EP 1214616 A1 20020619 - DUAL GRATING LIGHT FILTERING SYSTEM
Title (en)
DUAL GRATING LIGHT FILTERING SYSTEM
Title (de)
SYSTEM ZUR LICHTFILTERUNG MIT ZWEI GITTERN
Title (fr)
SYSTEME DE FILTRAGE DE LA LUMIERE A RESEAU DE DIFFRACTION DOUBLE
Publication
Application
Priority
- US 0023488 W 20000826
- US 15391399 P 19990914
- US 53841100 A 20000328
Abstract (en)
[origin: WO0120381A1] A light filtering assembly comprises an input section, a filtering section, and an output section. The input section divides the input beam into a plurality of polarized monochromatic beamlets that travel along a corresponding plurality of spatially separated beam paths by means of a polarization converter and a diffraction grating. The polarized monochromatic beamlets comprise a plurality of desired beamlets corresponding to the desired wavelength components of the input beam. The filtering section passes the disered beamlets blocks the unwanted beamlets. The output section combines the desired beamlets so as to form the output beam. Because the beamlets are linearly polarized, the input and output section are able to realize a high throughput efficiency.
IPC 1-7
IPC 8 full level
G02B 5/18 (2006.01); G02B 6/293 (2006.01); G02B 6/34 (2006.01); G02B 27/28 (2006.01)
CPC (source: EP KR)
G02B 5/1814 (2013.01 - EP); G02B 6/272 (2013.01 - EP); G02B 6/2766 (2013.01 - EP); G02B 6/29307 (2013.01 - EP); G02B 6/29311 (2013.01 - EP); G02B 6/34 (2013.01 - KR); G02B 27/283 (2013.01 - EP)
Citation (search report)
See references of WO 0120381A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 0120381 A1 20010322; AU 7982600 A 20010417; CA 2385004 A1 20010322; CN 1390309 A 20030108; EP 1214616 A1 20020619; JP 2003509719 A 20030311; KR 20020033803 A 20020507
DOCDB simple family (application)
US 0023488 W 20000826; AU 7982600 A 20000826; CA 2385004 A 20000826; CN 00815628 A 20000826; EP 00970445 A 20000826; JP 2001523906 A 20000826; KR 20027003442 A 20020314