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

JP2003066345A Optical switch and method for manufacturing the same 审中-公开
标题翻译：光学开关及其制造方法
公开(公告)号：JP2003066345A
公开(公告)日：2003-03-05
申请号：JP2001257994
申请日：2001-08-28
申请人： Minolta Co Ltd , ミノルタ株式会社
发明人： TAKAHARA HIROSHIGE , HATANO TAKUJI , NISHIDA NAOKI , TERAMOTO MIYUKI , SEKINE KOJIRO , YAMAMOTO HIROKO
IPC分类号： G02B26/08 , G02B6/13
摘要： PROBLEM TO BE SOLVED: To provide an optical switch which can reduce light loss in guiding and to provide a method for manufacturing the same. SOLUTION: The optical switch 1 is provided with an optical waveguide 14 formed on a substrate 10, a fluid channel 9 in which a fluid is circulated across the optical waveguide 14, a switching member 3 arranged in the fluid channel 9, and a cover member 16 to seal the upper surface of the fluid channel 9. The optical switch 1 changes a direction of propagation of light passing through the optical waveguide 14 by moving the switching member 3 by the circulation of the fluid between a position on the optical path of the optical waveguide 14 and a position retreated from the optical path of the optical waveguide 14. The height H of the fluid channel 9 is set to be 40 μm or more.
摘要翻译：要解决的问题：提供一种可以减少引导中的光损失并提供其制造方法的光开关。解决方案：光开关1设置有形成在基板10上的光波导14，流体在光波导14上循环的流体通道9，布置在流体通道9中的切换构件3和盖构件 16，以密封流体通道9的上表面。光开关1通过移动切换构件3而使通过光波导14的光的传播方向改变，光波导14和从光波导14的光路退出的位置。流体通道9的高度H设定为40μm以上。

2. 发明专利

JP2002174723A POLARIZATION CONVERTING OPTICAL SYSTEM AND POLARIZATION CONVERTING DEVICE 失效
公开(公告)号：JP2002174723A
公开(公告)日：2002-06-21
申请号：JP2000370952
申请日：2000-12-06
申请人： MINOLTA CO LTD
发明人： TAKAHARA HIROSHIGE , TAKADA TAMA , SEKINE KOJIRO , HATANO TAKUJI
IPC分类号： G02B5/18 , G02B5/30 , G03B21/00 , G03B21/14 , H04N5/64
摘要： PROBLEM TO BE SOLVED: To decrease the size of a polarization converting optical system which converts light with random polarization planes into light having aligned polarization planes. SOLUTION: The polarization converting optical system consists of a dielectric multilayered film which transmits p-polarized light and reflects s-polarized light at a first incident angle and which transmits s-polarized light at a second incident angle, a diffraction grating which reflects the light entering the dielectric multilayered film at the first incident angle and transmitting the film so that the light enters again the dielectric multilayered film at the second incident angle, and a 1/4 wavelength plate disposed between the dielectric multilayered film and the diffraction element. These elements are integrated to constitute a polarization converting device.

3. 发明专利

JP2002169011A DIFFRACTION OPTICAL ELEMENT AND METHOD FOR MANUFACTURING SURFACE FORM OF DIFFRACTION GRATING 失效
公开(公告)号：JP2002169011A
公开(公告)日：2002-06-14
申请号：JP2000369686
申请日：2000-12-05
申请人： MINOLTA CO LTD
发明人： TAKADA TAMA , HATANO TAKUJI , SEKINE KOJIRO , TAKAHARA HIROSHIGE
IPC分类号： G02B5/18
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing the surface form of a diffraction grating having high diffraction efficiency although the grating is a multilevel binary type one. SOLUTION: In the manufacture of the surface form of a diffraction grating by etching a substrate a plurality of times, when the edge of the region reserved in the preceding step is to be processed in the succeeding step, the mask in the succeeding step is set in the position shifted from the position where the edge of the opening of the mask coincides with the edge of the reserved region in the preceding step to the direction where the region to be processed in the succeeding step overlaps the region processed in the preceding step. The slope produced in a part along the reserved region in the processed region in the preceding step is removed by the process of the succeeding step, which prevents the formation of projections by adjacent slopes in opposite directions. This results in improvement in the diffraction efficiency.

4. 发明专利

JP2002338271A METHOD FOR MANUFACTURING DIE, DIE, OPTICAL ELEMENT AND METHOD FOR MANUFACTURING OPTICAL ELEMENT 失效
公开(公告)号：JP2002338271A
公开(公告)日：2002-11-27
申请号：JP2001144661
申请日：2001-05-15
申请人： MINOLTA CO LTD
发明人： SATO AKIRA , TAKAHARA HIROSHIGE
IPC分类号： G02B3/00 , B22C13/00 , B81C99/00 , C03B11/00 , C03B11/08 , B81C5/00
摘要： PROBLEM TO BE SOLVED: To manufacture optical element and parts of high accuracy. SOLUTION: A pre-shaped die is manufactured by machining and polishing a superalloy essentially consisting of tungsten carbide as a blank to a desired shape, then coating the surface thereof with silicon as a protective layer by a plasma enhanced CVD process, and further, coating the surface thereof with a chromium nitride of 1 μm in thickness. The shape of the manufactured pre- shaped die or the shape of a sample manufactured by the same is measured and the shape correction rate of the pre-shaped die 30 for a lower die is determined from the error of the manufacture. Further, the lower die forming surface 301 of the pre-shaped die 30 for the lower die is subjected to correction by etching in such a manner that a desired accuracy is obtained therein, by which the die is perfected. The optical elements and parts are manufactured by using such die.

5. 发明专利

JP2002333583A OPTICAL SWITCH 失效
公开(公告)号：JP2002333583A
公开(公告)日：2002-11-22
申请号：JP2001141012
申请日：2001-05-11
申请人： MINOLTA CO LTD
发明人： NISHIDA NAOKI , HATANO TAKUJI , TAKAHARA HIROSHIGE , TERAMOTO MIYUKI , SEKINE KOJIRO
IPC分类号： G02B26/08
摘要： PROBLEM TO BE SOLVED: To provide an optical switch which has a simple structure and is easily controlled, in which desired optical elements among a plurality of optical elements supported on a movable member are surely located on an optical waveguide. SOLUTION: A projected part is provided at the movable member located inside a groove which crosses with the optical wave guide and is filled with matching oil, a plurality of notches the number of which is equal to the array pitch of the optical elements on the movable member are provided on the side face of the groove. The movable member is moved by giving a first driving force with a micro pump, and the movable member is stopped by a braking force exerted by the engagement of the projected part and the groove. Further, a second driving force larger than the first driving force is exerted to start the movement of the movable member which is stopping due to the braking force.

6. 发明专利

JP2000221313A DYNAMIC DIFFRACTING ELEMENT 失效
公开(公告)号：JP2000221313A
公开(公告)日：2000-08-11
申请号：JP2119199
申请日：1999-01-29
申请人： MINOLTA CO LTD
发明人： OSADA HIDEKI , OTOSHI YUICHIRO , SATO AKIRA , TAKAHARA HIROSHIGE , TAKAMA MASAAKI , OCHI KEIZO
IPC分类号： G02B26/08 , G02B5/08 , G02B5/18
摘要： PROBLEM TO BE SOLVED: To provide the dynamic diffracting element which makes it possible to freely set the diffracting direction of an electromagnetic wave and can greatly be varied in diffraction degree and diffraction angle. SOLUTION: A mirror 11 is constituted by arraying mirror raw elements 12 which have flat reflecting surfaces in two dimensions and each mirror raw piece is equipped with a driving part which drives the mirror raw element at right angles to the reflecting surface. The reflecting surface 11a of the mirror 11 is made uneven by driving the mirror raw elements 12 to diffract a reflected electromagnetic wave. For a driving part, PZT is used. The driving part can be constituted so that a fixed member forming a space closed with the mirror raw piece, liquid charged in the space, and a heater which heats and vaporizes the liquid are provided and the mirror raw piece 12 is driven by volume variation of the space by the vaporization of the liquid.

7. 发明专利

JP2002169010A DIFFRACTION OPTICAL ELEMENT 失效
公开(公告)号：JP2002169010A
公开(公告)日：2002-06-14
申请号：JP2000368614
申请日：2000-12-04
申请人： MINOLTA CO LTD
发明人： SEKINE KOJIRO , TAKAHARA HIROSHIGE , TAKADA TAMA , HATANO TAKUJI
IPC分类号： G02B5/18
摘要： PROBLEM TO BE SOLVED: To provide a diffraction optical element having a diffraction grating formed on a thin film applied on a substrate and having stable diffraction performance. SOLUTION: The thin film is formed to have the thickness larger than the height difference of recesses and projections of the diffraction grating and the height difference is strictly controlled during forming the recesses and projections. The thin film is formed by vacuum vapor deposition or sputtering to roughly control its thickness. Processing of the film to form the recesses and projections is carried out by etching because the processing amount is easily controlled. Further, by forming the thin film form a material having a high refractive index, the height difference of the recesses and projections of the diffraction grating is reduced and the diffraction efficiency is increased.

8. 发明专利

JP2002162513A DIFFRACTIVE OPTICAL ELEMENT 失效
公开(公告)号：JP2002162513A
公开(公告)日：2002-06-07
申请号：JP2000356961
申请日：2000-11-24
申请人： MINOLTA CO LTD
发明人： TAKADA TAMA , HATANO TAKUJI , TAKAHARA HIROSHIGE , SEKINE KOJIRO
IPC分类号： G02B5/18
摘要： PROBLEM TO BE SOLVED: To enhance the reflectance of a diffractive optical element comprising a substrate, having a diffraction grating formed on the surface and a dielectric multilayer film disposed on the diffraction grating on the surface of the substrate, and having steps nearly perpendicular with respect to the entire surface of the substrate in the diffraction grating. SOLUTION: A dielectric multilayer film including two dielectric layers is disposed on a diffraction grating on a substrate, in a thickness larger than the steps of the diffraction grating in a first cycle of laminating, the size of the steps is multiplied integral number of times against as the total thickness of the two dielectric layers, and only the same dielectric layer is made continuous on the steps. A wavelength λ of light to be reflected, a refractive index n0 of the substrate and refractive indexes n1 and n2 of the two dielectric layers are set, so as to satisfy the relation 2/n0=m (1/n1+1/n2) or 2=m (1/n1+1/n2) (where (m) is an integer >=1) and maximize the diffraction efficiency and reflectance are made maximum.

9. 发明专利

JP2001013473A LIGHT SHUTTER 失效
公开(公告)号：JP2001013473A
公开(公告)日：2001-01-19
申请号：JP18346499
申请日：1999-06-29
申请人： MINOLTA CO LTD
发明人： KITAOKA KENJI , HATANO TAKUJI , TAKAHARA HIROSHIGE
IPC分类号： B41J2/445 , G02F1/035 , G02F1/055
摘要： PROBLEM TO BE SOLVED: To obtain an optical modulation element (light shutter) which realizes a lower voltage for driving a shutter by controlling contact length between electrodes and a ferroelectric fiber in a cross section of the element to a specified proportion range of the peripheral length of the cross section of the ferroelectric fiber. SOLUTION: A pair of electrodes 2 are directly formed on the peripheral surface of a ferroelectric fiber 1 to face each other. By directly forming the electrode pair 2 on the ferroelectric fiber 1, voltage to be applied is directly applied on the fiber 1 so that an element can be driven at the lower voltage. in the cross section perpendicular to the major axis of the optical modulation element 3, contact length of each electrode (one of the electrode pair 2) and the ferroelectric fiber 1 is specified to 15 to 35% of the peripheral length of the cross section of the ferroelectric fiber (in total 30 to 70% for the two electrodes), preferably 20 to 30% (in total 40 to 60%). Therefore, the driving voltage is decreased and deflection of an electric field in the fiber can be decreased. Moreover, pixels can be formed with high density.

10. 发明专利

JP2000214399A DYNAMIC DIFFRACTION GRATING ELEMENT 失效
公开(公告)号：JP2000214399A
公开(公告)日：2000-08-04
申请号：JP1652899
申请日：1999-01-26
申请人： MINOLTA CO LTD
发明人： OSADA HIDEKI , OTOSHI YUICHIRO , SATO AKIRA , TAKAHARA HIROSHIGE , TAKAMA MASAAKI , OCHI KEIZO
IPC分类号： G02B26/08 , G02F1/01
摘要： PROBLEM TO BE SOLVED: To obtain a dynamic diffraction grating element capable of largely changing diffraction conditions. SOLUTION: Magnetic powders 14 are freely movably disposed between two sheets of flat plates arranged to face each other. Magnetic fields of which the lines of magnetic fluxes intersect approximately orthogonally with the flat plates are formed by electromagnets 15. The magnetic powders 14 are distributed to a band form of plural concentric circles according to the lines of magnetic fluxes constituting the concentric circle in cross-section, by which plural belt-like openings are formed between the magnetic powders 14. The electromagnetic waves passing the openings, when the waves are emitted, are interfered and diffracted with the other electromagnetic waves emitted from the other openings. The density of the lines of magnetic fluxes is changed, by which the spacings of the openings are changed and the diffraction conditions of the electromagnetic waves are changed. The diffraction occurs in a direction perpendicular to the tangent of the openings and can converge or diver the electromagnetic waves.

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