LED Bar Lights for Machine Vision
Linear LED bar lights delivering uniform, high-output illumination across a wide flat field — the workhorse lighting format for line-scan and area-scan inspection.
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Industrial Machine Vision Bar Lighting: Principles and Advantages
What Is an LED Bar Light Used For?
A bar light is a linear array of LEDs behind an optical diffuser, mounted at a direct or grazing angle to illuminate a flat or gently curved field of view. It's the default choice for conveyor-line inspection, label and print verification, and any application needing even illumination across a wide, elongated area — where a dome light would be used instead for reflective or curved parts, and a coaxial light for specular, mirror-like surfaces.
Angle of incidence equals angle of reflection — the geometry behind every direct lighting setup.
Technical Highlights
- Industrial design: aluminum body for heat dissipation, integrated M12 connector for a standardized wiring harness.
- Hardened 24VDC electronics built for continuous production-line duty.
- Uniform light output across the full bar length via an opal diffuser, minimizing hot spots.
- Multiple LED wavelength options: White, Red, Blue, Infrared (availability depends on configuration).
- Compatible with continuous and strobe/overdrive operation for high-speed lines.
Range Specifications & Variants
Every bar light in the range is configured from the parameters below to match your application and camera.
| Characteristic | Available Variants |
|---|---|
| Available Lengths | 100 mm · 200 mm · 300 mm · 450 mm · 600 mm |
| Wavelengths / Colors | Red (630 nm) · Infrared (850 nm) · White (5700 K) · Blue (470 nm) · UV (365 nm / 395 nm) |
| Operating Modes | Continuous 24V DC · Strobe Overdrive (up to x5 intensity) |
| Ingress Protection | IP65 (Standard) · IP69K (Stainless Food-Grade Option) |
| Connector | M12 male, 5-pin (standardized wiring) |
The 3 Flagship Series
Pick the series matched to your line speed and environment, then request the datasheet or the 3D model.
BAR-STD Series: Standard 24V LED Bar Light
Ideal for presence detection, code reading and standard grazing illumination.
BAR-PWR Series: Overdrive LED Bar Light
Built for high-speed lines and short exposure times (< 1 ms).
BAR-INOX Series: IP69K 316L Stainless LED Bar Light
For washdown, chemical, healthcare and food-processing environments.
Not sure which length or wavelength fits your camera?
Send us your parts — our engineers test the optimal bar light on your application in the lab and send back results within 48h.
Test on Your Parts — 48h Turnaround| Light Field / Beam Type | Wavelength Options | Typical Optical Window | Operating Mode |
|---|---|---|---|
| Standard Direct Beam | White, Red, Blue, Infrared | From 50mm to 500mm active length (configuration dependent) | Continuous or Strobe/Overdrive |
| Wide Diffuse Beam | White, Red, Infrared | From 50mm to 500mm active length (configuration dependent) | Continuous or Strobe/Overdrive |
| Narrow Focused Beam | White, Red, Blue, Infrared | From 50mm to 500mm active length (configuration dependent) | 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.
Optical Contrast Simulator: Pick the Right Wavelength
Select a light color and a sample to see how wavelength choice reveals — or hides — a feature for the camera.
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