公开(公告)号：DE69735732T2

公开(公告)日：2006-09-21

申请号：DE69735732

申请日：1997-09-24

Applicant: SEIKO EPSON CORP

Inventor： FUNAMOTO TATSUAKI ,  YOKOYAMA OSAMU ,  MIYASHITA SATORU ,  KUBOTA KANEMITSU

IPC: G02B6/00 ,  F21V8/00 ,  F21Y101/00 ,  G02B6/42 ,  G02F1/13357

Abstract: A liquid crystal display device, comprising a liquid crystal display (2001) including a reflector (2002); and an illumination device arranged at the front side of the liquid crystal display (2001), the illumination device comprising a light-guide (11) plate with transparency having a first face on which an optical extraction structure is formed and a second face being opposite to the first face; and a light source (2) arranged so as to introduce light in the light-guide (11) wherein the second face is adapted to face the liquid crystal display (2001).

公开(公告)号：DE69735732D1

公开(公告)日：2006-05-24

申请号：DE69735732

申请日：1997-09-24

Applicant: SEIKO EPSON CORP

Inventor： FUNAMOTO TATSUAKI ,  YOKOYAMA OSAMU ,  MIYASHITA SATORU ,  KUBOTA KANEMITSU

IPC: G02B6/00 ,  F21V8/00 ,  F21Y101/00 ,  G02B6/42 ,  G02F1/13357

Abstract: A liquid crystal display device, comprising a liquid crystal display (2001) including a reflector (2002); and an illumination device arranged at the front side of the liquid crystal display (2001), the illumination device comprising a light-guide (11) plate with transparency having a first face on which an optical extraction structure is formed and a second face being opposite to the first face; and a light source (2) arranged so as to introduce light in the light-guide (11) wherein the second face is adapted to face the liquid crystal display (2001).

公开(公告)号：AT279741T

公开(公告)日：2004-10-15

申请号：AT97918399

申请日：1997-05-09

Applicant: SEIKO EPSON CORP

Inventor： YOKOYAMA OSAMU ,  MIYASHITA SATORU ,  SHIMODA TATSUYA

IPC: G02F1/1335 ,  G02F1/13357 ,  H01L51/52 ,  H04N9/31 ,  H05B33/22 ,  G02F1/13 ,  H05B33/12

Abstract: A liquid-crystal projection device according to the present invention comprises an organic electroluminescent element 12 that is constituted by sandwiching an organic thin-film layer (125) between an electrode layer (126) that reflects light and a transparent electrode layer (123) that transmits light, and a transparent liquid crystal panel (20) that controls passage of light emitted from the surface of the organic electroluminescent element 12; and also comprises a half-mirror layer (121) arranged on the side where light is output from this transparent electrode layer (123) and that reflects some of the incoming light through the transparent electrode layer (123) to electrode layer (126) and that transmits the rest of this light; the distance between the half-mirror layer (121) and the electrode layer (126) being set to the optical distance of resonance of this light.

公开(公告)号：DE69724411T2

公开(公告)日：2004-06-09

申请号：DE69724411

申请日：1997-09-24

Applicant: SEIKO EPSON CORP

Inventor： FUNAMOTO TATSUAKI ,  YOKOYAMA OSAMU ,  MIYASHITA SATORU ,  KUBOTA KANEMITSU

IPC: F21V8/00 ,  F21Y101/00 ,  G02B6/00 ,  G02B6/42 ,  G02F1/13357

Abstract: A liquid crystal display device, comprising a liquid crystal display (2001) including a reflector (2002); and an illumination device arranged at the front side of the liquid crystal display (2001), the illumination device comprising a light-guide (11) plate with transparency having a first face on which an optical extraction structure is formed and a second face being opposite to the first face; and a light source (2) arranged so as to introduce light in the light-guide (11) wherein the second face is adapted to face the liquid crystal display (2001).

公开(公告)号：DE69628634D1

公开(公告)日：2003-07-17

申请号：DE69628634

申请日：1996-11-06

Applicant: SEIKO EPSON CORP

Inventor： MIYASHITA SATORU ,  YOKOYAMA OSAMU ,  FUNAMOTO TATSUAKI

IPC: F21V8/00 ,  G02B6/00

Abstract: A lighting apparatus (10) comprises: light emitting means (322); light guiding means (307) which has a light-output-side surface and guides the light from said light emitting means (322) through said light-output-side surface toward a light receiving element (302) with an improved directivity; and direction changing means for changing the direction of the light which is output from said light guiding means (307) to a direction substantially perpendicular to said light receiving element (302). The direction changing means (321) includes a prism array which comprises a plurality of prisms, each of said prisms having an apex pointing to said light-output-side surface; wherein each of said prisms has a first surface for receiving the light and a second surface, said apex being formed by said first and second surfaces.

公开(公告)号：DE69808318T2

公开(公告)日：2003-01-23

申请号：DE69808318

申请日：1998-04-17

Applicant: SEIKO EPSON CORP

Inventor： YOKOYAMA OSAMU ,  SHIMODA TATSUYA ,  MIYASHITA SATORU

IPC: G02B26/08

公开(公告)号：DE69515615D1

公开(公告)日：2000-04-20

申请号：DE69515615

申请日：1995-12-13

Applicant: SEIKO EPSON CORP

Inventor： YOKOYAMA OSAMU ,  KANEKO TAKEO

IPC: G01S7/48 ,  G01S7/481 ,  G01S7/484 ,  G01S17/02 ,  G01S17/93

Abstract: A light-sensing device comprises a light source consisting of a semiconductor laser (100), a light-transmitting optical system having a lens surface (12) and a diffraction grating surface (14) arranged on the optical axis of light emitted from this light source, and a light-receiving detection system (20) that detects any of the emitted light that is reflected from an object to be inspected. This emitted light is diffracted in at least two intersecting directions by the diffraction grating surface.

公开(公告)号：DE69502643T2

公开(公告)日：1998-11-12

申请号：DE69502643

申请日：1995-02-28

Applicant: SEIKO EPSON CORP

Inventor： IWANO HIDEAKI ,  YOKOYAMA OSAMU ,  NOMURA HIROAKI

IPC: H01S3/00 ,  H01S5/00 ,  H01S5/028 ,  H01S5/20 ,  H01S5/343 ,  H01S3/19 ,  H01S3/025 ,  G01B11/00

Abstract: A semiconductor laser comprises AlGaAs-type semiconductor layers (SL) deposited on a substrate (101) and a current constriction layer (109) having at least one stripe-shaped current injection region (112). The semiconductor layers comprise: a first cladding layer (103) of the first conductivity type, a first optical waveguide layer (104) of the first conductivity type formed on the first cladding layer, an active layer (105) formed on the first optical waveguide layer and having a quantum-well structure, a second optical waveguide layer (106) of a second conductivity type formed on the active layer, a second cladding layer (107) of the second conductivity type formed on the second optical waveguide layer, and a contact layer (108) formed on the second cladding layer. The active layer has flatness of such a degree that roughness with respect to a reference surface within a unit area of 1 mm x 1 mm is no more than +/-0.1 mu m, the width of the current injection region of the current constriction layer is between 100 mu m to 250 mu m, and the resonator length is between 500 mu m to 1,000 mu m. This semiconductor laser is part of a light-sensing device which contains a light receiving optical system and further a light-transmitting optical system comprising a diffraction grating and a lens with toric or anamorphic aspheric surface.

公开(公告)号：DE69738972D1

公开(公告)日：2008-10-23

申请号：DE69738972

申请日：1997-07-02

Applicant: SEIKO EPSON CORP

Inventor： KANEKO TAKEO ,  YOKOYAMA OSAMU ,  NEBASHI SATOSHI ,  SHIMODA TATSUYA

IPC: G02F1/13 ,  G09G3/36 ,  G02F1/1335 ,  G02F1/13357 ,  G09F9/35 ,  H01L33/08 ,  H01L33/38 ,  H01L33/58 ,  H01L33/60 ,  H01S3/00 ,  H01S5/00

Abstract: A liquid crystal display device has a light source and includes a two-dimensional light-emitting element array plate formed of a plurality of light-emitting elements arranged in a plane array, and a liquid crystal panel having a plurality of pixels. Each of the pixels corresponds to each of the light-emitting elements. A light-projecting portion of each of the light-emitting elements is disposed within a light-transmitting region of the corresponding pixel.

公开(公告)号：DE69636109T2

公开(公告)日：2006-09-21

申请号：DE69636109

申请日：1996-11-06

Applicant: SEIKO EPSON CORP

Inventor： MIYASHITA SATORU ,  YOKOYAMA OSAMU ,  FUNAMOTO TATSUAKI

IPC: F21V8/00 ,  G02B6/00

Abstract: A lighting apparatus (10) comprises: light emitting means (322); light guiding means (307) which has a light-output-side surface and guides the light from said light emitting means (322) through said light-output-side surface toward a light receiving element (302) with an improved directivity; and direction changing means for changing the direction of the light which is output from said light guiding means (307) to a direction substantially perpendicular to said light receiving element (302). The direction changing means (321) includes a prism array which comprises a plurality of prisms, each of said prisms having an apex pointing to said light-output-side surface; wherein each of said prisms has a first surface for receiving the light and a second surface, said apex being formed by said first and second surfaces.