Light filters using yellow melanin and melanin-like...

Details Light filters using yellow melanin and melanin-like... Light filters using yellow melanin and melanin-like...

2006-05-04

2011-11-01

Choi, Ling (Department: 1761)

Compositions

Light transmission modifying compositions

C351S159000, C359S350000, C359S355000, C359S356000, C359S361000, C359S642000, C428S412000, C428S441000, C523S106000, C524S110000, C210S656000

Reexamination Certificate

active

08048343

ABSTRACT:
Light filters that use yellow melanin or melanin like materials prepared to have a yellow color and a melanin transmission spectrum in combination with a photochromic dye are disclosed. The yellow form of melanin has minimal impact on the perception of light intensity with transmission values greater than 80%. The combination allows for a single light filter suitable for both night driving and sunglass applications and which also preserve color perception.

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Gallas, J. M. Melanin-based photoprotective products in plastics Melanin; Its Role in Human Photoprotection, A Melanin Symposium, Washington, D C., Mar. 11-12, 1994 (1995), Meeting Date 1994, 277-284. Editor(s): Zeise, Lisa; Chedekel, Mlles R.; Fitzpatrick, Thomas B. Publisher: Valdenmar Publishing, Overland Park, Kans.

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