LM-20 High Speed Luminance Meter

Characteristic
Specification

LM-20 High Speed Luminance Meter Characteristic

• High sensitivity
·High sensitivity silicon photodiode sensor
·Low noise, high sensitivity circuit design

• Luminance measurement
·Luminance as low as 0.001 cd/m²

• High speed • High precision
·Repetition accuracy: ± 1%
·Accuracy: ± 3%
·Sampling speed of up to 100Kbs

LM-20 High Speed Luminance Meter Specification

Model	LM-20
Tpye	Luminance
Detector	Silicon photo cell (CIE 1931 XYZ filter)
Measurement Diameter	Ø2 mm、Ø4 mm、Ø10 mm or Ø20 mm
Working Distance	30±5 mm
Acceptance angle	5º
A/D	16 bits
Display Range	0.0001 to 2,000,000 cd/m²
Luminosity	Measurement Range	0.001 to 2,000,000 cd/m²
	Accuarcy*¹	0.01 ~ 5 cd/m² ±3% ≥ 5 cd/m² ±2%
	Repeatability(σ)*¹	0.01 ~ 5 cd/m² 1% ≥ 5 cd/m² 0.5%
Flicker	FMA	Display range：0 ~ 100%；Accuracy：±1%
	JEITA	Measuremen Range：≤ 10
		Frequency Range：0 ~ 128 HZ
		Accuracy：±0.5 db
Measurement Speed	0.01 ~ 5	1 sec
	≥ 5	20 / sec
	Flicker (JEITA or FMA)	1024 / sec
	2D or 3D charts and data export to EXCEL

*Luminance and chrominance measurement is based on RayClouds conditions (using luminance 1000cd/m² standard light source, LED backlight, color temperature of 6500K LCD display).

*Specifications and appearance are subject to change without prior notice.