Global patent index - EP 1055151 A2

EP 1055151 A2 2000-11-29 - REAR PROJECTION SCREEN AND METHODS OF MANUFACTURE THEREOF

Title (en)

REAR PROJECTION SCREEN AND METHODS OF MANUFACTURE THEREOF

Title (de)

RÜCKPROJEKTIONS-BILDWAND UND VERFAHREN ZU IHRER HERSTELLUNG

Title (fr)

ECRAN DE RETROPROJECTION ET PROCEDES DE FABRICATION

Publication

EP 1055151 A2 (EN)

Application

EP 99900576 A

Priority

  • GB 9900085 W
  • GB 9800668 A

Abstract (en)

[origin: WO9936830A2] Various techniques are disclosed for forming light diffusing or projection screens, comprising printing a transparent substrate. In preferred techniques, resin forming microlenses (12) are deposited on one side of a transparent substrate (10) and an opaque material (14) is deposited on the opposite side so as to cover the areas between lenses (12). In one technique, the substrate is printed with a pattern corresponding to the desired locations of the lenses, in a material wettable by a polymerisable monomer, whilst the substrate is non-wettable by the monomer, or the interstices between desired lens locations are printed in a non-wettable material (the substrate being wettable) and the substrate so printed is coated with the fluid monomer, which adheres preferentially to the wettable regions to form droplets or beads which are subsequently cured to form microlenses. In another technique, (Figure 6), successive layers of fusible transparent toner are deposited on the substrate electrographically. In yet another technique, transparent droplets are "printed" on the substrate (12) by means similar to an "ink-jet" printer.

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

G03B 21/62; G02B 3/00

IPC 8 full level (invention and additional information)

G02B 3/00 (2006.01); G03B 21/62 (2006.01)

CPC (invention and additional information)

G02B 3/0018 (2013.01); G03B 21/625 (2013.01); G02B 3/0043 (2013.01); G02B 3/005 (2013.01); G02B 3/0056 (2013.01)

Citation (search report)

See references of WO 9936830A3

Designated contracting state (EPC)

DE FR GB IT NL

EPO simple patent family

WO 9936830 A2 19990722; WO 9936830 A3 19990930; EP 1055151 A2 20001129; GB 9800668 D0 19980311

INPADOC legal status

2003-02-05 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020801

2000-11-29 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000616

2000-11-29 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB IT NL