Topcon RD-80SA, Инструкция по эксплуатации

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59
Appendix
Specification
Measurement angle
：
2° only
Optics
Viewfinder field of view
：
5 °
Objective lens
：
f = 80mm F2.5
Photo detector
：
Photomultiplier Tube
Measurement distance
：
350mm
～ ∞
(from the tip of the metal fixture on the
instrument of the objective lens)
Measurement Diameter
(Unit:
mmφ)
Measurement distance(
ｍ
)
0.35 0.5 1 5 10
Diameter 10 15.4 32.8 169 341
※
The measurement distance is the distance from the tip of the metal fixture on the instrument
of the objective lens.
※
The diameter may change slightly according to the matching precision of the aperture mirror.
Measurement Function
The measured data are represented in following unit.
x
､
y
､
L (x y : Chromaticity, L: Luminance)
u'
､
v'
､
L (u' v' : Chromaticity, L : Luminance)
X Y Z (X, Y, Z : Tristimulus values)
Tc
、
duv
、
L (Tc : Color temperature, duv : Deviation)
Measurement time
About 1 second (SINGLE measurement, Y filter only, Range 4, Do not Auto calibration
）
Analogue output speed
80μs or less
※
The response speed in the table above is the time that it takes analog output from the
instrument to reach 90% of the peak value, when measuring an LED driven by a square
wave from a function generator.
Unit for Luminance
Candela per square meter (cd/m
2
)