Editing Sunglasses (section)

=== Modern developments ===
[[Jean-Marie-Théodore Fieuzal]] (1836–1888) was the first to argue for UV protection with (yellow) shaded glasses, and by 1899, [[Rodenstock GmbH]] produced possibly the first sunglasses intended for shielding eyes from UV light and not just [[Glare (vision)|glare]].<ref name="Rodenstock">{{cite web | title=History | website=Rodenstock B2C | date=2014-07-28 | url=https://www.rodenstock.at/at14/de/unternehmen/ueber-rodenstock/history.html | language=de | access-date=2021-08-07}}</ref>

In 1913, [[William Crookes#Crookes sunglass lenses|Crookes lenses]]<ref>{{Cite web|url=http://museyeum.org/detail.php?name_title=Crookes&module=objects&type=advanced&kv=7151&record=18|title=The College of Optometrists|website=museyeum.org|access-date=Jun 24, 2020}}</ref> were introduced,<ref>{{Cite web|url=http://museyeum.org/detail.php?name_title=Crookes&module=objects&type=advanced&kv=20397&record=21&module=objects|title=The College of Optometrists|website=museyeum.org|access-date=Jun 24, 2020}}</ref> made from glass containing [[cerium]], which completely blocked ultraviolet light.<ref>{{Cite web|url=http://museyeum.org/results.php?name_title=Crookes&op-earliest_year==&op-latest_year==&module=objects&type=advanced|title=The College of Optometrists|website=museyeum.org|access-date=Jun 24, 2020}}</ref><ref>{{Cite web|url=https://www.collinsdictionary.com/dictionary/english/crookes-lens|title=Crookes lens definition and meaning &#124; Collins English Dictionary|website=www.collinsdictionary.com|access-date=Jun 24, 2020}}</ref> In the [[Roaring Twenties|early 1920s]], the use of sunglasses started to become more widespread, especially among movie stars. <!-- It is commonly believed that this was to avoid recognition by fans, but an alternative reason sometimes given is that they often had red eyes from the powerful [[arc lamp]]s that were needed due to the extremely slow speed film stocks used.{{Citation needed|date=January 2009}} The stereotype persisted long after improvements in film quality and the introduction of [[ultraviolet]] filters had eliminated this problem. --> Inexpensive mass-produced sunglasses made from [[celluloid]] were first produced by [[Foster Grant|Sam Foster]] in 1929. Foster found a ready market on the [[beach]]es of [[Atlantic City, New Jersey]] where he began selling sunglasses under the name [[Foster Grant]] from a [[F. W. Woolworth Company|Woolworth]] on the [[boardwalk (entertainment district)#Atlantic City|Boardwalk]].<ref>{{cite web |url=http://www.articlesurfing.org/arts_and_crafts/the_history_of_sunglasses.html |title=The History Of Sunglasses |access-date=2012-05-01 |url-status=live |archive-url=https://web.archive.org/web/20120701000808/http://www.articlesurfing.org/arts_and_crafts/the_history_of_sunglasses.html |archive-date=2012-07-01 }}</ref> By 1938, ''[[Life (magazine)|Life]]'' magazine wrote of how sunglasses were a "new fad for wear on city streets ... a favorite affectation of thousands of women all over the U.S." It stated that 20 million sunglasses were sold in the United States in 1937 but estimated that only about 25% of American wearers needed them to protect their eyes.<ref name="life19380530">{{cite magazine | url=https://books.google.com/books?id=3EoEAAAAMBAJ&pg=PA31 | title=Dark Glasses are New Fad for Wear on City Streets | magazine=[[Life (magazine)|Life]] | date=1938-05-30 | access-date=2 July 2013 | pages=31–33 | url-status=live | archive-url=https://web.archive.org/web/20131231153256/http://books.google.com/books?id=3EoEAAAAMBAJ&lpg=PP1&pg=PA31#v=onepage&f=true | archive-date=31 December 2013 }}</ref> At the same time, sunglasses started to be used as aids for pilots and even produced for the gaining aviation sector, eventually adding to sunglasses as cultural icons and to their popularity. [[Polarizer|Polarized]] sunglasses first became available in 1936 when [[Edwin H. Land]] began experimenting with making lenses with his patented [[Polaroid (polarizer)|Polaroid]] filter. In 1947, the Armorlite Company began producing lenses with CR-39 resin.<ref>{{Cite web | url=http://www.ppgoptical.com/getmedia/47e39594-6472-48e7-8e2c-8f48015284c8/CR39_50years_booklet.pdf | title=More Than Meets the Eye | archive-url=https://web.archive.org/web/20240408120504/http://www.ppgoptical.com/getmedia/47e39594-6472-48e7-8e2c-8f48015284c8/CR39_50years_booklet.pdf | archive-date=2024-04-08}}</ref>

As of 2008, [[Xiamen]], [[China]], was the world's largest producer of sunglasses with [[Port of Xiamen|its port]] exporting 120 million pairs each year.<ref>{{cite web  |title=China Expat city Guide Xiamen  |url=http://www.chinaexpat.com/article/2007/03/15/travel/chinas-50-best-websites-after-china-expat-course.html  |publisher=China Expat  |year=2008  |access-date=8 February 2009  |url-status=live  |archive-url=https://web.archive.org/web/20090124030851/http://chinaexpat.com/article/2007/03/15/travel/chinas-50-best-websites-after-china-expat-course.html  |archive-date=24 January 2009  }}</ref>