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Laundry detergent fluorescing under ultraviolet light. Optical brighteners, optical brightening agents (OBAs), fluorescent brightening agents (FBAs), or fluorescent whitening agents (FWAs), are chemical compounds that absorb light in the ultraviolet and violet region (usually 340-370 nm) of the electromagnetic spectrum, and re-emit light in the blue region (typically 420-470 nm) through the ...
Ophir Optronics Solutions is a multinational company that sells optronics solutions. The company develops, manufactures and markets infrared (IR) optics and laser measurement equipment. Founded in 1976, the company was traded on the Tel Aviv Stock Exchange from 1991 until it was acquired, and was a constituent of its Tel-tech index. [ 1 ]
Laundry detergents may contain builders (50% by weight, approximately), surfactants (15%), bleach (7%), enzymes (2%), soil antideposition agents, foam regulators, corrosion inhibitors, optical brighteners, dye transfer inhibitors, fragrances, dyes, fillers and formulation aids.
E)-Stilbene itself is of little value, but it is a precursor to other derivatives used as dyes, optical brighteners, phosphors, and scintillators. [25] Stilbene is one of the gain mediums used in dye lasers. [26] 4,4 ′-diamino-2,2 ′-stilbenedisulfonic acid is a popular optical brightener used in some laundry detergents.
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In 2001, Lucent Technologies' Optical Fiber Solutions business was sold to Furukawa Electric Co. Ltd. The new company became OFS Fitel, LLC, headquartered in Norcross (near Atlanta), Georgia, USA. [5] [better source needed] In 2010, OFS and Jiangsu Hengtong Optic-Electric Co., Ltd. established a joint venture company in China.
The current holding company of the group, Sunny Optical Technology (Group) Company Limited, was incorporated in the Cayman Islands on 21 September 2006, as an exempted company. [12]: 101, 103 Sunny Optical became a listed company in 2007. [14] It became a component of the blue-chip index the Hang Seng Index in 2017. [15]
HFCL Limited is an Indian technology company which designs, develops, manufactures telecommunications equipment, fibre-optic cables and other related electronics. [6] [7]The company is based in Gurugram and listed on both the Bombay Stock Exchange (BSE) [8] and the National Stock Exchange (NSE). [9]