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Luminance Colorimeter BM-5AC

BM-5A series for next-generation!

Outline

Recently, luminance and chromaticity management of FDD, Automotive instruments, Fluorescent substance and optical device has been increased.
BM-5AC is a high sensitivity luminance colorimeter combines high reliability, operability and high speed.

Features

■ 5 steps selectable measurement angle.
It can measure the object from particle area to wide area without attachment lens.
■ Built-in analog output, it can be data collect a data with a oscilloscope.
■ High speed response speed 0.05ms (Max).
Building up and falling down time of the flicker light can be measured using Oscilloscope.

Principal use

■ Measurement luminance and chromaticity.
– TV, PC, Tablet, Smart phone display.
– Ultra micro spot for automobile interior panel.
– Fluorescent material, phosphorescence material, special light source.

Specifications

Photo detector Photomultiplier tube
Optical system Objective lens : f=80mm F2.5, Eyepiece lens : View field 5°
Spectral sensitivity Similar to CIE1931 color matching function
Measurement angle 3°/2°/1°/0.2°/0.1° *selectable
Measurement distance 350mm – ∞ (Distance from metallic tip of objective lens)
Measurement range Auto/Manual 5-range
Function(*1) x, y, L  (x, y: chromatic coordinate, L: luminance) and ±⊿
u’, v’, L (u’, v’: chromatic coordinate, L: luminance) and ±⊿
X, Y, Z  (X, Y, Z: Tristimulus value) and ±⊿
Tc, duv, L (Tc: Correlated color temperature and Deviation) and±⊿
CIE1976 L*a*b*, ⊿Eab* and±⊿, CIE1976 L*u*v*, ⊿Euv*and±⊿
Measurable range(*2) 0.00005 – 1,200,000 cd/m²
Accuracy in luminance(*3) ±4% or less
Accuracy in chromaticity (1) dx,dy : ±0.005 or less (*3)
(2) dx,dy : ±0.008 or less (*4)
Repeatability in luminance(*5) 2.0% : 0.005 – 0.025cd/m²
0.8% : 0.025 cd/m² or more
Repeatability in chromaticity(*6) 0.003
Measurement time(*7) Approx. 2sec
Response speed NORMAL MODE (All Range) : Approx. 30ms
FAST MODE :
Range-1: Approx. 5ms  Range-2: Approx. 0.5ms
Range-3: Approx. 0.05ms Range-4: Approx. 0.5ms
Range-5: Approx. 0.05ms
Analog output DC 0 – 4V (X2・Y・Z)
Display Dot-matrix 20 characters x 4rows with backlight
Interface RS-232C, USB
Power supply Dedicated AC adapter AC100V-240V, 50/60Hz
Power consumption Approx. 20W
Use conditions Temperature : 0-40℃, Humidity : 85% RH or less (No condensation)
Outer dimensions (W×D×H) 154×355×212mm
Weight 3.6kg

(*1)±⊿ : difference of standard value.
(*2)For standard illuminance A.
(*3)For standard illuminance A, Auto Rage.
(*4)For a combination of the standard source A and the next colored glass,when COLOR ADJUSTMENT is applied.
O-55,Y-48,A-73B,IRA-05,T-44,R-61,B-46,V-44,G-54)
(*5)For standard illuminance A, measuring angle 3°, 2σ, Single mode, Auto Range.
(*6)For standard illuminance A, 2σ, Single mode, Auto Range.
(*7)Single measurement mode.

Measurement area (Diameter φ)

mmφ
Measurement
angle
Measurement distance [mm] (*)
350 500 1000 5000 10000
15.0 23.1 49.2 255 510
10.0 15.4 32.8 169 341
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

(*) The measurement distance is the distance from the tip of the metal fixture on the instrument of the objective lens.

Display Luminance Range

cd/ m²
Measurement
angle
Range-1 Range-2 Range-3 Range-4 Range-5
0.00005-0.15 0.0005-1.5 0.005-15 0.05-150 0.5-1,500
0.0001-0.3 0.001-3 0.01-30 0.1-300 1-3,000
0.0004-1.2 0.004-12 0.04-120 0.4-1,200 4-12,000
0.2° 0.01-30 0.1-300 0.4-1,200 10-30,000 100-300,000
0.1° 0.04-120 0.4-1,200 4-120,00 100-300,000 400-1,200,000

Accessories

■ Attachment Lens : AL-6
■ Attachment Lens : AL-11
■ Attachment Lens : AL-12
■ Reference White Board : WS-3
■ CCD Adapter : IA-2
■ Fiber probe : FP-3P
■ Tripod : Tripod5N
■ Tripod : Tripod-SR
■ Fine Control Table : S-4
■ Mesh Filter : MF-10/MF-100

75-1, Hasunuma-cho, Itabashi-ku, Tokyo, 174-8580, Japan
TEL: +81-3-3558-2642, FAX: +81-3-5392-4992
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