EP 1962115 A9 20081126 - Optical multi-layer filter with periodical variation of the high and low refractive index and optical instrument
Title (en)
Optical multi-layer filter with periodical variation of the high and low refractive index and optical instrument
Title (de)
Optische mehrschichtige Filter mit periodischer Variation des hohen und niedrigen optischen Brechungsindex und optisches Instrument
Title (fr)
Filtre optique à plusieurs couches, avec variation périodique d'indice de réfraction éleve/faible et élément d'optique
Publication
Application
Priority
- EP 04019510 A 20040817
- JP 2003299224 A 20030822
- JP 2003299225 A 20030822
- JP 2003299226 A 20030822
- JP 2003354027 A 20031014
Abstract (en)
[origin: EP1508822A2] In an optical filter, a thin film is formed by laminating low refractive index layers alternatingly from a substrate side with high refractive index layers. The thin film is provided with first, second, and third laminated portions. In the first laminated portion, the refractive indices of the high refractive index layers become gradually higher. In the second laminated portion, the refractive indices of the high refractive index layers are substantially equal to the highest refractive index of the high refractive index layers constituting the first laminated portion. In the third laminated portion, the refractive indices of the high refractive index layers become gradually lower, and the refractive indices of the low refractive index layers are substantially equal to the lowest refractive index of the low refractive index layers constituting the second laminated portion. The low refractive index layers of the first and second laminated portions have a low refractive index layer uniform portion or a low refractive index layer decreasing portion. <IMAGE>
IPC 8 full level
G02B 5/20 (2006.01); G02B 5/22 (2006.01); G02B 5/28 (2006.01); G02B 21/16 (2006.01)
CPC (source: EP US)
G02B 5/208 (2013.01 - EP US); G02B 5/22 (2013.01 - EP US); G02B 5/223 (2013.01 - EP US); G02B 5/285 (2013.01 - EP US); G02B 21/16 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1508822 A2 20050223; EP 1508822 A3 20050525; EP 1508822 B1 20080702; CN 1282882 C 20061101; CN 1584635 A 20050223; DE 602004014687 D1 20080814; EP 1956399 A2 20080813; EP 1956399 A3 20080903; EP 1956400 A2 20080813; EP 1956400 A3 20080903; EP 1962112 A2 20080827; EP 1962112 A3 20080903; EP 1962112 A9 20081126; EP 1962113 A2 20080827; EP 1962113 A3 20080903; EP 1962113 A9 20081126; EP 1962114 A2 20080827; EP 1962114 A3 20080903; EP 1962114 A9 20081210; EP 1962115 A2 20080827; EP 1962115 A3 20080903; EP 1962115 A9 20081126; EP 1962116 A2 20080827; EP 1962116 A3 20080903; EP 1962117 A2 20080827; EP 1962117 A3 20080903; EP 1962117 A9 20081210; EP 1980879 A2 20081015; EP 1980879 A3 20081029; EP 1980880 A2 20081015; EP 1980880 A3 20081029; US 2005041293 A1 20050224; US 2007095958 A1 20070503; US 2007103784 A1 20070510; US 2007103785 A1 20070510; US 2007109645 A1 20070517; US 2007109646 A1 20070517; US 2007109647 A1 20070517; US 2007109648 A1 20070517; US 2007263287 A1 20071115; US 7193780 B2 20070320; US 7265905 B2 20070904; US 7271959 B2 20070918; US 7274512 B2 20070925; US 7277228 B2 20071002; US 7289268 B2 20071030; US 7312925 B2 20071225; US 7324283 B2 20080129; US 7369314 B2 20080506
DOCDB simple family (application)
EP 04019510 A 20040817; CN 200410058250 A 20040820; DE 602004014687 T 20040817; EP 08005184 A 20040817; EP 08005185 A 20040817; EP 08005186 A 20040817; EP 08005187 A 20040817; EP 08005188 A 20040817; EP 08005189 A 20040817; EP 08005190 A 20040817; EP 08005191 A 20040817; EP 08005192 A 20040817; EP 08005193 A 20040817; US 64590406 A 20061226; US 64691606 A 20061227; US 64693106 A 20061227; US 64696906 A 20061227; US 64766706 A 20061228; US 64846106 A 20061228; US 64893007 A 20070102; US 64904507 A 20070102; US 91747904 A 20040813