Global Patent Index - EP 1049654 A1

EP 1049654 A1 2000-11-08 - OPTICAL COMPONENT MADE OF SILICA GLASS AND METHOD FOR THE PRODUCTION THEREOF

Title (en)

OPTICAL COMPONENT MADE OF SILICA GLASS AND METHOD FOR THE PRODUCTION THEREOF

Title (de)

OPTISCHES BAUTEIL AUS QUARZGLAS UND VERFAHREN FÜR SEINE HERSTELLUNG

Title (fr)

COMPOSANT OPTIQUE EN VERRE QUARTZEUX ET SON PROCEDE DE PRODUCTION

Publication

EP 1049654 A1 (DE)

Application

EP 99969079 A

Priority

  • DE 19841932 A
  • EP 9903342 W

Abstract (en)

[origin: DE19841932A1] An UV transmitting optical component consists of a flame hydrolysis deposited and directly vitrified quartz glass of extremely low hydrogen content. An optical component for transmitting UV radiation of <= 250 nm wavelength consists of quartz glass formed by direct vitrification of fine grained SiO2 deposited on a substrate by flame hydrolysis of a chlorine-free silicon compound. The quartz glass has a hydrogen content of less than 5\*10<16> molecules/cm<3>. An Independent claim is also included for production of the above optical component, the quartz glass being subjected to a hydrogen content reduction treatment. Preferred Features: The hydrogen content reduction treatment comprises treatment in vacuum and/or a chemically reactive atmosphere.

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

C03C 3/06; C03B 19/14

IPC 8 full level (invention and additional information)

C03B 20/00 (2006.01); C03B 8/04 (2006.01); C03B 19/14 (2006.01); C03C 3/06 (2006.01); C03C 4/00 (2006.01)

CPC (invention and additional information)

C03C 3/06 (2013.01); C03B 19/1453 (2013.01); C03C 4/0085 (2013.01); C03B 2201/21 (2013.01); C03B 2201/23 (2013.01); C03B 2207/32 (2013.01); C03C 2201/21 (2013.01); C03C 2201/23 (2013.01); C03C 2203/40 (2013.01)

Citation (search report)

See references of WO 0015570A1

Designated contracting state (EPC)

DE FR GB NL

EPO simple patent family

DE 19841932 A1 20000316; EP 1049654 A1 20001108; JP 2002524382 A 20020806; WO 0015570 A1 20000323

INPADOC legal status


2002-04-17 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20020227

2001-12-12 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20011024

2000-11-08 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000830

2000-11-08 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB NL