Topcon SR-LEDH
Ultra-High Speed Spectroradiometer

NEW PRODUCT ALERT – As of February 2022, the Topcon SR-LEDH has been replaced by the SR-5 Series. Please visit the SR-5 Series Product Page to learn more.

The SR-LEDH Spectroradiometer is designed to meet the demands of production line or QC testing with its fast measurement mode, SDK, and slim body housing. The SR-LEDH is capable of measuring ultra-high luminance displays and LEDs up to 4,500,000 cd/m² in under half a second.

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Features

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High-speed measurement (0.4 sec)

Measures luminance and color as high as 4,500,000 cd/m² with high accuracy and speed (0.4sec) via LAN and FIX mode

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Designed for Production Line or Equipment

Slim body design, software development kit (KIT), and fast measurements make the SR-LEDH ideal for production line testing

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Luminance, spectral distribution, and CCT measurements

Supports Luminance, Spectral Distribution, CIE1931 and CIE1976 chromaticity coordinates, Tristimulus value XYZ, CCT and Deviation, CIE1976 L*a*b*, Eab*± , CIE1976L*u*v* Euv*±

Applications

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Luminance, Chromaticity, Color rendering index and Color temperature for LED Backlights, LED illuminators

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Luminance and Chromaticity of automotive headlights and interior panels

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Luminance and color measurement of various light sources

Specifications

Compare Topcon Instruments

Parameter	Measurement Angle
Parameter	2°	1°
Optical System	Objective lens: f=82mm F2.5 Collimating lens: View field 5°
Measurement Distance	350mm – Inf.
Luminance Range cd/m²	10 ~ 1,500,000	30 ~ 4,500,000
Spectral Range	380 ~ 780 nm range @ 1 nm resolution
Luminance Accuracy	±2% (for standard illuminant A)
Color Accuracy	±0.002 in 1931 CIE x,y Space
Spot Size at 1m	32.2 mm	16.1 mm
Min. Spot Size at 35cm	10 mm	5 mm
Dimensions	Approx 413mm (L) x 98mm (W) x 232mm (H)