What is Optical Characterization of LEDs?

Optical characterization of LED products refers to the process of measuring and analyzing various performance aspects and properties of LEDs (Light Emitting Diodes). This evaluation is essential to ensure LED quality and performance.
It enables numerical comparison and verification of both optical and electrical characteristics. By comparing defective LEDs with good ones, failure modes can be identified.
Additionally, this data is highly useful when selecting LEDs during design considerations. Performing characterization before and after reliability testing helps determine the degree of degradation.

NEXTY Electronics Optical Characterization of LEDs

Optical Characterization of LEDs – Evaluation Items

By performing optical measurements, it is possible to understand the characteristics of the optical system.

  • Power Measurement Mode (µW/nm)
  • Total Luminous Flux Measurement (lumens) / Luminous Intensity (candela)
  • Chromaticity Coordinates (x, y) (u, v), Chromaticity Diagram
  • Correlated Color Temperature (K)
  • Color Rendering Index (Ra, R1–R15)
  • Full Width at Half Maximum (FWHM)
  • Time-Lapse Measurement at Specified Time and Intervals

Total Luminous Flux Measurement (lumens)

The total luminous flux (lumens) can be measured with an integrating sphere.

ネクスティ エレクトロニクスのLEDの光学特性評価 全光束測定の実施イメージ図

Luminous intensity measurement (candela)

Candela measurement is also possible with an adapter specifically for luminous intensity measurement.

ネクスティ エレクトロニクスのLEDの光学特性評価 光度測定の実施イメージ図

Measurement Equipment Owned

  • Integrating Sphere
    ISP500-211

    ネクスティ エレクトロニクスが所有している加速試験装置:積分球 ISP500-211
  • Spectrometer
    CAS140-CTS

    ネクスティ エレクトロニクスが所有している加速試験装置分光器 CAS140-CTS:
  • LED Optical
    Probe Tube

    ネクスティ エレクトロニクスが所有している加速試験装置:LED オプティカル プローブチューブ
  • KEITHLEY2460
    Source Meter

    ネクスティ エレクトロニクスが所有している加速試験装置:KEITHLEY2460 Source Meter

Request Process

Inquiries and quotations are free of charge.
Our services are available for devices other than those handled by NEXTY Electronics.
Please feel free to contact us if you are interested.

1. Inquiry

Submit your request via the inquiry form, including details such as sample information, quantity, budget, and desired delivery date.
If you have related documents, please send them together. (Sample information and budget can be provided within the range you are comfortable sharing.)

2. Response and Quotation

A NEXTY Electronics representative will review your inquiry and confirm details during a hearing session.
We will check the analysis content, feasibility, and any additional requirements, then provide an estimate and delivery schedule.
After reviewing the analysis details, quotation, and delivery date, if you decide to proceed, we will send a formal quotation.

3.Order Placement and Shipment of Analysis Samples

Please send us your official order form. Upon receipt, we will begin the analysis process.
The shipping address for samples will be provided by NEXTY Electronics.

4. Analysis Execution

We will perform the requested analysis.
If you require interim results, we can provide a mid-term report upon request.
Examples:
Report before moving from non-destructive to destructive analysis
Early results for large-volume analysis

5.Report Delivery

The analysis results will be compiled into a report and sent to you.
If you have any questions or require clarification, please feel free to contact us.

6. Payment and Sample Return

After acceptance, NEXTY Electronics will return the samples along with the invoice, receipt, and delivery note.
Please proceed with payment accordingly.

Contact Us

We accept consultations, questions, and quotation requests via the button below.
Our services are available for devices other than those handled by NEXTY Electronics.
For quotation requests, including the following information will help us respond smoothly:
Even if the information is not listed, please feel free to contact us. Once confirmed, a representative will get back to you.

Required Information for Quotation Request:
Request details:
Sample information:
Quantity:
Budget:
Desired delivery date:

Our Service Locations

Tokyo OfficeVAC(Value Adding Center)

Location4-495, Tateno, Higashiyamato-shi,Tokyo,207-0021 Japan
Supported Services Reliability Testing, Reverse Engineering, Optical Characterization of LEDs, ROM Writing, Screening Inspection

Key Points of Our Quality and Analysis Service Locations

At NEXTY Electronics’ VA Center Division, we provide reliable quality and analysis services you can rely on, supported by a comprehensive framework as outlined below.

  • Building Facilities

Robust Earthquake-resistant Structure

  • Security

Surveillance Camera Monitoring, Access Control System

  • Work Environment

Temperature and Humidity Control Anti-static Measures

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