optical fiber coil R0 , and the wavelength of an incident light λ, respectively, the relationship of |nx -ny |>λ/R0 is satisfied. Then, a light from a laser 1 is a linear polarized light wave in a y direction, and its half is directed to one end part 7 of the optical coil through a half mirror 2 and lens 4. In such a case, it is combined in a manner to become coincident with the linear polarized wave face from the laser and the optical main axis y. The other half reaches the other input end 8 through a half mirror 2 and reflection mirror 3, and this case is similar to the combination on the input end 7 and the half is combined with the same main optical axis so as to become the main optical axis y.

2. 发明专利

JPH0644088B2 失效
公开(公告)号：JPH0644088B2
公开(公告)日：1994-06-08
申请号：JP10811585
申请日：1985-05-22
申请人： HITACHI LTD
发明人： KATSUYAMA TOSHIO , MATSUMURA HIROYOSHI , SUGANUMA YASUO
IPC分类号： C03C13/04 , G02B6/02 , G02B6/024 , G02B6/10 , G02B6/16

3. 发明专利

JPH0682259A OPTICAL FIBER COIL 失效
公开(公告)号：JPH0682259A
公开(公告)日：1994-03-22
申请号：JP6160093
申请日：1993-03-22
申请人： HITACHI LTD
发明人： MATSUMURA HIROYOSHI , KATSUYAMA TOSHIO , SUGANUMA YASUO
IPC分类号： G02B6/00 , G01C19/72 , G02B6/02
摘要： PURPOSE:To obtain an optical fiber coil for practical use of a device for measuring an azimuth and a position. CONSTITUTION:When the refractive indexes at each optical main axis of the core of an optical fiber 6 are set to nx and ny, the radius of the optical fiber coil is set to R0, and the wavelength of light which is made incident on the optical fiber 6 is set to lambda in the optical fiber coil which is formed by winding the optical fiber 6 with two optical main axes, ¦nx-ny¦ >lambda/R0 should be satisfied, thus obtaining the optical fiber coil which does not generate energy conversion between propagation modes.

4. 发明专利

JPH0322595B2 失效
公开(公告)号：JPH0322595B2
公开(公告)日：1991-03-27
申请号：JP1701884
申请日：1984-02-03
申请人： HITACHI LTD
发明人： MATSUMURA HIROYOSHI , KATSUYAMA TOSHIO , SUGANUMA YASUO
IPC分类号： G01R33/032

5. 发明专利

JPH0239459B2 失效
公开(公告)号：JPH0239459B2
公开(公告)日：1990-09-05
申请号：JP7657081
申请日：1981-05-22
申请人： HITACHI LTD
发明人： KATSUYAMA TOSHIO , MATSUMURA HIROYOSHI , SUGANUMA YASUO
IPC分类号： C03B20/00 , C03B37/018 , G02B6/00

6. 发明专利

JPH021088B2 失效
公开(公告)号：JPH021088B2
公开(公告)日：1990-01-10
申请号：JP7079180
申请日：1980-05-29
申请人： HITACHI LTD
发明人： SUSA KENZO , MATSUYAMA IWAO , SATO MAKOTO , SUGANUMA YASUO
IPC分类号： C03B37/018 , B01J21/00 , C01B33/152 , C01B33/157 , C03B8/02 , C03B19/12 , C03B37/016 , G02B6/00

7. 发明专利

JPS6350291B2 失效
公开(公告)号：JPS6350291B2
公开(公告)日：1988-10-07
申请号：JP2814980
申请日：1980-03-07
申请人： HITACHI LTD
发明人： MATSUMURA HIROYOSHI , KATSUYAMA TOSHIO , SUGANUMA YASUO
IPC分类号： C03B37/018 , C03B37/00 , C03B37/012 , G02B6/00 , G02B6/024

8. 发明专利

JPS6137213B2 失效
公开(公告)号：JPS6137213B2
公开(公告)日：1986-08-22
申请号：JP12510378
申请日：1978-10-13
申请人： HITACHI LTD
发明人： IMOTO KATSUYUKI , SUGANUMA YASUO
IPC分类号： C03C13/04 , C03B8/02 , C03B37/014 , C03B37/016 , G02B6/00

9. 发明专利

JPS60237406A OPTICAL FIBER 失效
公开(公告)号：JPS60237406A
公开(公告)日：1985-11-26
申请号：JP8235385
申请日：1985-04-19
申请人： HITACHI LTD
发明人： KATSUYAMA TOSHIO , MATSUMURA HIROYOSHI , ISHIDA KOUJI , SUGANUMA YASUO
IPC分类号： G03B37/00 , G02B6/024 , G02B6/10
摘要： PURPOSE:To reduce the coupling length of an optical fiber and to realize the optical fiber having polarization maintainability by selecting a standardized frequency in an optimum way when the quantity of double refraction is constant. CONSTITUTION:The figure is obtd. when the relation between the standardized frequency and the coupling length is measured while the specified quantity of the double reflection is maintained with the optical fiber formed concentrically with a circular core 1, an elliptical clad 2 and a jacket 3 into a concentrical circular shape. The figure shows the coupling length L measured by changing the core diameter or the refractive index of the core. The coupling length is short between 1.7-3.9 standardized frequencies and increases sharply outside said range. The optical fiber having high polarization maintainability is realized by selecting the standardized frequency between 1.7-3.9.

10. 发明专利

JPS59169954A Material for infrared optical fiber 失效
标题翻译：红外光纤材料
公开(公告)号：JPS59169954A
公开(公告)日：1984-09-26
申请号：JP4423383
申请日：1983-03-18
申请人： Hitachi Ltd
发明人： KATSUYAMA TOSHIO , MATSUMURA HIROYOSHI , SUGANUMA YASUO
IPC分类号： C03C3/32 , C03C4/10 , C03C13/04 , G02B6/00
CPC分类号： C03C13/043 , C03C3/321
摘要： PURPOSE:A constitutional material for optical fiber transmitting infrared rays, obtained by preparing chalcogenide glass containing Ge, Te, and Al or Ge, Te, and Sb in a specific ratio. CONSTITUTION:In triangular diagrams showing content ratios of Ge, Te, and Al and Ge, Te, and Sb, glass materials of three components blended to exhibit compositions shown by the oblique lines are sealed in quartz tubes in vacuum, and melted at about 1,000 deg.C for about 10min - several hours, the quartz tubes sealed in vacuum are thrown into liquid nitrogen and cooled. Consequently, chalcogenide glass of material for optical fiber transmitting infrared rays is prepared.
摘要翻译：目的：通过以特定比例制备含有Ge，Te，Al或Ge，Te和Sb的硫族化物玻璃获得的用于发送红外线的光纤的结构材料。构成：在显示Ge，Te和Al以及Ge，Te和Sb的含量比的三角图中，将以斜线表示的组成的三种组分的玻璃材料真空密封在石英管中，并在约1,000 在约10分钟至数小时内，密封在真空中的石英管被投入液氮并冷却。因此，制备用于发射红外线的光纤的材料的硫族化物玻璃。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式