Global Patent Index - EP 0983522 A1

EP 0983522 A1 2000-03-08 - ULTRAVIOLET LIGHT ILLUMINATION AND VIEWING SYSTEM AND METHOD FOR FLUORESCENT DYE LEAK DETECTION

Title (en)

ULTRAVIOLET LIGHT ILLUMINATION AND VIEWING SYSTEM AND METHOD FOR FLUORESCENT DYE LEAK DETECTION

Title (de)

ULTRAVIOLET-LICHT-BELEUCHTUNGS- UND BETRACHTUNGSSYSTEM UND VERFAHREN ZUR DETEKTION VON LECKAGEN VON FLUORESZENZFARBSTOFF

Title (fr)

SYSTEME D'ECLAIRAGE ET DE MISE EN EVIDENCE EN ULTRAVIOLET ET PROCEDE DE DETECTION DE FUITES PAR COLORANT FLUORESCENT

Publication

EP 0983522 A1 (EN)

Application

EP 97947315 A

Priority

  • US 9719841 W
  • US 3009296 P

Abstract (en)

[origin: WO9820365A1] An illumination and viewing system and method for detecting leaks by observing material (26) caused to fluoresce by being illuminated by a beam of ultraviolet light. The beam is concentrated by a parabolic reflector (10) coated to maximize ultraviolet reflection, and then passed through a filter (20) which reflects visible wavelengths while allowing transmission of ultraviolet and IR wavelengths. The fluorescing light is viewed through eyeglasses (24) which block wavelengths just below the wavelengths of the emitted fluorescing light.

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

G01T 1/161; G01N 21/64

IPC 8 full level (invention and additional information)

G01M 3/20 (2006.01); B01J 19/12 (2006.01); G01N 21/64 (2006.01); G01N 21/91 (2006.01)

CPC (invention and additional information)

G01N 21/6447 (2013.01); G01N 21/91 (2013.01)

Designated contracting state (EPC)

DE FR GB NL

EPO simple patent family

WO 9820365 A1 19980514; AU 5242998 A 19980529; EP 0983522 A1 20000308; EP 0983522 A4 20000308; JP 2001505122 A 20010417; JP 3434518 B2 20030811

INPADOC legal status


2001-02-21 [18W] WITHDRAWN

- Date of withdrawal: 20001221

2000-03-08 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990820

2000-03-08 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20000113

2000-03-08 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB NL

2000-03-08 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): DE FR GB NL