 Offer clear photochromic lens grey and brown (Offer to Sell)
Trade Lead Description:
This lens are produced of high
quality, low density, and middle
index (1.56) photochromic
monomers. The photochromic
dyes are fully incorporated into
the material rather than applied
to the surface. The lenses keep
the ability to respond to UV light
longer and are more color
consistency.
Refractive Index N=1.56
ABBE Number V=42
Density 1.14g/cm3
They can reach 20% ~ 21%
transmittance after 15 minutes of
darkening by ISO standard solar
simulator. When faded indoors,
Gray and Brown lenses return
back to 60% ~ 63%
transmittance within 2 minutes.
In clear state, transmission of
these type lenses may reach
90%, and almost without base
color. After darkening by ISO
standard solar simulator, the
transmittance may reach 45%-
50%.These colours of lenses are
also fashionable, and well
accepted by the different
generations, especially young
people.
Posted from China - Jiangsu on 24 October, 2009
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