Material for eyeglass lenses

Usage detail

In-mass photochromic plastic lens

  • Basic information


SunsenSors by Mitsui Chemicals

Photochromic Lenses are clear lenses which darken outdoor when exposed to Ultraviolet(UV) rays. In technical terms, photochromic lenses have the capacity to change absorption characteristics in response to radiation wavelengths, which is realized by photochromic dye which undergoes reversible chemical reaction when exposed to UV. SunSensors™ is patented in-mass technology for plastic photochromic lenses to mix the photochromic dye in the lens monomer, fully compatible with most anti-reflective (AR) and hard-coating (HC) treatments.

SunSensors™ Features

In-mass photochromic technology

In-mass photochromic technology disperses photochromic dyes throughout the lens monomer.

Middle Index

Middle index lens of 1.56 is available.

Clear Indoors and Dark outdoors

Transmission factor of visible range is 86% indoor, and the lens outdoor is classified as sunglass lens category 3 under AS/NZS 1067.

Choice of colors

Two colors, gray and brown, are available.

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Vision Care Materials Division