photochromic


Also found in: Dictionary, Wikipedia.

photochromic

Materials that change their ability to reflect color when exposed to light are called photochromic, and the color change is proportional to their level of UV light absorption. This results in reversible color reflections. When the light source is terminated, the material changes back to a clear state. See also: Smart materials
References in periodicals archive ?
Commenting on the transaction, Hubert Sanieres, Essilor's chair and CEO, said: "This agreement marks the start of a new phase of growth for Transitions Optical, which Essilor and PPG have turned into a leader in photochromic lens products.
Vision-Ease Lens is a manufacturer of quality ophthalmic lenses including LifeRx[TM] photochromic lenses, Coppertone[TM] polarized lenses, SunRx[R] polarized lenses, and Illumina[R] progressive line-free lenses.
Consumers are aware of the dangers of long term UV exposure and see friends enjoying the benefits of prescription sunglasses and photochromics which makes them receptive to the dispenser's suggestion of this excellent option for active lifestyles," said Steve Roberts, FBDO, Hoya Lens product manager.
Materials exhibiting structural colour effects: photochromic, electrochromic, radiochromic,solvatochromic, halochromic
WATERSIDE LABORATORIES in Southampton has a new range of Infinity lenses offering Photochromic lenses in more than just grey and brown.
Spy's Delta Photochromic(TM) lenses have one of the widest transition ranges of any photochromic lens on the market and are made from NXT(R), a revolutionary innovation in unbreakable optical polymer technology.
It can also be ordered with one of the company's photochromic options and with all Hoya's award-winning coatings.
In addition, our optical products business is positioned to enjoy continued growth with the introduction of our fifth-generation Transitions photochromic lenses.
Professor of Clinical Vision Science at Bradford University, David Elliott, gave a presentation on what practitioners can do to help their cataract patients, such as recommending tints, antireflection coatings, UV blockers and photochromic lenses, (See OT-TV).
The SMIT Report notes that in some circles this might be considered overstated, since it includes products such as photochromic t-shirts and swimsuits, relatively low-tech products that nevertheless fit this report's definition of SMIT.
NATIONAL consumer advertising for Rodenstock ColorMatic, the fast fade-back photochromic, is expected to boost demand further.