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[Discontinued] Luminance Colorimeter : BM-7A

Achieve high accuracy and high speed
Reasonable luminance colorimeter

[Discontinued] Luminance Colorimeter

  • Outline
  • Features
  • Specification

Outline

This product remains a long-selling product which has been used as de facto standard in FPD and lamp industry field. Both high accuracy and high speed measurement have been realized at low price.
BM-7A is suitable for using product line or adjusting of the light source in the measurement illuminant color field. And, connecting the BM-7A with our spectroradiometer SR-3A, and BM-7A directly can compensate for instrumental error easily without manual data entry. This function is offered consistent measurement quality on a long period of time.

Features

Features

  • High-speed (0.5sec) measurement and high accuracy (±2%) measurement
  • It is easy to adjust the instrumental error with two compensates function
  • Analog voltage output (option)  It can be collect a data with Oscilloscope

 

Applications

  • Measurement luminance and chromaticity
    - TV, PC, Tablet, Smart phone display.
    - Automobile interior panel.
    - General lighting, Special light source
    - Traffic signal,
    - Digital signage board

Specification

Specifications

Photo detector 3-element Silicon photodiode
Optical system Objective lens : f=80mm F2.5, Eyepiece lens : View field 5°
Spectral sensitivity Similar to CIE1931 color matching function
Measurement angle 2°/1°/0.2°/0.1° *selectable
Measurement distance 350mm - ∞ (distance from metallic tip of objective lens)
Measurement range Auto/Manual 5-range
Measurement(*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⊿
Range of illuminance(*2) 0.01 - 12,000,000 cd/m²
Luminance range for guaranteed accuracy(*2) 2° : 1 - 30,000cd/ m²
1° : 4 - 120,000cd/ m²
0.2°: 100 - 3,000,000cd/ m²
0.1°: 400 - 12,000,000cd/ m²
Accuracy in luminance(*3) ±4% : 1 - 5 cd/m², ±2% : 5 cd/m² or more
Accuracy in chromaticity (1) dx, dy : ±0.002(*4)
(2) dx, dy : ±0.01 (O-55, Y-48, A-73B, IRA-05, T-44) (*4)
dx, dy : ±0.03 (R-61, B-46, V-44, G-54) (*5)
Repeatability in chromaticity(*6) 1.0% : 1 - 5cd/m²,     0.5% : 5 cd/m² or more
Repeatability in chromaticity (*6) 0.005: 1-5cd/m²      0.002: 5 cd/m² or more
Measurement time about 0.5sec
Analog output (Option)
  • Analog voltage output : DC 0 - 3V (X2・Y・Z)
  • Response time (FAST) :
    Range-1: about 30ms Range-2: about 30ms
    Range-3: about 30ms Range-4: about 0.3ms
    Range-5: about 0.3ms
Display Dot-matrix 20caracters x 4rows with backlight
Interface RS-232C, USB
Power supply Dedicated AC adapter AC100-240V, 50/60Hz
Power consumption about 2.5W
Use conditions Temperature 0 - 40℃,
Humidity:85% RH or less (no condensation)
Outer dimensions (W×D×H) 120×325×162mm
Weight 3.0kg


(*1) : ±⊿ : difference of standard value
(*2) : Standard illuminance A
(*3) : Standard illuminance A, Auto Rage, measuring angle 2°
(*4) : Standard illuminance A, 10cd/m² or more
(*5) : Standard illuminance A, with combination of standard illuminant and color glass filter, ≧100cd/m²
(*6) : Standard illuminance A, Auto Rage, measuring angle 2°, 2σ, SLOW mode
 

Measurement area (Diameter Φ)

(mmφ)
Measurement
angle
Measurement distance (*1)
350mm 500mm 1000mm 5000mm 10000mm
10 15.4 32.8 169 341
5 7.7 16.4 85 170
0.2° 1 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
0.01-30 0.03-90 0.1-300 1-3000 10-30,000
0.04-120 0.12-360 0.4-1,200 4-12,000 40-120,000
0.2° 1-3,000 3-9,000 10-30,000 100-300,000 1,000-3,000,000
0.1° 4-12,000 12-36,000 40-120,000 400-1,200,000 4,000-12,000,000

 

Available Accessories

  • Attachment Lens
: AL-6/AL-11/AL-12
  • Reference White Board
: WS-3
  • CCD Adapter
: IA-1A
  • Fiber probe
: FP-3P
  • Tripod 5N
: Tripod5N
  • Tripod
: Tripod-SR
  • Fine Control Table
: S-4
  • Mesh Filter
: MF-10/MF-100
  • Carrying Case
 

 

* Measurement area with attachment lens (mmφ)
Measurement
angle
Lens type (Measurement distance)
AL-6 (43-57mm) AL-11 (20.4-24.8mm) AL-12 (165-197mm)
1.98-2.75 1.22-1.49 3.11-3.97
0.99-1.37 0.61-0.74 1.56-1.99
0.2° 0.20-0.27 0.12-0.15 0.31-0.40
0.1° 0.10-0.13 0.06-0.07 0.16-0.20