Page 49 - TOKAI Lens Catalogue revised

NIGHT COAT (NTC)
NIGHT COAT (NTC)
Night Coat(NTC)

Night Coat ( NTC) Specialized coating developed to support
your comfortable sleep

The blue light coming The blue light coming The blue light coming The clear but strong light
from lighting equipment
from smartphone from computer from TV in a room

What is the point of NTC?

① Support comfortable sleep by effectively cutting blue light around 480nm
It effectively cuts the blue light around 480nm which prevents you from sleeping.
② By using NTC coated lenses at night, your biological clock will be adjusted and keep your health.
It is the distinctive coating that can adjust biological clock
③ Reduces eye fatigue which is caused by using electronic devices such as smartphone at night.
NTC can reduce the stress to the eyes by cutting harmful blue light.
■ The comparison of spectral transmittance ■ Structure of the NTC coating
100
PGC
80
480nm band removal filter
Hard coating
Transmittance (%) 40 Exclusive AR coating
Lens
60
Hard coating
PGC
Conventional lens
20
Blue cut coating
NTC ・ Proguard Coating standard to prevent dust and stain
0
380 400 420 440 460 480 500 520 540 ・ It can also be used with LUTINA material
Wavelength (nm)
Ultraviolet Visible ray
rays
TOKAI OPTICAL CO.,LTD. 2016.12