Photochromic dye materials

Fine Chemicals Business

Generic names Photochromic dye materials
Product name Photochromic dye materials
Main applications Eyeglass lenses
Special properties Quickly changes color and returns to transparency, excellent colorability, durable, protects against ultraviolet rays

Product overview

Photochromic dye materials are clear resins that change color to either gray or brown when exposed to the sun's ultraviolet rays, and return to their colorless state when no longer exposed. Tokuyama employs a polishing method and a coating method to cover the plastic lenses with photochromic compounds that become colored by ultraviolet rays.


Photochromic dye materials Applications

Photochromic dye materials are mainly used for eyeglass lenses, including lenses for regular eyeglasses as well as sunglasses. Lenses made with photochromic dye materials are ideal for both indoor and outdoor use. They become transparent indoors, and turn to gray or brown outdoors when exposed to the sun, while also protecting the eyes from harmful ultraviolet rays.

Special characteristics

Photochromic dye materials Special characteristics

Photochromic dye materials offer a number of color variations from transparent to gray and brown, and can also be colored with the three primary colors of red, blue, and yellow. Tokuyama has reached the world's best level of quality for these materials with regard to the following characteristics:

  • ・Quickly changes between transparency and color
  • ・User sees fully vivid colors even on hot summer days
  • ・Highly durable
  • ・Blocks over 99% of ultraviolet rays regardless of the color

For more information:

TS Department, Life & Amenity Business Division
TEL: +81-29-864-6024
FAX: +81-29-864-6032

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