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1. 发明专利

JPH0532727B2 失效
公开(公告)号：JPH0532727B2
公开(公告)日：1993-05-17
申请号：JP23271686
申请日：1986-09-29
申请人： FUJITSU LTD
发明人： NODA HIDEKI , KUNIKANE TATSURO , NAGANUMA NORIHISA , KUSAKA SATOSHI
IPC分类号： G02B6/30

2. 发明专利

JPH04372906A OPTICAL ATTENUATION FILM 失效
公开(公告)号：JPH04372906A
公开(公告)日：1992-12-25
申请号：JP15143691
申请日：1991-06-24
申请人： FUJITSU LTD
发明人： KUSAKA SATOSHI , NODA HIDEKI , OTANI TOSHIHIRO
IPC分类号： G02B5/28 , G02B6/00
摘要： PURPOSE:To obtain an optical attenuation film which is free from any damage on itself even in the case of high power and whose band width in use is broad by using, as laminating material, a Si film having a high refractive index and no absorptive power in a wavelength band in use so as to provide constitution of Si/SiO2. CONSTITUTION:In the case of an optical attenuation film made up by alternately laminating 2 kinds of material in a plurality of layer on a glass substrate, while using Si for every odd layer and SiO2 for every even layer in order from the side of the substrate resulting in 4 layers in total and when 1/4 of the center wave-length of a ray in use is set to 1.0, the thicknesses of the film are set in such a manner as the first layer = 1.0, the second layer = 1.0, the third layer = 1.0 and the fourth layer = 1.0 and the deviation of film thickness of each layer is regulated within the range of + or -5%. It is thereby possible to increase the band width in use from conventional approx. 250nm, to approx. 620nm, and also get an attenuation quantity of 7.5dB. Moreover, it is possible to achieve a quantity of attenuation of 17.5dB by laminating 8 layers with film thicknesses such as the first layer = 0.3, the second layer = 1.3, the third layer = 0.8, the fourth layer = 1.2 and the fifth layer to eighth layer = 1.0 and restricting the deviation of film thickness of each of the layers within the range of + or -5%.

3. 发明专利

JPH02228607A POLARIZER 失效
公开(公告)号：JPH02228607A
公开(公告)日：1990-09-11
申请号：JP4646689
申请日：1989-03-01
申请人： FUJITSU LTD
发明人： KUSAKA SATOSHI , NODA HIDEKI
IPC分类号： G02B5/30
摘要： PURPOSE:To realize a polarizer having a wide band and a simple constitution by alternately laminating 15 Si layers and SiO2 layers and selecting 4lambda as the wavelength of light and setting the thickness of 1st and 15th layers, that of the 5th layer, that of the 7th layer, that of the 8th layer, that of the 9th layer, and that of the other layers to 0.7lambda, 0.9lambda, 1.05lambda, 1.7lambda, 0.89lambda, and 1.0lambda respectively. CONSTITUTION:With respect to the polarizer where an Si layer 2 and an SiO2 layer 3 are alternately laminated on a transparent substrate 1, the number of laminated layers is 15, and the first layer directly brought into contact with the transparent substrate 1 is the SiO2 layer 2. When the wavelength of light is 4lambda, the thickness of 1st and 15th layers, that of the 5th layer, that of the 7th layer, that of the 8th layer, that of the 9th layer, and that of the other layers are set to 0.7lambda, 0.9lambda, 1.05lambda, 1.7lambda, 0.89lambda, and 1.0lambda respectively. Since Si is used instead of TiO2 in the layer-built structure of conventional polarized light separating films, the transmission loss of the p-polarized wave is reduced and an extinction ratio is easily raised. Thus, the polarizer is obtained which has a wide band (the wavelength range of light where the extinction ratio higher than a prescribed value is obtained) and a simple constitution.

4. 发明专利

JPH02188701A OPTICAL BRANCHING AND COUPLING DEVICE 失效
公开(公告)号：JPH02188701A
公开(公告)日：1990-07-24
申请号：JP769289
申请日：1989-01-18
申请人： FUJITSU LTD
发明人： KUSAKA SATOSHI , NODA HIDEKI
IPC分类号： G02B5/04 , G02B27/28
摘要： PURPOSE:To obtain the optical branching and coupling device whose branching ratio has small polarization dependency in a 1.55mum band by laminating high- refractive-index layers made of Si and low-refractive-index layers of SiO2 alter nately and forming a branching and coupling film. CONSTITUTION:The branching and coupling film 6 is interposed between slanting surfaces of right-angled prismatic prisms 2 and 4 made of transparent glass and this branching and coupling film 6 is formed by laminating odd-numbered high-refractive-index layers of Si with a refractive index of 3.52 and even- numbered low-refractive-index layers of SiO2 with a refractive index of 1.45 alternately. Further, the angle of incidence on the branching and coupling film 6 is set to 45 deg.. In this case, the transmissivity or branching ratio has polarization dependency, which is small in a band of 1.5-1.6mum, when the wavelength is, for example, 1.55mum, the reflection loss of a P wave is 13.0 dB, the reflection loss of an S wave is 13.5 dB, and their difference is 0.5 dB. Consequently, the optical branching and coupling device whose branching ratio has small polarization dependency in a band of 1.55mum is obtained.

5. 发明专利

JPH0273308A POLARIZED LIGHT SEPARATING FILM 失效
公开(公告)号：JPH0273308A
公开(公告)日：1990-03-13
申请号：JP22690388
申请日：1988-09-09
申请人： FUJITSU LTD
发明人： KUSAKA SATOSHI , NODA HIDEKI
IPC分类号： G02B5/30
摘要： PURPOSE:To make the subject film a wide band region, a small-sized and a low cost by laminating alternately TiO2 and SiO2 layers on a GGG substrate in 15-19 layers, and by specifying prescribed layers to a prescribed thickness respectively. CONSTITUTION:The TiO2 and SiO2 layers are laminated alternatively on the GGG substrate in 15-19 layers, and odd-numbered layers are composed of SiO2 and even-numbered layers are composed of TiO2. The polarized light separating film is constituted of 15-19 layers, and the thickness of a third, fifth seventh, eight, ninth, eleventh and twelfth layers is specified to 1.2+ or -5%, 1.1+ or -5%, 0.8+ or -5%, 1.4+ or -5% and 1.1+ or -5% respectively. The thickness of the layers excepting the layers mentioned above is specified to 1.0+ or -5%. Thus, the ripple of P-wave is minimized, and the subject film is made a high quenching ratio, and the wide band region and the small sized.

6. 发明专利

JPH01145607A OPTICAL DEVICE 失效
公开(公告)号：JPH01145607A
公开(公告)日：1989-06-07
申请号：JP30530387
申请日：1987-12-02
申请人： FUJITSU LTD
发明人： NODA HIDEKI , NAGANUMA NORIHISA , ISONO HIDEKI
IPC分类号： G02B6/28 , G02B6/12 , G02B6/122
摘要： PURPOSE:To reduce the insertion loss and to reduce the size of the optical device by specifying the relative positions of respective optical elements by using a laminate substrate formed by laminating a desired number of plates. CONSTITUTION:The laminate substrate 21 is formed by laminating and uniting a specific number of thin laminate substrate elements 21a so that the thickness is nearly equal to the external diameter of a lens 30. When grooves are formed in the substrate by a dry etching method, the size accuracy is higher and higher as the plate thickness of the substrate is thinner and thinner. Therefore, when the lens 30 is pressed and fitted in a lens fitting groove 26 and a ferrule 35 is pressed and fitted in a ferrule fitting groove 22, the optical axis of an optical fiber 5 and the optical axis of the lens 30 are aligned with each other and the end surface of the ferrule 35, i.e. the incidence/projection end surface of the optical fiber 5 meets the focus position of the lens 30. Namely, the optical coupling loss between the optical fiber 5 and lens 30 is made extremely small. Consequently, the optical device is obtained whose size reduction is prompted and which has small optical coupling loss.

7. 发明专利

JPS6340289B2 失效
公开(公告)号：JPS6340289B2
公开(公告)日：1988-08-10
申请号：JP22444283
申请日：1983-11-30
申请人： FUJITSU LTD
发明人： KUSAKA SATOSHI , NODA HIDEKI , FURUTA YOSUKE , KYONO MINORU , NAKAJIMA HIROKI
IPC分类号： G02B5/30

8. 发明专利

JPS6360401A MANUFACTURE OF OPTICAL FILM PARTS 失效
公开(公告)号：JPS6360401A
公开(公告)日：1988-03-16
申请号：JP20536686
申请日：1986-09-01
申请人： FUJITSU LTD
发明人： KUSAKA SATOSHI , NODA HIDEKI
IPC分类号： G02B5/28 , G02B5/30
摘要： PURPOSE:To obviate the possibility that an optical film is damaged, to improve the yield, and to obtain optical film parts of low cost by forming a V-groove before providing an optical film on an optical substrate, forming the optical film, and thereafter, separating and cutting it to each separate optical film parts by a groove bottom edge line part. CONSTITUTION:A matrix-shaped V-groove 15 is formed symmetrically on the surface and the reverse side of an optical substrate 1, and a plane shape of optical film parts 10 to be manufactured is divided into equal square forms. This V-groove 15 is provided by placing the optical substrate 1 on a table which can be driven in parallel in the X axis and Y axis directions, respectively, and feed a rotating grinding wheel 16 for V-groove deeply into a desired depth from the upper part. After the V-groove 15 has been formed, a desired optical film (filter film polarization separating film, coupler film) 2 is formed by vapor-depositing alternately dielectric films whose refractive indexes are different, by scores of layers, onto the whole surface of the surface of the optical substrate 1 except a chamfered edge line 5 and the groove side wall of the V-groove 15. Thereafter, the optical substrate 1 is cut and separated by the respective groove bottom edge line 15a parts, part of the inner wall surface of the V-groove 15 is left as it is in the edge line part made by a cutting plane 4 of a substrate element piece 14A, and the surface and the reverse side, and the optical film parts 10 having the chamfered edge line 5 is obtained.

9. 发明专利

JPS61285401A PRODUCTION OF OPTICAL FILTER 失效
公开(公告)号：JPS61285401A
公开(公告)日：1986-12-16
申请号：JP12623985
申请日：1985-06-12
申请人： FUJITSU LTD
发明人： ISONO HIDEKI , NODA HIDEKI
IPC分类号： C23C14/24 , G02B5/20
摘要： PURPOSE:To simultaneously manufacture optical filters having various wavelength characteristics by disposing substrates for the optical fibers respectively having different vapor deposition angles relative to a vapor deposition source into a vapor deposition chamber of a vapor deposition device and simultaneously depositing dielectric films by evaporation from the vapor deposition source to the respective substrates. CONSTITUTION:The vapor deposition material 5 from the vapor deposition source 1 is deposited by evaporation onto the substrate 2a in the perpendicular direction thereof and is deposited by evaporation onto the substrates 2b, 2c in the direction of the angles of inclination of the substrates 2b, 2c. Therefore the thicknesses of the dielectric films formed on the substrates 2b, 2c decrease respectively to meet the angles of inclination of the substrates 2b, 2c as compared with the thickness of the dielectric film formed on the substrate 2a. The dielectric films are therefore different in the respective thicknesses even if the same vapor deposition material 5 is simultaneously deposited by evaporation. The optical filters having different wavelength characteristics are simultaneously formed.

10. 发明专利

JPS6167810A Fixing structure of optical parts 失效
标题翻译：光学零件固定结构
公开(公告)号：JPS6167810A
公开(公告)日：1986-04-08
申请号：JP19093084
申请日：1984-09-11
申请人： Fujitsu Ltd
发明人： ASANUMA KAZUYUKI , OKAMOTO AKIRA , NODA HIDEKI , FURUTA YOSUKE
IPC分类号： G02B6/32 , G02B6/26 , G02B6/28 , G02B6/293 , G02B7/00 , G02B7/10 , G02B27/62
CPC分类号： G02B7/10
摘要： PURPOSE:To expand an angle adjusting range for an optical axis and to match optical axes easily and simply by unitedly fixing a supporting plate, a holding member and a base plate by a coupling parts passed through a notched part of the supporting plate. CONSTITUTION:The supporting plate having an inclined surface on its upper surface and forming a notch 61 is set up on the base plate 1. The holding member 71 having an insersion hole 71 for a ferrule 4 storing optical parts and a notch 72 corresponding to the notch 61 is set up on the supporting plate 6. The substrate 1, the supporting plate 6 and the member 7 are unitedly fixed by a clamping screw 5 through a washer 8.
摘要翻译：目的：为了扩大光轴的角度调节范围，并通过通过支撑板的切口部分的联接部件将支撑板，保持部件和基板统一地固定，从而容易且简单地匹配光轴。构成：在基板1上设置有在其上表面具有倾斜表面并形成切口61的支撑板。具有用于存储光学部件的套圈4的凹槽71的保持构件71和对应于凹部凹槽61设置在支撑板6上。基板1，支撑板6和构件7通过夹紧螺钉5通过垫圈8一体地固定。

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