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Appendix
Specifications
Measuring Field
3° / 2° / 1° / 0.2° / 0.1° Switch type
Optical system
Viewfinder field of view : 5°
Objective lens
: f = 80
㎜
F2.5
Spectral Sensitivity Characteristics
Similar to color matching function CIE 1931
* Satisfies router conditions JIS Z 8724-1997.
Photo detector
Photomultiplier
Measurement Diameter
(unit: mm dia.)
Measuring
Field
Measurement distance (m)
0.35
0.5
1
5
10
3°
15.0
23.1
49.2
255
510
2°
10.0
15.4
32.8
169
341
1°
5.0
7.7
16.4
85
170
0.2°
1.0
1.5
3.3
17
34
0.1°
0.5
0.8
1.6
8
17
* May change slightly according to the machining precision of the aperture mirror.
* The measurement distance is the distance from the tip of the metal fixture on the instrument of
the objective lens.
Measurement Functions
The following measurements can be performed by switching the display mode.
x, y, L (x y : chromaticity, L: luminance)
and ±
⊿
u', v', L (u' v' : chromaticity, L: luminance)
and ±
⊿
X Y Z(X, Y, Z: tristimulus values)
and ±
⊿
Tc, duv, L (Tc: Color temperature, duv: Deviation) and ±
⊿
CIE 1976 L*a*b*
⊿
Eab*
and ±
⊿
CIE 1976 L*u*v*
⊿
Euv*
and ±
⊿
*±
⊿
indicates the difference from the reference value.
For example, in the case of x, y, L, this means
⊿
x,
⊿
y and
⊿
L.
Содержание Luminance Colorimeter BM-5AC
Страница 1: ...INSTRUCTION MANUAL Luminance Colorimeter Rev 7 ...
Страница 2: ......
Страница 18: ...1 Before Use 16 3 Plug the AC adapter plug into the power outlet ...