Patent US4414085A successfully refreshed from Google Patents.
EP0174008A2
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Device for processing optical data
Assignee: Omron Corp
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Filing: 1985-09-03
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Granted: —
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Expires: 2005-09-03
Abstract
Abstract A device for processing optical data comprising: an optical waveguide formed on a substrate, a light source for the laser beam to be admitted into the waveguide, lens means provided on the waveguide for causing the beam propagating through the waveguide to emerge obliquely upward and focusing the emergent beam two-dimensionally, means for receiving the beam reflected obliquely from above, a base provided with the laser light source, the substrate and the light receiving means, a focusing drive mechanism for adjusting the position of the base upward or downward, and a tracking drive mechanism for adjusting the position of the base laterally.
Inventors
- 👤 Tsukasa Omron Tateisi Electronics Co. Yamashita
- 👤 Nobuhisa Omron Tateisi Electronics Co. Inoue
- 👤 Shiro Omron Tateisi Electronics Co. Ogata
- 👤 Mitsutaka Omron Tateisi Electronics Co. Katoh
- 👤 Masaharu Omron Tateisi Electronics Co. Matano
- 👤 Kazuhiko Omron Tateisi Electronics Co. Mori
- 👤 Isao Omron Tateisi Electronics Co. Taguchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 16:47
CPC Classifications
G; G11; G11B; G11B11/00; G11B11/10; G11B11/105; G11B11/1055; G11B11/10576; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/34; G02B6/42; G11B11/10532; G11B11/10556; G11B7/00; G11B7/08; G11B7/09; G11B7/12; G11B7/123; G11B7/124; G11B7/135; G11B7/1372; G11B7/1374; G11B7/1384; G02B6/4201; G02B6/4204; G02B6/4207
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
102 words
A device for processing optical data comprising: an optical waveguide formed on a substrate, a light source for the laser beam to be admitted into the waveguide, lens means provided on the waveguide for causing the beam propagating through the waveguide to emerge obliquely upward and focusing the emergent beam two-dimensionally, means for receiving the beam reflected obliquely from above, a base provided with the laser light source, the substrate and the light receiving means, a focusing drive mechanism for adjusting the position of the base upward or downward, and a tracking drive mechanism for adjusting the position of the base laterally.
Claim 2
Independent Claim
102 words
A device for processing optical data comprising: an optical waveguide formed on a substrate, a light source for the laser beam to be admitted into the waveguide, lens means provided on the waveguide for causing the beam propagating through the waveguide to emerge obliquely upward and focusing the emergent beam two-dimensionally, means for receiving the beam reflected obliquely from above, a base provided with the laser light source, the substrate and the light receiving means, a focusing drive mechanism for adjusting the position of the base upward or downward, and a tracking drive mechanism for adjusting the position of the base laterally.
Claim 3
Dependent Claim
24 words
A device as defined in claim 1 wherein the waveguide, the lens means and the light receiving means are provided on the same substrate.
Claim 4
Dependent Claim
37 words
A device as defined in claim 1 wherein the lens means causes the beam propagating through the waveguide to emerge obliquely upward as separated into three beams and focus the separated beams two-dimensionally at three different positions.
Claim 5
Dependent Claim
62 words
A device as defined in claim 1 which further comprises circuits for respectively producing a reading signal, a focusing error detection signal and a tracking error detection signal from the light receiving signals from the light receiving means, the focusing drive mechanism being controllable by the focusing error detection signal, the tracking drive mechanism being controllable by the tracking error detection signal.
Claim 6
Dependent Claim
27 words
A device as defined in claim 1 wherein a leak light blocking groove is formed on the substrate between the lens means and the light receiving means.
Claim 7
Dependent Claim
22 words
A device as defined in claim 1 wherein means is provided for detecting the intensity of the beam propagating through the waveguide.
Claim 8
Dependent Claim
25 words
A device as defined in claim 6 wherein the beam intensity detecting means is formed on the substrate for detecting leak light from the waveguide.
Claim 9
Dependent Claim
21 words
A device as defined in claim 1 wherein the laser light source is a semiconductor laser formed integrally with the substrate.
Claim 10
Dependent Claim
32 words
A device as defined in claim 1 wherein the substrate formed with the light receiving means has a circuit formed by integration for amplifying the output signal from the light receiving means.
Claim 11
Independent Claim
71 words
A device for processing optical data comprising: an optical waveguide formed on a substrate, a light source for the laser beam to be admitted into the waveguide, lens means provided on the waveguide for causing the beam propagating through the waveguide to emerge obliquely upward as separated into three beams and focusing the separated beams two-dimensionally at three different positions, and means for individually receiving the beams reflected obliquely from above.
Claim 12
Independent Claim
71 words
A device for processing optical data comprising: an optical waveguide formed on a substrate, a light source for the laser beam to be admitted into the waveguide, lens means provided on the waveguide for causing the beam propagating through the waveguide to emerge obliquely upward as separated into three beams and focusing the separated beams two-dimensionally at three different positions, and means for individually receiving the beams reflected obliquely from above.
Claim 13
Dependent Claim
24 words
A device as defined in claim 1 wherein the waveguide, the lens means and the light receiving means are provided on the same substrate.
Claim 14
Dependent Claim
28 words
A device as defined in claim 10 comprising: forcusing adjusting means for the three beams emerging obliquely upward, tracking adjusting means for the three beams emerging obliquely upward.
Claim 15
Dependent Claim
67 words
A device as defined in claim 12 wherein the laser light source, the substrate and the light receiving means are provided on a single.base, the forcusing adjusting means is a mechanism for moving the base in a direction perpendicular to the plane of the base, and the tracking adjusting means is a mechanism for moving the base in a direction parallel to the plane of the base.
Claim 16
Dependent Claim
38 words
A device as defined in claim 12 wherein the lens means is formed on the portion of the substrate having an electrooptical effect, and at least one of focusing adjustment and tracking adjustment is done utilizing the effect.
Claim 17
Dependent Claim
37 words
A device as defined in claim 12 wherein the waveguide is formed on the portion of the substrate having an electrooptical effect, which is utilized to change the direction of propagation of the beam for tracking adjustment.
Claim 18
Independent Claim
92 words
A device for processing optical data comprising: an optical waveguide formed on a substrate, a light source for the laser beam to be admitted into the waveguide, lens means provided on the waveguide for causing the beam propagating through the waveguide to emerge obliquely upward and focusing the emergent beam two-dimensionally,and means for receiving the beam reflected obliquely from above, the lens means being formed on the portion of the substrate having an electrooptical effect and includes a plurality of electrodes controllable by the light receiving signal from the light receiving means.
Claim 19
Independent Claim
92 words
A device for processing optical data comprising: an optical waveguide formed on a substrate, a light source for the laser beam to be admitted into the waveguide, lens means provided on the waveguide for causing the beam propagating through the waveguide to emerge obliquely upward and focusing the emergent beam two-dimensionally,and means for receiving the beam reflected obliquely from above, the lens means being formed on the portion of the substrate having an electrooptical effect and includes a plurality of electrodes controllable by the light receiving signal from the light receiving means.
Claim 20
Dependent Claim
24 words
A device as defined in claim 16 wherein the waveguide, the lens means and the light receiving means are provided on the same substrate.
Claim 21
Dependent Claim
35 words
A device as defined in claim 16 wherein signals for controlling the voltage to be applied to the electrodes constituting the lens means are a tracking error detection signal and a focusing error detection signal.
Claim 22
Dependent Claim
39 words
19 . A device as defined in claim 16 wherein the lens means causes the beam propagating through the waveguide to emerge obliquely upward as separated into three beams and focus the separated beams two-dimensionally at three different positions.
References Cited (Backward Citations)
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