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http://www.rayclouds.com/products/lm-7m-luminance-meter/

LM-7M Luminance Meter, filter near CIE Y curve, which is the best device for measuring the Luminance of the displays. High sensitive silicon photodiode sensor for short distance and high precision luminance measurement. Luminance measurement as low as 0.001cd/m2, standard measurement software, instrument continuous and interval measurement via computer control and view data through software.
LM-7M Luminance Meter Overview
LM-7A luminance measurement device, optional desktop controller, robust and precise measurement devices, LCD display designed to show measurement values directly. The instrument can be calibrated and the measurement values are consistent with BM-7A/CS-2000. Conventional used for Luminance measurement on the production line. Optional probes with different measuring diameters. RS232 interface for remote monitoring of computer. Widely used in backlight modules, LCD displays, OLED, various FPD, and optical material measurement.

RayClouds LM-7M Luminance Meter Characteristic
High Sensitive
High Sensitive Silicon Photodiode Sensor
Low Noise, High Sensitive Board Design

Luminance Measurement
Luminance as low as 0.001cd/m2

High Speed • High Accuracy
Iterative Precision:±1%(Lv)
Accuracy:±3%(Lv)
Sampling rate up to 100Kbs
LM-7M Luminance Meter Advantage
Luminance, GAMMA And Flicker
Filter near CIE Y curve

Flicker
Accurate Measurement with High Frequency
Simultaneous measurement FMA and JEITA modes

Software
Standard measurement software, instrument continuous and interval measurement via computer control and view data through software .

 LM-7M Luminance Meter Specification
ModelLM-7MLM-7A
DetectorSilicon photo cell (CIE 1931 Y filter) (Max five probes supported)
Measurement areaØ10mm or Ø27mm
Working Distance30 ± 5mm
Acceptance angle5th
Expose time1msec~5sec
A/D resolution16bit
Display range0.0001 to 20,000cd/m2
LuminanceMeasurement Range0.001 to 2000,000cd/m2
Accuracy*¹0.1~5cd/m2 ±3%
≥5cd/m2 ±2%
Repeatability(σ)*¹0.1~5cd/m2 1%
≥5cd/m2 0.5%
FlickerFMADisplay range:0~100%; Accuracy:±1%
JEITAMeasurement range:≥10 cd/m2
Frequency range:0~128HZ
Accuracy:±0.5db
Measurement speed0.1~5cd/m25sec
≥5cd/m220/sec
Flicker (JEITA or FMA)1024/sec
InterfaceUSB2.0
Operating temperature5 to 50ºC
Input VoltageAC 220V

• 1. Measurement of luminance and chromaticity in the RayClouds conditions (using the standard LCD screen (6500K, 9300K)).
• Specifications and appearance are subject to change without prior notice.

LM-7M Luminance Meter Ordering Details
NameCategoryNumber
ProbeØ10mm
27MMLM-P-10
LM-P-27
Data Cable2m
3m
5m
10mLM-USB-02
LM-USB-03
LM-USB-05
LM-USB-10
Power5V-3ALM-PW-05
LM SoftwareV1.0LM-V1.0
Software ManualLM SoftwareLM-SM-V1
KeyUSBLM-KEY-19
Calibration CertificateStandard Light Source A
LED Light Source
Standard LCD at 6500KLM-CAL-A
LM-CAL-LED
LM-CAL-LCD
Probe Mask（Optional）Black MaskLM-PM-01
Measurement Bracket（Optional）
Probe Bracket (Big)
Probe Bracket (Small)LM-BL-01
LM-BS-02
Instrument Bag（Optional）L*W*H (290*90*90mm）LM-PK-041

• Note: Please order the appropriate product specifications according to your needs.