Global Patent Index - EP 1006221 A1

EP 1006221 A1 2000-06-07 - Optically functional minute structure and woven fabric with such structure

Title (en)

Optically functional minute structure and woven fabric with such structure

Title (de)

Winzige Strukturen mit optischer Funktion und Gewebe mit solchen Strukturen

Title (fr)

Structures minuscules à fonction optique et tissu avec de telles structures

Publication

EP 1006221 A1 (EN)

Application

EP 99124235 A

Priority

JP 34534398 A

Abstract (en)

A minute structure has at least one of optical functions including a reflection/interference function to visible light ray, a reflection function to infrared ray and a reflection function to ultraviolet ray. The minute structure comprises a plurality of first and second polymer layers which are alternately put on one another in the direction of the thickness to constitute a layer unit, each first polymer layer having an optical refractive index "na" and a thickness "da", and each second polymer layer having an optical refractive index "nb" and a thickness "db". The minute structure is formed to satisfy the following condition: under the conditions of "1.3 na" and "1.01 nb/na 1.40", the peak wavelength " lambda 1" of primary reflection satisfies the following formula: <MATH> the ratio "nb.db/na.da" of the optical thickness "nb.db" of the second polymer layer to that "na.da" of the first polymer layer satisfies the following formula: <MATH> <IMAGE>

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

D01F 8/04; D01F 8/06; D01F 8/12; D01F 8/14; D03D 1/00

IPC 8 full level (invention and additional information)

B32B 7/02 (2006.01); C09D 5/00 (2006.01); D01D 5/32 (2006.01); D01F 8/04 (2006.01); D01F 8/06 (2006.01); D01F 8/12 (2006.01); D01F 8/14 (2006.01); D03D 15/00 (2006.01)

CPC (invention and additional information)

D01F 8/14 (2013.01); D01F 8/04 (2013.01); D01F 8/06 (2013.01); D01F 8/12 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

EP 1006221 A1 20000607; JP 2000170028 A 20000620

INPADOC legal status


2002-11-20 [18W] WITHDRAWN

- Date of withdrawal: 20020930

2001-02-21 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: DE FR GB IT

2000-06-07 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991203

2000-06-07 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT

2000-06-07 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI