Electroluminescence/Photoluminescence

TravEL-Spot

Electroluminescence Imaging of modules, in the field and indoors 

The TravEL-Spot is a flexible system that can be quickly set up in the field or other temporary testing location with an optional wide-angle lens for On Module Imaging 

Test with Tripod
on Ground

Or Test with Tripod on Panel

Specifications

Camera:

  • Resolution: 24.3 MP
  •  Memory Card: 64 GB
  • Lens: 35 mm
  • Filters: 1000 nm long pass
  • Power Supply:
  • Input Voltage Range: 100-120V AC 60 Hz or 220-240V AC 50 Hz
  • Output: Up to 15A, 60V DC Custom high-voltage power supplies available
  • MC4 Cables: 5m or desired length
  •  Laptop Computer:
  •  Processor: AMD Ryzen 5 8645HS
  •  Storage: 512 GB
  •  Screen Size: 16 in.

Tripod:

  •  Height: 2.4 m
  •  Extension: 0.4 m
  •  Barcode Scanner: 1D & 2D (QR code)

Total System Weight:

  •  Standard Configuration: 25 kg
  •  With OMI Package: 27 kg

Test During Day or Night​

Advanced filtering and control of the power supply from IMPEL allow the capture of multiple images to eliminate the sunlight noise from the images. This flexibility can extend the workday, reduce setup complexity and reduce testing costs.

Daytime EL is definitely a win! It adds value to my business by expanding where and when we can perform EL testing, and this help me to win more testing contracts.

– Beryl Weinschenker, Founder & CEO.

All Correct Solo Logo

High-Resolution Imaging

BrightSpot integrates hardware components with its IMPEL software for device control as well as image capture and processing. Recipes make it easy to replicate camera and power supply parameters as well as image contrast enhancement and cropping

Components

Mount TravEL-Spot on its tripod in the standard configuration, or opt for the On-Module-Imaging package to mount directly on panels.

Full-Frame sensor camera for wide FOV with IR

Full-Frame sensor camera for wide FOV with IR

Windows laptop with IMPEL Software

Windows laptop with
IMPEL Software

Tripod with extension & stabilization weight bag

Tripod with extension & stabilization weight bag

Travel Spot

OPTIONAL: On-Module-Imaging (OMI) package

Mount TravEL-Spot on its tripod in the standard configuration, or opt for the On-Module-Imaging package to mount directly on panels.

TravEL-Spot Includes
  • Full-Frame sensor camera for wide field of view and high resolution, modified for sensitivity to IR wavelengths
  • Camera memory card, batteries, power and data cables
  • Programmable EL power supply, controlled by system software. Includes power cables to PV module – ring terminal to MC4
  • Tripod with extension and tripod stabilization weight bag
  • IMPEL software on a Windows laptop
  • No-charge software upgrades and usage assistance for two years
  • Wireless barcode scanner
  • UV flashlight kit
  • Rugged hard case with custom foam insert to carry all components for travel
  • Training includes manual and videos, plus a no-charge online training session
  • OPTIONAL: On-Module Imaging (OMI) package – 15 mm wide-angle lens, tripod
    stabilization arms, tripod leg bracket
    (secure to module frame)

BrightSpot shipped a TravEL-Spot system to us within 6 hours of our reaching out to them, and we were collecting EL images the next day! BrightSpot provided great support and a well designed system that helps Wolf River Electric differentiate itself on quality.

– Justin Nielsen, General Manager

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Defects Seen in EL Imaging

EL can reveal a wide range of defects.

potential-induced degradation (PID​

Hail
Damage

Inactive Cracked Segments

Drag Marks From Handling

Dendritic Cracking From Hail

Busbar/Wire
Defect

Download Product Brochure

Download the product brochure to get all the info and specs

IMPEL Software

Unified platform for EL

BrightSpot integrates hardware components with its IMPEL software for device control as well as image capture and processing. Recipes make it easy to replicate steps such as camera focusing routines, contrast adjustment, perspective correction, and image cropping.

EL imaging is no longer exclusive to nighttime hours.

IMPEL’s background subtraction feature now facilitates daytime EL images.

IMPEL software for EL power
IMPEL Software Preview

Publications

Here you’ll find white papers, case studies, and expert commentary designed to provide practical takeaways for professionals and decision-makers

Customized Defect Imaging Solutions for Perovskite and Tandem Cell/Panel Architectures

UV Fluorescence Imaging Of Defects And Bill Of Materials Variations In Bifacial Solar Panels

EUPVSEC – Bilbao, Spain – Sep 22, 2025

Ultraviolet Fluorescence Imaging for Photovoltaic Module Metrology: Best Practices and Survey of Features Observed in Fielded Modules

IEEE Journal of Photovoltaics ( Volume: 15, Issue: 3, May 2025)

Low-Cost Daytime Electroluminescence Imaging

NREL PV Reliability Workshop – Lakewood, CO USA – Mar 6, 2025

UV Fluorescence Imaging for Solar Panel Product Development and Durability Testing

NREL PV Reliability Workshop – Lakewood, CO USA – Feb 28, 2024

Unveiling the Unseen: Harnessing UV Fluorescence for Comprehensive Rooftop PV System Assessment and Successful Insurance Claims Process

NREL PV Reliability Workshop – Lakewood, CO USA – Feb 28, 2024

Detection and Impact of Cracks Hidden Near Interconnect Wires in Silicon Solar Cells

50th IEEE PVSC, Jun 12 2023