BL3 Series: LED Backlight Illuminators for Machine Vision

Why Choose BL3 Series

• High-Uniformity Illumination: Perfectly diffused light ensures edge-to-edge consistency across the active area for accurate dimensional measurement and reliable high-accuracy defect detection.
• HTTM© Thermal Management: High Transmission Thermal Material conducts heat from the LED board into the aluminium frame, keeping luminous output stable and extending LED service life.
• Replaceable Diffuser Glass: The diffusion glass can be replaced if damaged or worn, reducing downtime and protecting the long-term photometric performance of the backlight.
• Rugged Aluminium Construction: A robust anodized aluminium frame ensures mechanical rigidity and heat dissipation even in large formats and demanding industrial inspection environments.
• Certified Reliability and Integration: A 48-hour burn-in test, CE and RoHS compliance and an M8 connector guarantee dependable, easy integration into automated machine-vision systems.

Their advanced optical design guarantees stable brightness across the entire surface, even in demanding production environments. Available in various sizes, wavelengths, and configurations, the BL3 series easily integrates into both new and existing machine vision setups. With durable construction, long operating life, and optional customization, the BL3 backlights deliver reliability and precision for high-quality image processing and inspection tasks.

Typical applications

• Dimensional measurement — backlit silhouette gives sharp edges for accurate part sizing and gauging
• High-precision edge detection — uniform back illumination produces crisp contours for sub-pixel edge location
• Silhouette and contour analysis — even backlight reveals the exact part outline for shape verification
• Liquid level inspection — backlighting through bottles reveals fill level and meniscus position clearly
• Particle detection in fluids — transmitted light exposes particles and inclusions in transparent liquids precisely
• Transparent material inspection — backlight reveals cracks, bubbles and inclusions in clear plastic components
• Presence and completeness check — high-contrast silhouette confirms presence, count and orientation of parts
• Sorting and counting — uniform backlight supports fast counting of small items on lines
• Pharmaceutical blister integrity — backlit inspection reveals missing tablets and seal defects in blisters
• Gap and clearance measurement — backlighting highlights gaps and tolerances between assembled components precisely
• Hole and thread verification — transmitted light confirms presence and geometry of holes and threads
• Connector and pin inspection — silhouette imaging checks pin presence, alignment and bending on connectors
• Web and film inspection — wide backlight detects pinholes and defects in transparent films
• Label and print registration — back illumination supports transmissive checks on translucent labels and packaging
• High-speed conveyor inspection — strobe-compatible backlight freezes motion for reliable inspection on fast lines

Standard Models Catalog
Additional versions available upon request

BL3 100 × 100 mm

BL3 100 × 150 mm

BL3 100 × 200 mm

BL3 100 × 250 mm

BL3 100 × 300 mm

BL3 100 × 400 mm

BL3 100 × 500 mm

BL3 150 × 200 mm

BL3 200 × 200 mm

BL3 200 × 250 mm

BL3 200 × 300 mm

BL3 300 × 300 mm

BL3 300 × 400 mm

BL3 400 × 400 mm

BL3 500 × 500 mm

Frequently Asked Questions