Global Patent Index - EP 1007881 A1

EP 1007881 A1 2000-06-14 - BACKGROUND LIGHTING

Title (en)

BACKGROUND LIGHTING

Title (de)

HINTERGRUNDBELEUCHTUNG

Title (fr)

ECLAIRAGE D'ARRIERE-PLAN

Publication

EP 1007881 A1 (DE)

Application

EP 98943824 A

Priority

  • DE 19736879 A
  • EP 9804827 W

Abstract (en)

[origin: DE19736879A1] To have a background lighting for objects (24) which are translucid and thus at least partly bright, including for liquid crystal displays (24) on electronic glasses (12), it is necessary that the surface of said object be bright in as homogeneous a manner as possible in case of a high luminous intensity. This aim can be reached with the invention due to the fact that the light source (34) is of a substantially elongated and linear shape and that its radially irradiated light beams (50) are deflected by a mirror (38) designed as a simply incurvate parabolic surface. Whereas the light source (43) is approximately on the caustic line (42) of the mirror (38), the radially and equiangularly irradiated light beams (50) are reflected by said mirror (38) into parallel and equispaced beams (54).

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

F21S 3/02; F21V 7/06; G02C 7/10; F21V 7/12

IPC 8 full level (invention and additional information)

G02B 27/00 (2006.01); G02B 27/01 (2006.01); G02F 1/13357 (2006.01)

CPC (invention and additional information)

G02B 27/0172 (2013.01); G02F 1/133615 (2013.01); G02B 2027/0178 (2013.01); G02F 1/133605 (2013.01)

Citation (search report)

See references of WO 9910679A1

Designated contracting state (EPC)

AT CH DE LI

EPO simple patent family

DE 19736879 A1 19990311; DE 19736879 C2 19990729; EP 1007881 A1 20000614; WO 9910679 A1 19990304

INPADOC legal status


2003-05-28 [18R] REFUSED

- Effective date: 20021227

2002-08-14 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020628

2000-06-14 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000212

2000-06-14 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT CH DE LI