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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 ]
The blue light emitted by the brightener compensates for the diminishing blue of the treated material and changes the hue away from yellow or brown and toward white. Optical brighteners are used in laundry detergents, high brightness paper, cosmetics, high-visibility clothing and more.
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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]
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 company was founded by Brijendra Kumar Gupta. [1] Headquartered in Kolkata, the company has over 70 stores across India [2] and employs over 600 people.. In 1959, the company set up its first retail outlet in Gariahat, Kolkata.
1997: Established 1999: Incorporated 2001: ISO 9001 Certified 2005: Main factory built (Ochang, Cheongju-city, South Korea) 2006: ISO14001 Certified