Backlights for Contour & Dimensional Inspection
Flat, uniform LED panels placed behind or beneath the target to create a high-contrast silhouette — the reference lighting format for dimensional measurement and contour extraction.
What Is a Backlight Used For?
A backlight is a diffuse LED panel placed behind or underneath the object, turning it into a dark silhouette against a bright, uniform background. That contrast is exactly what dimensional measurement, edge/contour detection and hole or feature counting need — where a bar light illuminates the front surface directly and a dome light handles reflective or curved parts, a backlight instead removes surface detail entirely in favor of a clean outline.
The object blocks the central rays, producing a sharp silhouette against the glowing panel.
Technical Highlights
- Industrial design: aluminum frame for heat dissipation, integrated M12 connector for a standardized wiring harness.
- Hardened 24VDC electronics built for continuous production-line duty.
- Uniform diffuse output across the full panel via an opal diffuser, minimizing hot spots at the silhouette's edge.
- White LED is the most common choice for maximum contrast; Red or Infrared available for specific material or contrast requirements.
- Compatible with continuous and strobe/overdrive operation for high-speed lines.
| Light Field / Beam Type | Wavelength Options | Typical Optical Window | Operating Mode |
|---|---|---|---|
| Standard Rectangular Panel | White, Red, Infrared | From 50×50mm to 300×300mm active area (configuration dependent) | Continuous or Strobe/Overdrive |
| Custom Cut-Out Panel | White, Red, Infrared | Dimensions on request, dependent on application | Continuous or Strobe/Overdrive |
Dimensions and optical windows shown are generic and given as typical ranges. Exact figures depend on the configuration selected — available on request from our engineering team.
Optical Beam Pattern Visualization
Select a beam type to see how the light behaves in cross-section at working distance.
See our overdrive calculation guide to optimize this product's intensity, and our standard M12 pinout for its electrical integration. Replacing a reference from another brand? See our brand equivalence and dual sourcing table to find the compatible alternative.
Technical Documents
Request Specifications & a Quote
Tell us your application and one of our engineers will recommend the right configuration within 24 business hours.
Integration & Compatibility Guides
Not Sure About the Optical Result?
Borrow a demo kit to test on your own bench, or send us a sample of your part for a free contrast analysis in our lab.
Test on Sample or Borrow Equipment