- 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 spectra. This
reversible structural or
geometric change in
photochromic molecules affects their electronic configuration,
molecular strain energy...
-
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...
- 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
organic chemical compound,
known for
photochromic properties that
provide this
molecule with the
ability of
being used in medical...
-
perform work upon a
change in its
shape whereas a
machine does. However,
photochromic compounds are the
necessary building blocks for
light driven molecular...
-
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]...
-
branding of the CR-39 lens material.
Transitions – #1
selling brand of
photochromic lenses.
Formerly a
joint venture between Essilor and PPG.
Foster Grant...
-
Transitions Optical is a U.S.-based
company known for
manufacturing photochromic lenses,
which darken on
exposure to
specific types of light. The company...
