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Lumibrite (SrAl2O4 + Eu + Dy - Strontium aluminate doped with Europium and Dysprosium) also known as LumiBrite is a luminous paint used on some models of Seiko, Citizen, Lorus, and Pulsar watches. Lumibrite (SrAl2O4 + Eu + Dy - Strontium aluminate doped with Europium and Dysprosium) or is a luminous paint used on some models of Seiko, Citizen, Lorus, and Pulsar watches.
Lumibrite is based on LumiNova branded pigments, invented in 1993 by the Nemoto & Co., Ltd. staff members Yoshihiko Murayama, Nobuyoshi Takeuchi, Yasumitsu Aoki and Takashi Matsuzawa as a safe replacement for radium-based luminous paints.[1] The invention was patented in 1994 by Nemoto & Co., Ltd. and licensed to other manufacturers and watch brands.[2]
This kind of luminescent pigment glows brighter for longer than the previous generation of luminescent pigment paints, and is environmentally friendly (non radioactive).[3][4][5][6]
See also edit
References edit
- ^ "NEMOTO & CO., LTD. | Products & Services". Archived from the original on 2008-12-05. Retrieved 2008-11-26.
{{cite web}}: Check|url=value (help) - ^ United States Patent 5,424,006 'Phosphorescent phosphor'
- ^ "FAQs - Lumi Brite | SEIKO WATCH CORPORATION". Archived from the original on 2016-03-04. Retrieved 2015-11-09.
- ^ "Index of /Article/Lume".
- ^ Asian Sources Timepieces. Trade Media Limited. 1995.
- ^ All About Seiko LumiBrites. Keeper of the Time.
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