- CCFL Backlight
- Exterior lighting
- Head/Rear Light
- LCD Backlight
- LCD Film
- LCD Module
- LED Lighting
- OLED Lighting
- Special Lighting
Luminance Colorimeter BM-7AC
It was realized in about 0.5 seconds quantitative evaluation that is for luminance, chromaticity, correlated color temperature, etc.
in mass production line.
Outline
It is the latest model of the long-selling product BM-7 series which we are used as a standard measuring instrument for luminance/chromaticity measurement of FPD (Flat Panel Display) and various light source lamp.
This product archives high chromaticity accuracy and high speed, and it is suitable for brightness management of light source, in-line measurement and so on in the light source color measurement field.
Moreover, it provides more stable measurement by direct color correction function from other instruments made by our company.
Features
￭ High-speed (0.5sec) measurement and high accuracy (±2%) measurement.
￭ It is easy to adjust the instrumental error with two compensates function.
￭ Available in analog voltage output (option) named BM-7AC-ANA for measuring response.
It can collect a data by connecting with Oscilloscope.
Principal use
￭ Optical property evaluation for flat panel displays, luminance / chromaticity / color temperature measurement for lamps and other light sources.
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 luminance(*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 | dx、dy ： ±0.002 (*4) |
| Repeatability in luminance(*5) |
1.0% ： 1～5cd/m²
0.5% ： 5 cd/m² or more |
| Repeatability in chromaticity(x,y)(*5) |
0.005： 1～5cd/m²
0.002： 5 cd/m²～ |
| Measurement time | Approx. 0.5sec |
| Analog output (Option) | Analog voltage output : DC 0 – 3V (X2・Y・Z) Response time (FAST) : Range 1: Approx. 30ms, Range 2: Approx. 30ms Range 3: Approx. 30ms, Range 4: Approx. 0.3ms Range 5: Approx. 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 | Approx. 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, Auto Rage, measuring angle 2°, 2σ, SLOW mode.
Measurement area (Diameter mmφ)
| Measurement angle |
Measurement distance [mm] (*) | ||||
|---|---|---|---|---|---|
| 350 | 500 | 1000 | 5000 | 10000 | |
| 2° | 10 | 15.4 | 32.8 | 169 | 341 |
| 1° | 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 |
(*)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 |
|---|---|---|---|---|---|
| 2° | 0.01～30 | 0.03～90 | 0.1～300 | 1～3000 | 10～30,000 |
| 1° | 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 |
Accessories
￭ Attachment Lens: AL-6
￭ Attachment Lens: AL-11
￭ Attachment Lens: AL-12
￭ Reference White Board : WS-3
￭ CCD Adapter: IA-1A
￭ Fiber probe: FP-3P
￭ Tripod 5N: Tripod5N
￭ Mesh Filter: MF-10 / MF-100
￭ Carrying Case: TR-2
* 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) | |
| 2° | 1.98～2.75 | 1.22～1.49 | 3.11～3.97 |
| 1° | 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 |