EP 3737887 A4 20210106 - APPARATUS AND METHOD FOR PROTECTING THE OPTICAL SYSTEM OF A LIGHT FIXTURE
Title (en)
APPARATUS AND METHOD FOR PROTECTING THE OPTICAL SYSTEM OF A LIGHT FIXTURE
Title (de)
VORRICHTUNG UND VERFAHREN ZUM SCHUTZ DES OPTISCHEN SYSTEMS EINER LEUCHTE
Title (fr)
APPAREIL ET PROCÉDÉ PERMETTANT DE PROTÉGER UN SYSTÈME OPTIQUE D'UN APPAREIL D'ÉCLAIRAGE
Publication
Application
Priority
US 2019024843 W 20190329
Abstract (en)
[origin: WO2020204878A1] An apparatus and method for covering the optical system of a moving head light fixture with a filter or diffuser when the lighting fixture is turned off is provided. The filter or diffuser is positioned in the optical path between a lighting element and a lens. A retraction device is energized to retract the filter or diffuser from the optical path during normal operation. Upon removal of power to the fixture, the filter mechanism automatically returns the filter or diffuser to its position in the optical path. In this way, the optical system of the fixture can be protected from damage caused by impinging strong light and/or sunlight when the fixture is not in use.
IPC 8 full level
F21V 1/00 (2006.01); F21S 10/00 (2006.01); F21V 15/00 (2015.01); F21V 21/15 (2006.01); F21V 21/30 (2006.01); F21V 11/18 (2006.01); F21V 23/04 (2006.01); F21W 131/406 (2006.01); F21Y 115/10 (2016.01)
CPC (source: EP)
F21V 15/00 (2013.01); F21V 21/30 (2013.01); F21V 11/18 (2013.01); F21V 21/15 (2013.01); F21V 23/0457 (2013.01); F21W 2131/406 (2013.01); F21Y 2115/10 (2016.07)
Citation (search report)
- [XYI] US 2015308655 A1 20151029 - HOLMES FRED H [US], et al
- [XY] CN 107559612 A 20180109 - DONGGUAN WENYU IND CO LTD
- [XY] EP 2597357 A1 20130529 - VALEO VISION [FR]
- [X] US 2015092422 A1 20150402 - JURIK PAVEL [CZ], et al
- [E] WO 2020143369 A1 20200716 - GUANGZHOU HAOYANG ELECTRONICS CO LTD [CN]
- [A] US 5887970 A 19990330 - PAYNE STEPHEN C [US]
- See references of WO 2020204878A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020204878 A1 20201008; CA 3076110 A1 20200929; CA 3076110 C 20210713; CN 112020624 A 20201201; EP 3737887 A1 20201118; EP 3737887 A4 20210106; EP 3737887 B1 20221026; JP 2021513718 A 20210527; JP 6951564 B2 20211020; SG 11202002474P A 20201127
DOCDB simple family (application)
US 2019024843 W 20190329; CA 3076110 A 20190329; CN 201980006509 A 20190329; EP 19914178 A 20190329; JP 2020517562 A 20190329; SG 11202002474P A 20190329