Global Patent Index - EP 0988575 A1

EP 0988575 A1 2000-03-29 - ACOUSTO-OPTIC MODULATOR ARRAY WITH REDUCED RF CROSSTALK

Title (en)

ACOUSTO-OPTIC MODULATOR ARRAY WITH REDUCED RF CROSSTALK

Title (de)

AKUSTOOPTISCHE MODULATORFELD MIT VERBESSERTER HOCHFREQUENZÜBERSPRECHDÄMPFUNG

Title (fr)

RESEAU MODULATEUR ACOUSTO-OPTIQUE PRESENTANT UNE DIAPHONIE RF REDUITE

Publication

EP 0988575 A1 (EN)

Application

EP 98930258 A

Priority

  • US 9812463 W
  • US 5197397 P
  • US 9232198 A

Abstract (en)

[origin: WO9903016A1] The electrical (RF) crosstalk in multi-channel laser beam systems using an acousticoptic modulator is minimized. This is done without reducing packing density by arranging the modulator electrodes (44a, .., 44h) in a two dimensional array. The electrodes in each column are staggered relative to the electrodes in adjacent columns. While this introduces a problem of potential gaps between the resulting laser beam spots, this gap is corrected by a beam translation device (50) located in the optical path of certain of the laser beams.

IPC 1-7 (main, further and additional classification)

G02F 1/11

IPC 8 full level (invention and additional information)

G02F 1/11 (2006.01); G02F 1/33 (2006.01)

CPC (invention and additional information)

G02F 1/332 (2013.01); G02F 1/11 (2013.01)

Citation (search report)

See references of WO 9903016A1

Designated contracting state (EPC)

DE GB NL SE

EPO simple patent family

WO 9903016 A1 19990121; CA 2296278 A1 19990121; EP 0988575 A1 20000329; IL 133749 D0 20010430; JP 2002508088 A 20020312; KR 20010014272 A 20010226

INPADOC legal status


2002-10-09 [18R] REFUSED

- Effective date: 20020518

2000-06-28 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20000512

2000-03-29 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991220

2000-03-29 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE GB NL SE