Launch of high temperature-adaptive type photochromic lens “LUTINA PHOTO Version 2” on May 21st.

TOKAI OPTICAL CO., LTD. released “LUTINA Photo Version2” changes its color clearly with sunlight – even on days with high temperature.

The most significant feature of the newly released “Lutina Photo Version2” a high-level photochromic lens with a feature of deepening the density of lens color, which has overcome a shortcoming of conventional photochromic lens that is difficult to change the color density at high temperatures.


Available in 2 colors, gray and brown, the darkening at 40°C changes the gray lens from transmittance rate 89% to 30%, and the brown lens from transmittance rate 90% to 33%. Compared to the previous “Lutina Photo,” this represents a transmittance rate 18% improvement in darkening for the brown lens.

Furthermore, “LUTINA PHOTO Version2” incorporates the proprietary material “LUTINA”. LUTINA protects “lutein” by effectively blocking HEV light, which is a contributory factor to oxidative stress and lutein degradation.  Beyond the reduction of glare and, these photochromic lenses also the health of the eyes. They block approximately 24% of blue light even in clear indoors. Equipped with P-UV coating as a standard, they block reflected on the back surface, providing ultraviolet rays coming from 360 all directions.

Key characteristic of “LUTINA PHOTO Version2”

• Deep color payoff even at high temperatures
• Cares for your eyes all day long anytime, anywhere
• Features LUTINA material
• Blue light reduction indoors
• 360° UV protection

Color data

^{*Visual transmittance is a value that expresses the ratio (%) of the amount of light transmitted through a lens as perceived by the human eye. The higher the value, the brighter the lens is to the eye.
*The above color data may vary depending on lens material, coating and power.}

For more information, please check the page on “LUTINA PHOTO Version2”.
LUTINA PHOTO Version2