公开(公告)号：JP2002124687A

公开(公告)日：2002-04-26

申请号：JP2001159756

申请日：2001-05-28

Applicant: SHARP KK

Inventor： FUJITA HIDEAKI ,  ISHII YORISHIGE ,  TAMURA HISAHIRO ,  MATSUSHIMA TOSHIYUKI ,  IWAI YOSHIFUMI ,  KURATA YUKIO

IPC: G02B6/28 ,  G02B6/42 ,  H01L31/02 ,  H01L31/0232 ,  H01S5/022 ,  H04B10/00 ,  H04B10/2507 ,  H04B10/24

Abstract: PROBLEM TO BE SOLVED: To provide a small and low-cost bidrectional optical communication apparatus and bidirectional communication device where a duplex method communication is allowed with a single optical fiber, for less transmission loss both in transmission and reception. SOLUTION: A transmission light 8 emitted from a light-emitting element 4 is condensed by a transmission lens 6 and then coupled to an optical fiber 2 through an optical member 10. A reception light 9 irradiated from the optical fiber 2 is reflected and condensed on a reflection mirror 7 formed at the optical member 10 and coupled to a light-receiving element 4. The transmission light 8 reflected on the end surface of the optical fiber 2 is reflected on a light- shielding part 16 which is a part of the reflection mirror, not coupled to the light receiving element 4.

公开(公告)号：JP2001194560A

公开(公告)日：2001-07-19

申请号：JP2000004251

申请日：2000-01-13

Applicant: SHARP KK

Inventor： FUJITA HIDEAKI ,  ISHII YORISHIGE ,  TAMURA HISAHIRO ,  KURATA YUKIO

IPC: G02B6/42 ,  H04B10/2507 ,  H04B10/2581 ,  H04B10/27 ,  H04B10/29 ,  H04B10/02

Abstract: PROBLEM TO BE SOLVED: To provide an inexpensive and small sized bi-directional optical communication device and bi-directional optical communication equipment in which the whole duplex system communication is performed by one optical fiber and whose transmitting loss in both transmission and reception is small. SOLUTION: Transmitting light 13 radiated from a light emitting element 4 is condensed by a transmission lens 6, passes through the opening part 9 of an optical separation element 8 and is combined to the optical fiber 2. Receiving light 15 radiated from the optical fiber 2 is reflected by a curved surface-like reflecting surface 10 formed on the surface of the optical separation element 8 and is combined to the light receiving element 4. A part of transmitting light 13 (reflected transmitting light 14) reflected by the end surface of the optical fiber 2 whose end surface is inclined is reflected in the outside of the reflecting surface 10 and is not combined to the light receiving element 4.

公开(公告)号：JP2001091720A

公开(公告)日：2001-04-06

申请号：JP26495999

申请日：1999-09-20

Applicant: SHARP KK

Inventor： TAMURA HISAHIRO ,  FUJITA HIDEAKI ,  ISHII YORISHIGE ,  KURATA YUKIO

IPC: G02B5/20

Abstract: PROBLEM TO BE SOLVED: To produce a color filter having an enhanced transmissivity in simplified production steps. SOLUTION: Each of the color pixels 3 of the color filter 7 are formed by imidating a colored polyimide having a photosensitive group in vacuum. The overcoat film 4 is formed by imidating a polyimide having no photosensitive group in vacuum.

公开(公告)号：JP2001049014A

公开(公告)日：2001-02-20

申请号：JP22618899

申请日：1999-08-10

Applicant: SHARP KK

Inventor： FUJITA HIDEAKI ,  ISHII YORISHIGE ,  MATSUSHIMA TOSHIYUKI ,  TAMURA HISAHIRO ,  KURATA YUKIO

IPC: C08J7/00

Abstract: PROBLEM TO BE SOLVED: To provide a method for processing an organic polymer film by which a soot generated in processing an organic polymer film by laser beam irradiation can be efficiently removed in a simple step without deterioration of the surface smoothness of the organic polymer film and to provide a structure having excellent performance provided with the organic polymer film processed by the method, for example, a multilayer wiring structure with high reliability and high density, an optical device with low light loss and ease in integration, or the like. SOLUTION: A portion of an organic polymer film 6 is removed by locally irradiating the organic polymer film 6 with a laser beam by the use of an eximer laser excitation device 1, and then, a plasma treatment with a gas containing a nitrogen atom is carried out. By the above method, a soot generated on the surface of the organic polymer film 6 in processing by the irradiation with a laser beam can be selectively etched away and removed.

公开(公告)号：JP2000241672A

公开(公告)日：2000-09-08

申请号：JP3825699

申请日：1999-02-17

Applicant: SHARP KK

Inventor： FUJITA HIDEAKI ,  ISHII YORISHIGE ,  IWAI YOSHIFUMI ,  MATSUSHIMA TOSHIYUKI ,  TAMURA HISAHIRO ,  KURATA YUKIO

IPC: G02B6/42

Abstract: PROBLEM TO BE SOLVED: To allow transmission and reception by one optical fiber, to reduce losses in both the transmission and the reception, and to make an optical fiber having a large aperture such as a POF coupled highly efficiently. SOLUTION: In this two-way optical communication instrument 1, a transmission light emitted from a light emitting element 5 is bent to a substantially vertical direction to a substrate 6 by a standing mirror 7, and is converged in an end face of an optical fiber 2 by a condenser mirror 3 of a curved face shape to be coupled with the optical fiber 2. On the other hand, a received light propagated through the optical fiber 2 is reflected by the condenser mirror 3 to be convereged on a light receiving element 4.

公开(公告)号：JP2000162460A

公开(公告)日：2000-06-16

申请号：JP33804798

申请日：1998-11-27

Applicant: SHARP KK

Inventor： FUJITA HIDEAKI ,  ISHII YORISHIGE ,  TAMURA HISAHIRO ,  KURATA YUKIO

IPC: G02B6/13 ,  G02B6/12 ,  G02B6/122

Abstract: PROBLEM TO BE SOLVED: To provide an organic optical waveguide facilitating integration with other optical elements and generating fewer residues in machining by reactive ion etching(RIE) by providing a clad part made of an inorganic dielectric body covering a core part and having a refraction index lower than that of the core part. SOLUTION: In an organic light waveguide, a silicon oxide film serving as a buffer layer 2 is formed on a board 1 made of silicone or the like, and a core part 3 made of organic polymer is formed on the buffer layer 2. On the core part 3, an upper part clad 4 serving as a mask, which is an upper clad made of an inorganic dielectric body and serves as a mask in machining of the core part 3 by RIE, is formed. An over clad 5 made of an inorganic dielectric body is formed on the clad 4 so as to cover the core part 3. As the inorganic dielectric body for the clads 4, 5, a material with a refraction index lower than that of the core part 3 is selected. As the inorganic dielectric body, silicon oxide is available, for example.

公开(公告)号：JP2000162455A

公开(公告)日：2000-06-16

申请号：JP33864398

申请日：1998-11-30

Applicant: SHARP KK

Inventor： TAMURA HISAHIRO ,  OKADA NORIAKI ,  FUJITA HIDEAKI ,  ISHII YORISHIGE ,  KURATA YUKIO

IPC: G02B6/30 ,  G02B6/122

Abstract: PROBLEM TO BE SOLVED: To enhance an S/N ratio by preventing light signals for communication from intefering at the time of bidirectional optical communication. SOLUTION: This bidirectional optical communication module using a single core fiber and the optical communication system using the module have on the same substrate a light emitting element 4 for generating signal light, a transmitting optical waveguide 7a for guiding the signal light from the element 4 to an optical fiber 3, a light receiving element 5 for receiving the signal light to convert it into an electric signal, and an receiving optical waveguide 7b for guiding the signal light from the optical fiber 3 to the element 5. The waveguides 7a, 7b are provided optically independently, the waveguide 7a is formed into an L-shape, one side of the L-shape has a function as a transmitting waveguide, and the other side of it has a function as a shielding plate. A light output from a light emitting element source and leaked light from the transmitting waveguide get incident reducedly into a photodetector to enhance an S/N ratio of a photodetector output.

公开(公告)号：JPH10261239A

公开(公告)日：1998-09-29

申请号：JP6519697

申请日：1997-03-18

Applicant: SHARP KK

Inventor： ISHII YORISHIGE

IPC: G02B5/10 ,  G02B7/18 ,  G02B7/185 ,  G02B7/198 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To provide a deformation mirror capable of enhancing a deformability and capable of reducing energy required for an elastic deformation. SOLUTION: The cross-sectional shape of a reference plane substrate 6 having a planar part 34 supporting a flexible member by being closely adhered to the outer peripheral part of the member and a surface part 3 forming a space permitting the elastic deformation of the flexible member in its inner side is formed with a curved line in which when the radius of a part in which an aberration is to be certainly compensated by generating a specific aberration, the radius of a part designed so as to generate the specific aberration, the radius of the deepest part of the curved part 3, the radius of a part transiting from the part 3 to the planar part 34 of peripheral part and the radius of the outer side of the planar part 34 are respectively defined as r1, r2, r3, r4 and r5, a part till r2 is formed with a sphericallity, a part from r1 to r3 is expressed with a function f (r), one inflection point exists in the interval from r1 to r3 and f" (r) becomes >0 in an r3 side from the inflection point.

公开(公告)号：JPH10188319A

公开(公告)日：1998-07-21

申请号：JP34842796

申请日：1996-12-26

Applicant: SHARP KK

Inventor： ABE SHINGO ,  INUI TETSUYA ,  MATOBA KOJI ,  OKADA NORIAKI ,  HIRATA SUSUMU ,  ISHII YORISHIGE ,  FUJITA HIDEAKI

IPC: G11B7/00 ,  G02B26/06 ,  G02B26/08 ,  G11B7/004 ,  G11B7/125 ,  G11B7/135 ,  G11B7/1362 ,  G11B7/1392 ,  G11B7/20

Abstract: PROBLEM TO BE SOLVED: To obtain a deformable mirror which is strong against vibration and a temp. change by fixing a flexible member to be held in between a first substrate and a second substrate and changing over spherical abberations to be applied to light beams to be reflected on a reflection surface while making the member to be attracted to a first reference surface or a second reference surface by a driving device. SOLUTION: A deformable mirror 10 is constituted of a flexible member 1, the first substrate 4 of a lower side, the second substrate 6 of an upper side and a driving device 9. The flexible member 1 is made so that an elastic deformation is possible and has a reflection surface capable of reflecting light beams on its surface of one side. A first reference surface 4a capable of applying a spherial abberation to the light beams when the flexible member 1 is absorped to it is formed on the substrate 4. The substrate 6 is made of transparent material and a second reference surface 4b capable of applying a spherical abberation to the light beams when the flexible member 1 is attracted to it is formed on the substrate 6. The reference surface 4b has the curvature of a direction opposite to that of the reference surface 4a. The flexible member 1 is absorted to one side of either the reference surface 4a or the reference surface 4b by the absorption changeover of the driving device 9.

公开(公告)号：JPH1031107A

公开(公告)日：1998-02-03

申请号：JP18648896

申请日：1996-07-16

Applicant: SHARP KK

Inventor： MATOBA KOJI ,  ISHII YORISHIGE ,  HIRATA SUSUMU ,  ABE SHINGO ,  INUI TETSUYA

IPC: G02B5/10 ,  G02B7/18 ,  G02B7/185 ,  G02B17/08 ,  G11B7/09 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To provide a deformable mirror with which a mirror surface can be accurately deformed into required form and held while being hardly affected by the fluctuation of environment or electric circuit and further the number of apertures on an objective lens can be changed together with aberration compensation corresponding to the thickness of the substrate of an optical disk. SOLUTION: This mirror is provided with a flexible member 2 which can be elastically deformed with its surface as a reflecting plane, and a columnar substrate 7 which is arranged on the rear surface side of this flexible member 2 and has an inside rugged part 4 and an outside rugged part 5 formed at sections facing the rear surface of the flexible member. Then, the flexible member 2 is attracted to the rugged parts 4 and 5, the form of its rear surface is changed, the spherical aberration is changed based on the surface form of the inside rugged part 4 and the numerical apertures is changed based on the surface form of the outside rugged part 5.