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NWSPEC

LED Test System | Complete Spectrometer & Integrating Sphere Solution

LED Test System | Complete Spectrometer & Integrating Sphere Solution

LED Test System

Complete turnkey optical and electrical characterization in milliseconds. Integrated photometric, colorimetric, and electrical testing for LED chips, packaged components, and assemblies—from R&D validation to high-speed production line quality control.

A fully integrated solution combining a high-precision spectrometer system, calibrated light source, programmable power supply, integrating sphere, and versatile test fixtures. Measure luminous flux, chromaticity, color temperature, CRI, and electrical parameters simultaneously with production-grade throughput.

2.8ms Test Speed
0.1nm Wavelength Resolution
1–20,000 lm Flux Range
0.3µA–2A Current Range

Why Choose the LED Test System

  • Complete Turnkey Integration: Spectrometer system, calibrated light source, programmable power supply, and integrating sphere operate as a synchronized workstation with zero calibration mismatches.
  • Millisecond Throughput: Ultra-fast 2.8 ms optical test speed enables 100% production line testing without bottlenecks.
  • High-Precision Colorimetry: ±0.0003 chromaticity accuracy and ±10K CCT precision ensure strict LED binning, batch uniformity, and quality compliance.
  • Full Electrical & Optical Characterization: Measure forward voltage (VF), forward current (IF), reverse leakage (IR), and reverse voltage (VR) simultaneously with full spectral parameters.
  • Versatile Fixture & Attachment Compatibility: Adaptable to diverse LED package types and specialized testing attachments, including board-level and in-line setups.

Complete System Components

Spectrometer System

High-precision rapid spectrophotometer covering 350–950 nm with 0.1 nm resolution and millisecond acquisition. Delivers complete photometric, colorimetric, and radiometric data in a single measurement.

Integrating Sphere

Precision optical integrating sphere designed for accurate total luminous flux collection from packaged LEDs and assemblies, featuring uniform diffuse reflectance and versatile port adapters.

Calibrated Light Source & Power Supply

Programmable constant voltage/current source (0–60V, 0.3 µA–2A) providing stable electrical drive, I-V curve characterization, and reference calibration for reliable repeatability.

Interchangeable Test Fixtures

Quick-change test holders and dedicated optical attachment interfaces designed to accommodate through-hole, surface-mount, multi-die, and circuit board testing configurations.

Application Solutions

PCB-Mounted LED Test System

Optical and electrical measurement of individual LEDs mounted on circuit boards, light bars, and display modules using specialized probe fixtures and sampling attachments.

LED Chip & Component Inspection

Wafer-level, die-level, and packaged LED testing for binning, quality sorting, and forward voltage characterization in high-volume production environments.

Finished Light Source & Luminaire QC

Final quality inspection of LED lamps, modules, and fixtures. Verify luminous flux, color consistency, CRI, and electrical safety before shipment.

Automotive & Medical Lighting QC

Rigorous electro-optical characterization for mission-critical LED components used in automotive instrument clusters, ambient lighting, and medical diagnostic illumination systems.

Compatible LED Types & Package Attachments

• Through-Hole (DIP) LEDs
• High-Power LEDs
• 5050 SMD LEDs
• 3528 SMD LEDs
• Piranha (Super Flux) LEDs
• Aluminum Substrate (Cree) LEDs
• Integrated LED COBs & Multi-Die Arrays
• PCB-Mounted LED Test Attachments

Technical Advantages

Spectral Performance

  • 350–950 nm spectral range — Covers visible and near-UV spectrum for white LEDs, phosphors, and colored emitters
  • 0.1 nm wavelength resolution — High-resolution peak wavelength detection for precise binning and spectral analysis
  • High sensitivity with low stray light — Exceptional dynamic range for reliable evaluation of weak and narrow-band emissions
  • 0.5% linearity — Stable, linear measurement accuracy across 4+ decades of luminous flux

Colorimetric Precision & Binning

  • ±0.0003 chromaticity accuracy — Standard A source traceable precision for demanding color sorting
  • ±0.0002 repeatability — Reliable consistency for blue and white LED testing
  • 100K–100,000K CCT range — Comprehensive range from warm white to ultra-cool sources
  • ±10K CCT accuracy — Tight color temperature verification across component batches
  • 0–100 CRI with ±0.3% error — Complete color rendering evaluation (Ra and R1–R15)

Electrical Characterization & Control

  • 0.3 µA–400 mA @ 60V / 400 mA–2.0 A @ 20V — Broad drive capability for both low-current indicators and high-power emitters
  • Complete I-V parameter testing — Automated readout of POL, VF, IF, VFL, IR, and VR parameters
  • Rapid test sequence — Automated routines with set delay + 1.5 ms per device for high-speed indexing
  • Industry-standard automation interfaces — USB 2.0, RS232, and SOT3 / EOT3 / PIN10 hardware I/O for handler and prober integration

Technical Specifications

Parameter Specification
Spectral Characteristics
Spectral Range 350–950 nm
Wavelength Resolution 0.1 nm
Colorimetric Characteristics
Chromaticity Coordinate Accuracy ±0.0003 (Standard A light source)
Chromaticity Repeatability ±0.0002x, ±0.0002y (Blue LED test)
Luminous Flux Range 1 lm – 20,000 lm (with compatible integrating spheres)
Linearity 0.5%
Luminance Repeatability 0.2%
CCT Range 100 K – 100,000 K
CCT Accuracy ±10 K (Standard A light source)
CRI Range 0 – 100.0
CRI Error ±0.3% + 0.5
Color Tolerance Accuracy ±1.0
Optical Test Speed 2.8 ms + integration time
Electrical Parameters
Test Parameters POL, VF, IF, VFL, IR, VR
Applicable LED Types Through-hole, SMD (5050, 3528), high-power, piranha, Cree aluminum substrate, COB integrated arrays, PCB test fixtures
Current Output Range 0.3 µA – 400 mA @ 60V; 400 mA – 2.0 A @ 20V
Voltage Output Range 0 – 60 V
I/O Quantity SOT3; EOT3; PIN10
Electrical Test Speed (Set delay + 1.5 ms) × number of devices
Communication Interfaces USB 2.0, RS232 (general circuit board & handler compatible)
Power Supply AC 220V / 3A

Accelerate Your LED Testing 

Speak with our applications engineers to configure the optimal spectrometer, integrating sphere, and test fixtures for your production line.

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Since 1993 30+ Years of Instrument Expertise
Reliable Manufacturer Manufacturing & Services
Ph.D. Founded Dr. Pingxin Wang, UT Austin
Advantages Price · Service · Speed · Technical · Data
Fast Shipping In-Stock Orders Ship Same Day

Frequently Asked Questions

How can I contact you?

Feel free to call us T+86 189-6516-4839
or email  sales@nwspec.com to:

• Place an order
• Ask for a quote
• Or if you have any other questions

You will always get a live person here at NWSPEC; never an automated system! 

We are open from 6:00AM - 7:00PM Eastern Time, Monday - Friday. 

Where can I find application notes?

If you have any questions regarding the application notes, or can't find the one you are looking for, please contact Sales at sales@nwspec.com



Do you have instructional manuals for your instruments to download?

Yes, we have instructional manuals for our instruments. They can be found on https://nwspec.com/pages/resource .

If you don't see the one you are looking for, please contact: sales@nwspec.com



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