Global Patent Index - EP 0976000 A1

EP 0976000 A1 20000202 - OVERLOAD PROTECTION SYSTEM FOR AVOIDING DAMAGE TO OPTICAL COMPONENTS

Title (en)

OVERLOAD PROTECTION SYSTEM FOR AVOIDING DAMAGE TO OPTICAL COMPONENTS

Title (de)

ÜBERLASTSCHUTZ ZUR VERMEIDUNG EINER BESCHÄDIGUNG OPTISCHER KOMPONENTEN

Title (fr)

SYSTEME DE PROTECTION CONTRE LES SURCHARGES POUR EVITER D'EVENTUELLES ALTERATIONS DE COMPOSANTS OPTIQUES

Publication

EP 0976000 A1 20000202 (DE)

Application

EP 99910142 A 19990218

Priority

  • DE 9900452 W 19990218
  • DE 19806866 A 19980219

Abstract (en)

[origin: WO9942878A1] The invention relates to an overload protection system for avoiding damage to optical components (3) caused by an excessive light output of a light source (2) and especially for protecting a glass fibre system used to transmit laser light (5). Said system comprises an outcoupling device (4) positioned in the optical path (6) between the light source (2) and the optical component (3) for coupling out a small fraction of the light, a detector (7) for detecting the light intensity of the outcoupled light, an electronic evaluation unit (8) for comparing the detected light intensity with a predefinable maximum value and a device (9) for reducing the light output or switching off the light incident on the optical component (3) if the maximum value is exceeded.

IPC 1-7

G02B 6/42

IPC 8 full level

G02B 6/42 (2006.01)

CPC (source: EP)

G02B 6/4296 (2013.01); G02B 2006/4297 (2013.01)

Citation (search report)

See references of WO 9942878A1

Designated contracting state (EPC)

CH DE FR GB LI

DOCDB simple family (publication)

WO 9942878 A1 19990826; DE 19906769 A1 19991216; EP 0976000 A1 20000202; JP 2001520766 A 20011030; JP 4396997 B2 20100113; US 6421475 B1 20020716

DOCDB simple family (application)

DE 9900452 W 19990218; DE 19906769 A 19990217; EP 99910142 A 19990218; JP 54197999 A 19990218; US 40234099 A 19991005