TechnoOptis BM-7AC Luminance Colorimeter

0.5-second measurement of luminance, chromaticity, and CCT for mass-production line inspection.

The BM-7AC luminance colorimeter delivers 0.5-second high-speed measurement for luminance, chromaticity, and correlated color temperature in production environments. Designed for FPD, LCD, LED, and OLED display evaluation, it supports a wide luminance range up to 12,000,000 cd/m² with selectable 2°, 1°, 0.2°, and 0.1° measurement angles. Ideal for in-line quality control, brightness management, and automated optical inspection systems.

Luminance Colorimeter

Model:

BM-7AC

Maker:

TechnoOptis

Download Materials

Catalog DL

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.

Luminancecolorimeter BM-7AC Video manual

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 Lab, ⊿Eab and±⊿, CIE1976 Luv, ⊿Euvand⊿
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] ()**
Measurement angle	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

Inquiry