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Luminance Colorimeter : BM-5AC

BM-5A series for next-generation!
High accurate chromaticity like spectroradiometer was developed!

Luminance Colorimeter

  • Outline
  • Features
  • Specification

Outline

Recently, luminance and chromaticity management of FDD, Automotive instruments, Fluorescent substance and optical device has been increased. Especially, the needs for more measured weak optical signal and faster instrument are growing.
We achieve with high chromaticity and measuring speed at BM-5AC, compared with current model BM-5AS.

Features

Features

  • Improvement of chromaticity accuracy.
  • 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.

 

Applications

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

Specification

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)
(3) dx,dy : ±0.005 or less (*5)
Repeatability in luminance(*6) 2.0% : 0.005-0.025cd/m²     0.8% : 0.025 cd/m² or more
Repeatability in chromaticity(*7) 0.003
Measurement time(*8) About 2sec
Response speed NORMAL (All Range) : about 30ms
FAST Range-1: about 5ms     Range-2: about 0.5ms
Range-3: about 0.05ms     Range-4: about 0.5ms
Range-5: about 0.05ms
Analog output DC 0 - 4V (X2・Y・Z)
Display Dot-matrix 20caracters x 4rows with backlight
Interface RS-232C, USB
Power supply Dedicated AC adapter AC100V-240V, 50/60Hz
Power consumption about 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) : with combination of standard illuminant and color glass filter
         O-55,Y-48,A-73B,IRA-05,T-44,R-61,B-46,V-44,G-54)
(*5) : Our specification LED panel of RGBW
(*6) : For standard illuminance A, measuring angle 3°, 2σ, Single mode, Auto Range
(*7) : For standard illuminance A, 2σ, Single mode, Auto Range
(*8) : Single measurement mode
 

Measurement area (Diameter φ)

mmφ
Measurement
angle
Measurement distance (m) (*1)
350mm 500mm 1000mm 5000mm 10000mm
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


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

Luminance Display 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

 

Available Accessories

  • Attachment Lens
: AL-6 / AL-11 / AL13
  • Reference White Board
: WS-3
  • CCD Adapter
: IA-2
  • Fiber probe
: FP-3P
  • Tripod 5N
: Tripod5N
  • Tripod
: Tripod-SR
  • Fine Control Table
: S-4
  • Neutral Density Filter
: ND-10/100
  • Mesh Filter
: MF-10/MF-100