Editing Halogen lamp (section)

==History==
A carbon filament lamp using [[chlorine]] to prevent darkening of the envelope was patented<ref>{{Cite patent|country=US|number=254780|title=Electric incandescent lamp|pubdate=1882-03-07|assign=United States Electric Lighting Co.
|inventor1-last=Scribner|inventor1-first=Edward A.}}</ref> by Edward Scribner of the [[United States Electric Lighting Company|US Electric Lighting Co.]] in 1882, and chlorine-filled "NoVak" lamps were marketed in 1892.<ref>{{cite journal|url= https://ieeexplore.ieee.org/document/959111 |last=Furfari |first=F.A. |title=A different kind of chemistry: A history of tungsten halogen lamps |doi=10.1109/2943.959111 |journal=IEEE Industry Applications Magazine |page=11 |volume=7 |issue=6 |date= 2001|url-access=subscription }}</ref>

The use of iodine was proposed in a 1933 patent,<ref name="US Patent 2883571">{{Cite patent|country=US|number=2883571|title=Electric incandescent lamp|pubdate=1959-04-21|assign=[[General Electric Co.]]|inventor1-last=Fridrich
|inventor1-first=Elmer G.|inventor2-last=Wiley|inventor2-first= Emmett H.}}</ref> which also described the cyclic redeposition of tungsten back onto the filament. In 1959, [[General Electric]] patented<ref name="US Patent 2883571"/> a practical lamp using iodine.<ref>{{cite book |last1=Kane |first1=Raymond |last2=Sell |first2=Heinz |title=Revolution in lamps : a chronicle of 50 years of progress |date=2001 |publisher=Fairmont Press |location=Lilburn, GA |isbn=9780881733785 |edition=Second}}</ref>

===Phase-out===
In 2009, the [[European Union|EU]] and other [[European countries]] began a [[Phase-out of incandescent light bulbs#European Union|phase-out of inefficient bulbs]]. The production and importation of directional mains-voltage halogen bulbs was banned on 1 September 2016 and non-directional halogen bulbs followed on 1 September 2018.<ref>{{cite web|url=https://www.lyco.co.uk/advice/the-light-bulb-phase-out-schedule/|title=The light bulb phase out schedule / Lighting Advice - Lyco|website=www.lyco.co.uk|access-date=30 April 2018|url-status=dead|archive-url=https://web.archive.org/web/20171027025028/https://www.lyco.co.uk/advice/the-light-bulb-phase-out-schedule/|archive-date=27 October 2017}}</ref> [[Australia]] banned some halogen light bulbs above 10W from September 2021 in favour of eco-halogen bulbs,<ref>{{cite web |url=https://www.lightingcouncil.com.au/wp-content/uploads/2020/03/200210-halogen-phase-out_FINAL1.pdf |title=HALOGEN LAMP (GLOBE) PHASE-OUT IN AUSTRALIA |last=Crossley |first=David |date=February 2020 |website=lightingcouncil.com.au |publisher=Lighting Council Australia |access-date=2023-10-02}}</ref> later than the planned date of September 2020<ref>{{cite web|title=Halogen Bulbs to be Banned in the EU Market from September - LEDinside|url= https://www.ledinside.com/news/2018/8/halogen_bulbs_to_be_banned_in_the_eu_market_from_september |access-date=26 August 2018|website=www.ledinside.com}}</ref> to keep the policy in line with the European Union.<ref>{{Cite web|last=Carabott|first=Mike|date=2020-05-26|title=Halogen lamps phase-out in Australia pushed back to late 2021|url= https://www.leadingedgeenergy.com.au/news/halogen-lamps-ban-in-australia-moved-to-late-2021/ |access-date=2021-03-09|website=Leading Edge Energy|language=en-AU}}</ref> In June 2021, the [[United Kingdom|UK]] government also announced plans to end the sale of halogen light bulbs from September, as part of the UK's wider efforts to tackle [[climate change]].<ref>{{Cite web|date=2021-06-09|title=End of halogen light bulbs spells brighter and cleaner future|url= https://www.gov.uk/government/news/end-of-halogen-light-bulbs-spells-brighter-and-cleaner-future |access-date=2021-06-09|website=gov.uk}}</ref>