- A
photochromic lens is an
optical lens that
darkens on
exposure to
light of
sufficiently high frequency, most
commonly ultraviolet (UV) radiation. In the...
-
absorption spectrum. This
reversible structural or
geometric change in
photochromic molecules affects their electronic configuration,
molecular strain energy...
-
Transitions Optical is a U.S.-based
company known for
manufacturing photochromic lenses,
which darken on
exposure to
specific types of light. The company...
-
several related naphthopyrans. This
family of
compounds are used as
photochromic dyes in
ophthalmic gl****es. The
compound is a
colorless solid. The synthesis...
- eye protection; the
company researches and
develops technology such as
photochromic lenses,
polarized lenses,
spectral control,
among others.[citation needed]...
- the
field date back to the 1950s, when
Yehuda Hirshberg developed the
photochromic spiropyrans and
suggested their use in data storage. In the 1970s, Valerii...
- A
spiropyran is a type of
photochromic organic chemical compound,
characterized by
their ability to
reversibly switch between two
structural forms—spiropyran...
-
reacts with
photons to form
latent images via photoreduction; and in
photochromic lenses,
taking advantage of its
reversible conversion to Ag metal. Unlike...
-
produced guidance for
selection of sungl****es for driving.
Variable tint or
photochromic lenses increase their optical density when
exposed to UV light, reverting...
-
considered for a wide area of
possible applications, but the main uses are in
photochromic lenses and windows.
Biological stimuli are
endogenous form of stimuli...
