Page 50 - TOKAI Lens Catalogue revised

NCC Neutral Colour Coating
NCC Neutral Colour Coating
Neutral Colour Coating(NCC)

Neutral Colour Coating

A more natural view and a more comfortable view

Key Points

1 Maintains a Natural View D e s i g n e d w i t h P r e c i s i o n
… . l i k e a c a m e r a f i l t e r
With the NCC, the colours of the scenery can
be seen more naturally and more comfortably Optical Technology and the Technology of
by reducing the amount of light equally for all the Neutral Density Filter Combined
visible light waves.
Optical Lens Technology
2 Reduces Glare
Conventional Lens
Like sunglasses the NCC reduces the glare
for a comfortable view. 1.76
3 Protects the Eyes ND Filter Index Lens
S -6.00
The NCC cuts out the light which can be
harmful to the eyes including ultraviolet rays. EUTRAL OLOUR OATING 50％ Thinner
It also can help to reduce eyestrain. Premium Coating for 1.76 Index Material

4 Comes in 2 Colours Neutral Density Filters on cameras are filters used to reduce the amount
of light without changing the colours by absorbing the light waves equally.
The NCC fits various uses with two densities
… Dark and Light.

Effectiveness
The pictures show that the NCC reduces the amount of light without changing the colours
w h i c h a r e s e e n , u n l i k e o r d i n a r y b r o w n a n d g r e y s o l i d t i n t e d l e n s e s .
Views with . . .

Ordinary Ordinary N C C D A R K
Brown Colour (50%) Grey Colour (50%) N a t u r a l C o l o u r C o a t i n g D a r k C l e a r L e n s
( E q u i v a l e n t t o 5 0 % t i n t e d l e n s e s )
Spectral Transmittance Graph of the Colour
Dark (Equivalent to 50% tinted lenses)
100
S p e c t r a l T r a n s m i t t a n c e C u r v e C o m p a r i s o n 80
60
100 NCC (Dark)
Ordinary Grey Colour (50%) Transmittance （％） 40 20
Ordinary Brown Colour (50%)
80
T r a n s m i t t a n c e ( % ) 60 Light (Equivalent to 20% tinted lenses) 700 800
0
300
400
600
500
Wavelength（nm）
40
100
20
0 Wavelength (nm) 80 60
300 400 500 600 700 800
Ultraviolet Infrared Transmittance （％） 40
Rays Visible ray Rays 20

0
300 400 500 600 700 800
Wavelength（nm）
TOKAI OPTICAL CO.,LTD. 2016.6