公开(公告)号：JP2002323643A

公开(公告)日：2002-11-08

申请号：JP2001125772

申请日：2001-04-24

Applicant: SHARP KK

Inventor： FUJITA HIDEAKI ,  ISHII YORISHIGE ,  TAMURA HISAHIRO

IPC: G02B6/32 ,  G02B6/42 ,  H01L31/0232 ,  H01L33/00 ,  H01L33/48 ,  H01S5/022 ,  H04B10/00 ,  H04B10/25 ,  H04B10/2507 ,  H04B10/2581 ,  H04B10/12 ,  H04B10/13 ,  H04B10/135 ,  H04B10/14 ,  H04B10/24

Abstract: PROBLEM TO BE SOLVED: To provide a inexpensive and compact two-way optical communication device and a two-way optical communication equipment with which the variation of the reception efficiency depending on a transmission distance is decreased, the limitation on the transmission distance is decreased, and a cross talk between transmitting and receiving lights is decreased. SOLUTION: The relation θfb [ n0 Sin(θL+Sin (NA)/n0 +θT)}/ nf -θT, and θfb =Sin [ n0 Sin(θL-Sin (NA)/n0 +θT)}/nf -θT) where θL stands for an angle between the optical axis of the transmission light 8 and the optical axis of the optical fiber 2, θT stands for an angle between the normal line of the end face of the optical fiber 2 at the position S, NA stands for the aperture number before the transmission light 8 is made incident on the optical fiber 2, nf stands for the refractive index of the core of the optical fiber 2, and n0 stands for the refractive index of air.

公开(公告)号：JP2001188148A

公开(公告)日：2001-07-10

申请号：JP37212199

申请日：1999-12-28

Applicant: SHARP KK

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

IPC: G02B6/42 ,  H01L31/0232 ,  H04B10/00 ,  H04B10/114 ,  H04B10/25 ,  H04B10/24

Abstract: PROBLEM TO BE SOLVED: To provide an inexpensive and small-sized bi-directional optical communicator and a bi-directional optical communicating device realizing an all double system with a single line of optical fiber ad having a reduced transmission loss both in transmission and reception. SOLUTION: A transmission beam 13 emitted from a light emitting element 4 is converged by a transmission lens 6 and passes through a transmission area 9 of a light separating element 8 to be coupled with the optical fiber 2. A reception beam 15 emitted from the optical fiber 2 is reflected with a curved reflection surface 10 formed on the light separating element 8 surface to be coupled with a light receiving element 4. Part of the transmission beam 13 (reflected transmission beam 14) reflected by he optical fiber 2 passes through the transmission area 9 not to be coupled with the light receiving element 4.

公开(公告)号：JPH1114919A

公开(公告)日：1999-01-22

申请号：JP17077397

申请日：1997-06-26

Applicant: SHARP KK

Inventor： FUJITA HIDEAKI ,  HIRATA SUSUMU ,  ISHII YORISHIGE ,  OGAWA MASARU ,  ABE SHINGO

IPC: G02B26/08 ,  G02B5/10 ,  G02B7/18 ,  G02B26/00 ,  G02B7/185

Abstract: PROBLEM TO BE SOLVED: To provide a deformable mirror which prevents an insulating member from being charged electrostatically and holds the deforming shape of a plastic member with high precision. SOLUTION: The deformable mirror 1 consists roughly of a mirror substrate 2, a reference substrate 3, and a voltage application part 4. Switching between the deformation and nondeformation of the deformable mirror 1 is controlled by a voltage application part 4. When the voltage application part 4 applies an alternating voltage between a flexible member 5 and a counter electrode 8, an electrostatic attractive force is generated between the both and the flexible member 5 is attracted to a reference surface 7 to deform in conformity with the reference surface 7. When the application of the AC voltage by the voltage application part 4 is stopped, no electrostatic attractive force operates between the flexible member 5 and counter electrode 8, so that the flexible member 5 is put back into its initial shape.

公开(公告)号：JPH1055557A

公开(公告)日：1998-02-24

申请号：JP21177796

申请日：1996-08-09

Applicant: SHARP KK

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

IPC: G02B5/10 ,  G02B7/18 ,  G02B7/198 ,  G02B26/08 ,  G11B7/09 ,  G11B7/135 ,  G02B7/185

Abstract: PROBLEM TO BE SOLVED: To provide a deformable mirror capable of precisely deforming a mirror surface, holding it, improving a deformability and consequently reducing energy required for elastic deformation. SOLUTION: This deformable mirror 1 is provided with a flexible member 2 having a reflection surface reflecting incident light on its surface and a reference surface substrate arranged opposite to the rear surface of the flexible member, having a flat part 34 sticking to the outer peripheral part of the flexible member 2 and supporting it on the outer peripheral part and having a rugged surface 3 forming a space allowing the elastic deformation of the flexible member 2 on the inside of the flat part 34. In such a case, the height of the central part 35 of the sectional shape of the rugged surface 3 is set in the height or below of the flat part 34.

公开(公告)号：JPH0911456A

公开(公告)日：1997-01-14

申请号：JP16583695

申请日：1995-06-30

Applicant: SHARP KK

Inventor： ABE SHINGO ,  ONDA YUTAKA ,  INUI TETSUYA ,  MATOBA KOJI ,  HIRATA SUSUMU ,  KIMURA MASAHARU ,  ISHII YORISHIGE ,  HORINAKA MASARU

IPC: B41J2/045 ,  B41J2/055

Abstract: PURPOSE: To increase a discharge speed of ink, to obtain a long life and also a high nozzle density, to lessen a cross talk and to enhance frequency responsiveness by disposing a plurality of buckled structure bodies in juxtaposition in the longitudinal direction in one vessel. CONSTITUTION: An ink jet head is constructed of case bodies 5 each having buckled structure bodies 1, a diaphragm, a fitting member, a coupling part and an ink supply port 5a, of nozzle plates 7 each having a pressure chamber 6a and an ink discharge port 7a and of a switch and a power source. As to the principle of discharge of ink, there are a type wherein the shape of the buckled structure body is changed by electrification thereof and the buckled structure body applies a pressure directly to ink 100 in the pressure chamber 6a and makes the ink discharged as an ink droplet, a type wherein the shape of the buckled structure body 1 is changed by electrification thereof and thereby the body applies a pressure to the ink 100 in the pressure chamber 6a through the diaphragm and makes the ink discharged, and others.

公开(公告)号：JPH08336965A

公开(公告)日：1996-12-24

申请号：JP14731695

申请日：1995-06-14

Applicant: SHARP KK

Inventor： ABE SHINGO ,  INUI TETSUYA ,  MATOBA KOJI ,  HIRATA SUSUMU ,  KIMURA MASAHARU ,  ISHII YORISHIGE ,  HORINAKA MASARU ,  ONDA YUTAKA

IPC: B41J2/045 ,  B41J2/055 ,  B41J2/14

Abstract: PURPOSE: To provide a head with a long service life which is an ink-jet head which generates pressure in an ink chamber and discharges ink liquid outside the chamber through an ink discharge opening, can be constituted in a small size, and can increase the discharging force and discharge speed of ink. CONSTITUTION: An ink chamber 6a has a window opening 4a on the wall surface 4 opposite to an ink discharge opening 7a. A pressure generating plate 2 which is made from a flexible material and blocks the opening 4a substantially liquid tightly is provided. In the plate 2, a part which makes both ends in regard to at least one direction in a peripheral part 2c is installed on the wall surface 4. A deformation means 1 which makes the plate 2 take a flat non-displacement state and a displacement state in which a middle part 2a between both ends installed on the wall surface 4 is displaced perpendicularly to the wall surface 4 is provided.

公开(公告)号：JPH08164605A

公开(公告)日：1996-06-25

申请号：JP31099894

申请日：1994-12-14

Applicant: SHARP KK

Inventor： INUI TETSUYA ,  MATOBA KOJI ,  HIRATA SUSUMU ,  ISHII YORISHIGE ,  ABE SHINGO ,  KIMURA MASAHARU ,  HORINAKA MASARU ,  ONDA YUTAKA

IPC: B41J2/045 ,  B41J2/055 ,  B41J2/14 ,  B41J2/16

Abstract: PURPOSE: To obtain a highly integrated ink jet head which is long in life and quick in driving speed. CONSTITUTION: An ink jet head of a type in which a driver 102 is thermally deformed is used, which is attempted to make long life. Further, when the driver 102 is thermally deformed, an ink chamber 105 is pressurized, and ink is discharged. However, since a vacant space 110 is provided on a rear face of the driver 102, and an ink the thermal conductivity of which is higher than that of air is filled into the air vacant, the driver 102 is cooled quickly and can be driven at a high speed. Further, since the driver 102 does not require machining such as that for a piezoelectric element, the ink jet head can be highly integrated.

公开(公告)号：JPH0834117A

公开(公告)日：1996-02-06

申请号：JP17137194

申请日：1994-07-22

Applicant: SHARP KK

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

IPC: B41J2/045 ,  B41J2/055 ,  B41J2/16

Abstract: PURPOSE:To provide an ink jet head which has a response property excellent for heating and cooling, and is suitable for high speed printing. CONSTITUTION:A nozzle plate 111 has a nozzle orifice 111a. At a predetermined distance from the nozzle orifice 111a, an ink supply opening 107 having an opposite opening end is provided on a base plate 105. A central part of a buckling structure 101 is positioned in between the nozzle orifice 111a and the opening of the ink supply opening 107, and both ends of the structure are supported by at least the base plate 105. A compression means gives compressive stress to the inside of the buckling structure 101 by heating. The base plate 105 has a thickness of 20mum or more and the ink supply opening 107 penetrates the base plate 105 in the thickness direction. The opening area of the ink supply opening 107 is 900mum or less at its opening end. The buckling structure 101 is buckled by the compressive stress given by the compression means and the central part of the buckling structure 101 is deformed toward the nozzle orifice 111a.

公开(公告)号：JPH0820108A

公开(公告)日：1996-01-23

申请号：JP15726194

申请日：1994-07-08

Applicant: SHARP KK

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

IPC: B41J2/045 ,  B41J2/055 ,  B41J2/16

Abstract: PURPOSE:To provide an ink jet head with efficient discharge characteristic by employing a buckling body. CONSTITUTION:An ink supply port 102 is provided to a substrate 101. A buckling body, fixed at its both ends to the substrate 101 and capable of deforming in buckling deformation, is heated with a heater layer 109 provided thereto, and moves inside the ink supply port 102 in the direction vertical to the substrate 101. Ink is discharged by movement of a piston 103 that is in a size approximately the same as the ink supply port 102 and moves in the direction vertical to the substrate.

公开(公告)号：JPH07314673A

公开(公告)日：1995-12-05

申请号：JP11532294

申请日：1994-05-27

Applicant: SHARP KK

Inventor： ABE SHINGO ,  OTA KENJI ,  INUI TETSUYA ,  MATOBA KOJI ,  HIRATA SUSUMU ,  ISHII YORISHIGE ,  TERAJIMA SHIGEO

IPC: B41J2/045 ,  B41J2/055 ,  B41J2/14 ,  B41J2/16

Abstract: PURPOSE:To obtain a high discharge force with a size kept small by making use of an ink pressure generator for which a buckling structural body is used. CONSTITUTION:A plurality of buckling structural bodies 1, 1 are fitted to the inside of a box body 5 having an ink discharge port 5a and ink supply port 5b through fitting members 3, 3. A partition wall propagating pressure is not provided between the buckling structural bodies each.