- 103 -
6. Appendix
Specifications and Performance
• SR-LEDW
Optical system
Objective lens:
Focal distance
f = 82 mm F 2.5
Eyepiece lens:
Finder visual field
5 °
Vision adjusting range
±5 diopt
Spectroscope
Spectrum wavelength width:
5~8 nm
Spectral diffraction:
Polychrome meter
Dispersive element:
Diffraction grating
Optical receiving element:
Electronic cooling linear array sensor
Measuring field:
2
, 1
, 0.2
, 0.1
with electronic adjustment
Measuring distance:
350
mm~∞ (Distance from the end of the objective lens metal fixture)
Measuring wavelength range:
380 nm~780 nm
Sampling interval:
1 nm
Measurement mode:
Auto/Manual (Frequency/Integral time), and external vertical synchronous signal input
Measurement diameter
(Unit: mmø)
Measuring
field
Measuring distance (mm)
350
400
500
600
800
1000
2000
5000
2
10.0
11.7
15.1
18.6
25.4
32.2
66.4
169
1
4.99
5.84
7.55
9.26
12.7
16.1
33.2
84.4
0.2
1.00
1.17
1.51
1.86
2.54
3.22
6.64
16.9
0.1
0.50
0.59
0.76
0.93
1.27
1.61
3.32
8.44
* The measuring distance is the distance from the end of the objective lens metal fixture.
* The values of this table are design reference values and they are sometimes a little different
from the actual values.
Measuring functions
The following measurements can be done by using the display modes.
• x, y, Lv
(x, y: Chromaticity, Lv: Luminance cd/m
2
)
• u’, v’, Lv
(u’, v’: Chromaticity, Lv: Luminance cd/m
2
)
• X, Y, Z
(X, Y, Z: Tristimulus values)
• Tc, duv, Lv
(Tc: Correlated color temperature K, duv: Deviation, Lv: Luminance cd/m
2
)
• Le
(Le: Radiance W/sr·m
2
)
2
/10
visual field can be switched by setting in the function mode.
