102
De
scr
ipti
on
Principle of Measurement
Spectral Fitting Method
Konica Minolta’s newly-developed spectral fitting method provides tristimulus values
(XYZ = red, green, blue) with significantly higher accuracy than that of conventional tris-
timulus colorimeters. This is achieved by using the output from 40 sensors to calculate
the spectral response corresponding to human eye sensitivity (CIE 1931 color-matching
functions).
• The CS-200 uses 40 sensors for sensitivity covering the entire visible region and
multiplies each sensor output by appropriate coefficients. This adjusts the spectral
response of the instrument to close to the CIE 1931 color-matching functions.
• In additon to the 2˚ Standard Observer, the 10˚ Standard Observer (for object-color
measurements) can also be selected, which is impossible with conventional tristimu-
lus colorimeters.
Object is measured with this spectral response and gained tristimulus values (X,Y, and Z)
are converted into L
v
xy, L
v
u'v', L
v
T
∆
uv, and dominant wavelength through calculation to
be displayed as measurement value.
Chromaticity coordinates (x,y) in Lvxy (CIE 1931 color space) can be obtained through
following formula.
X
Y
x=
, y=
X+Y+Z
X+Y+Z
X,Y, and Z are tristimulus values.
380 400
500
600
700
780
1.0
0.5
380 400
500
600
700
780
1.0
0.5
CIE 1931
color-matching functions
Spectral sensitivity of
conventional tristimulus
colorimeters
Relative sensitivity
Relative sensitivity
Wavelength (nm)
CIE 1931
color-matching functions
Spectral sensitivity
of the CS-200
Wavelength (nm)
CIE 1931 color-matching functions and spectral response
of the CS-200
CIE 1931 color-matching functions and spectral response
of a conventional tristimulus colorimeter
CS-200_E101-118.indd 102
12.7.17 4:52:12 PM
Содержание CHROMA METER CS-200
Страница 21: ...19 Installing CS 200_E001 026 indd 19 12 7 17 4 43 25 PM...
Страница 29: ...27 Setting CS 200_E027 060 indd 27 12 7 17 4 46 00 PM...
Страница 57: ...55 Setting BACK LIGHT CS 200_E027 060 indd 55 12 7 17 4 46 28 PM...
Страница 62: ...60 CS 200_E027 060 indd 60 12 7 17 4 46 32 PM...
Страница 63: ...61 Measurement Preparation CS 200_E061 86 indd 61 12 7 17 4 47 50 PM...
Страница 88: ...86 CS 200_E061 86 indd 86 12 7 17 4 48 17 PM...
Страница 89: ...87 Measurement CS 200_E087 96 indd 87 12 7 17 4 49 12 PM...
Страница 98: ...96 CS 200_E087 96 indd 96 12 7 17 4 49 24 PM...
Страница 99: ...97 Communication CS 200_E97 100 indd 97 12 7 17 4 51 08 PM...
Страница 102: ...100 CS 200_E97 100 indd 100 12 7 17 4 51 09 PM...
Страница 103: ...101 Description CS 200_E101 118 indd 101 12 7 17 4 52 11 PM...
Страница 124: ...9222 1892 A1 2005 KONICA MINOLTA INC BIIBPK Printed in Japan...