US4425024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planar electro-optical light deflector for several beam positions
Assignee: Siemens AG
•
Filing: 1981-05-29
•
Granted: 1984-01-10
•
Expires: 2001-05-29
Abstract
Abstract A planar electro-optical light deflector is operable to provide a plurality of beam positions and is characterized in that the same is a Bragg deflector having several adjacently-disposed electrode structures which are separately activatable, have respective different grid constants and are disposed on a layer waveguide inclined in such a manner that the light impinges on the respective electrode structures under respective Bragg angles, whereby the layer waveguide is capable of excitation over a width which corresponds to the totality of all electrode structures.
Inventors
- 👤 Rudolf Keil
- 👤 Franz Auracher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:13
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/29; G02F1/295; G02F1/2955
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
108 words
A planar electro-optical light deflector for deflecting an incident light beam to a plurality of beam positions, comprising: an optical layer waveguide for receiving an incident light beam; and a plurality of separately activatable electrode structures on said waveguide for producing deflection grids, said electrode structures being adjacently-disposed across the direction of beam incidence, said electrode structures having respective different grid constants and disposed at respective inclinations on said waveguide so that the incident light beam impinges at the respective Bragg angles, whereby said layer waveguide is capable of receiving incident light over a width which corresponds to that of the totality of said plurality of electrode structures.
Claim 2
Dependent Claim
108 words
A planar electro-optical light deflector for deflecting an incident light beam to a plurality of beam positions, comprising: an optical layer waveguide for receiving an incident light beam; and a plurality of separately activatable electrode structures on said waveguide for producing deflection grids, said electrode structures being adjacently-disposed across the direction of beam incidence, said electrode structures having respective different grid constants and disposed at respective inclinations on said waveguide so that the incident light beam impinges at the respective Bragg angles, whereby said layer waveguide is capable of receiving incident light over a width which corresponds to that of the totality of said plurality of electrode structures.
Claim 3
Dependent Claim
24 words
The light deflector of claim 1, wherein: each electrode structure includes a width which represents the desired light intensity of its respective deflected beam.
Claim 4
Dependent Claim
30 words
The light deflector of claim 1, wherein: each electrode structure comprises means responsive to the magnitude of voltage applied thereto to control the light intensity of its respective deflected beam.
Claim 5
Dependent Claim
82 words
A planar electro-optical light deflector for deflecting an incident light beam to a plurality of beam positions, comprising: an optical layer waveguide for receiving an incident light beam; a fixed grid structure in said waveguide for dividing the incident light beam into a plurality of component beams; and a plurality of electro-optical deflectors for the respective component beams, each electro-optical deflector comprising a separately activatable electrode structure, said electrode structures disposed adjacent one another across the waveguide and inclined at respective angles.
Claim 6
Dependent Claim
82 words
A planar electro-optical light deflector for deflecting an incident light beam to a plurality of beam positions, comprising: an optical layer waveguide for receiving an incident light beam; a fixed grid structure in said waveguide for dividing the incident light beam into a plurality of component beams; and a plurality of electro-optical deflectors for the respective component beams, each electro-optical deflector comprising a separately activatable electrode structure, said electrode structures disposed adjacent one another across the waveguide and inclined at respective angles.
Claim 7
Dependent Claim
13 words
The light deflector of claim 4, wherein: said light deflectors are Bragg deflectors.
Claim 8
Dependent Claim
13 words
The light deflector of claim 4, wherein: said light deflectors are prism deflectors.
Claim 9
Dependent Claim
28 words
The light deflector of claim 4, wherein: each of said deflectors comprises means responsive to a voltage applied to its electrode structure to modulate the respective component beam.
Claim 10
Dependent Claim
28 words
The light deflector of claim 4, wherein: each of said deflectors comprises means responsive to a voltage applied to its electrode structure to switch the respective component beam.
Claim 11
Dependent Claim
26 words
The light deflector of claim 4, wherein: said fixed grid structure comprises means for at least partially determining the relative light intensities of the component beams.
Claim 12
Dependent Claim
121 words
An optical printing device, comprising: a laser for generating a light beam; and a planar electro-optical light deflector for deflecting an incident light beam to a plurality of printing positions, comprising: an optical layer waveguide for receiving an incident light beam; and a plurality of separately activatable electrode structures on said waveguide for producing deflection grids, said electrode structures being adjacently-disposed across the direction of beam incidence, said electrode structures having respective different grid constants and disposed at respective inclinations on said waveguide so that the incident light beam impinges at the respective Bragg angles, whereby said layer waveguide is capable of receiving incident light over a width which corresponds to that of the totality of said plurality of electrode structures.
Claim 13
Dependent Claim
121 words
An optical printing device, comprising: a laser for generating a light beam; and a planar electro-optical light deflector for deflecting an incident light beam to a plurality of printing positions, comprising: an optical layer waveguide for receiving an incident light beam; and a plurality of separately activatable electrode structures on said waveguide for producing deflection grids, said electrode structures being adjacently-disposed across the direction of beam incidence, said electrode structures having respective different grid constants and disposed at respective inclinations on said waveguide so that the incident light beam impinges at the respective Bragg angles, whereby said layer waveguide is capable of receiving incident light over a width which corresponds to that of the totality of said plurality of electrode structures.
References Cited (Backward Citations)
US4047795A
Cited
US4056304A
Cited
SU527973A1
Cited
SU528798A1
Cited
US4264125A
Cited
US4394060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-09 | 1987-07-11 | 1988-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-09 | 1991-07-11 | 1992-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-09 | 1995-07-11 | 1996-01-10 | $7700.00 | Window Closed / Lapsed |