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VL-TNL Tunnel Light for Special Applications (up to 1000mm)

Indirect Illumination for Reflective and Textured Surfaces in High-Speed Applications
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VL-TNL HOW TO USE
VL-TNL DIMENSIONS
VL-TNL ELECTRICAL CONNECTION

Product Description

The FÖGE VL-TNL Tunnel Light delivers high-performance diffuse lighting designed for inspecting shiny, angled, or coarse-surfaced parts with areascan or linescan cameras. Utilizing a dome-style internal geometry, light is reflected off a silky-painted internal surface before illuminating the target—minimizing glare and delivering uniform, shadow-free light. Unlike direct lighting methods that can create reflections or uneven brightness, tunnel lighting ensures visibility of critical features like labels, marks, logos, print defects, and surface irregularities, even on highly reflective surfaces. With robust mechanical design, heat-proof electronics, and trigger-ready control options, VL-TNL is an ideal solution for food, packaging, wood, whitegoods, and industrial product inspections.

Advantages

Enables accurate inspection of challenging surfaces, such as glossy or irregular materials
Versatile camera compatibility for both wide and linear imaging
Optimized for fast-paced industrial environments with robust and thermally stable design
Reduces setup time and operator adjustment with consistent lighting coverage
Supports process automation with precise trigger controls
Improves inspection accuracy by eliminating glare
Enhances defect detection on metal, plastic, wood, or packaged goods
Reduces false readings or missed details on curved or shiny parts
Integrates seamlessly into inspection systems with areascan or linescan cameras
Ensures long-term operation with stable, heat-resistant electronics
Request a Quote
Download Datasheet

Product Description

The FÖGE VL-TNL Tunnel Light delivers high-performance diffuse lighting designed for inspecting shiny, angled, or coarse-surfaced parts with areascan or linescan cameras. Utilizing a dome-style internal geometry, light is reflected off a silky-painted internal surface before illuminating the target—minimizing glare and delivering uniform, shadow-free light. Unlike direct lighting methods that can create reflections or uneven brightness, tunnel lighting ensures visibility of critical features like labels, marks, logos, print defects, and surface irregularities, even on highly reflective surfaces. With robust mechanical design, heat-proof electronics, and trigger-ready control options, VL-TNL is an ideal solution for food, packaging, wood, whitegoods, and industrial product inspections.

Advantages

Enables accurate inspection of challenging surfaces, such as glossy or irregular materials
Versatile camera compatibility for both wide and linear imaging
Optimized for fast-paced industrial environments with robust and thermally stable design
Reduces setup time and operator adjustment with consistent lighting coverage
Supports process automation with precise trigger controls
Improves inspection accuracy by eliminating glare
Enhances defect detection on metal, plastic, wood, or packaged goods
Reduces false readings or missed details on curved or shiny parts
Integrates seamlessly into inspection systems with areascan or linescan cameras
Ensures long-term operation with stable, heat-resistant electronics
Request a Quote
Download Datasheet
TNL

Why You Should Choose This Product

The VL-TNL Tunnel Light is a powerful, flexible lighting solution for visual inspection tasks where direct lighting fails. Its indirect lighting technique makes even glossy, textured, or angled parts appear smooth and readable, helping operators and vision systems detect details that would otherwise be lost. With camera-adaptable design, industrial-grade durability, and easy control via automation inputs, it becomes an essential tool in modern production lines requiring precision and reliability.
Request a Quote
Download Datasheet

Key Features

01

Indirect Dome Geometry Lighting

Light is reflected before hitting the object, eliminating glare and shadows.

02

Diffuse Illumination for Shiny and Angled Surfaces

Smooths out reflective distortions for accurate visual inspection.

03

Options for Areascan and Linescan Cameras

Round hole for areascan; rectangular slot for linescan applications.

04

Industrial-Grade, Rugged Housing

Built for continuous use in demanding production environments.

05

Heat-Proof, Current-Driven LED System

Ensures stable brightness and extended service life.

06

NPN & PNP Trigger Support

Seamless integration with PLCs, sensors, and machine controllers.

FÖGE VL-TNL

Advantages

Improves inspection accuracy by eliminating glare
Enhances defect detection on metal, plastic, wood, or packaged goods
Reduces false readings or missed details on curved or shiny parts
Integrates seamlessly into inspection systems with areascan or linescan cameras
Ensures long-term operation with stable, heat-resistant electronics
Request a Quote
Download Datasheet

Applications

Food Packaging Inspection
Printed Label and Logo Validation
Defect Detection on Reflective Whitegoods or Enclosures
Inspection of Wooden Boards or Surfaces with Grain
Linescan Inspection in High-Speed Conveyor Systems
Surface Print and Marking Check on Coated or Lacquered Products
VL-TNL_Application_Examples

Wondering how your shiny or rough-surfaced products will look under VL-TNL lighting?

Book a demo or request an on-site trial to see how tunnel lighting transforms visibility—right in your factory.
Request a Quote
Download Datasheet

General Specifications

Product code Color Dimensions (mm) Power Consumption Wavelength Datasheet
VL-BAL-25-400-R-24-C30
Red
25 x 400
–
621nm
Download
VL-BAL-25-400-W-24-C30
White
25 x 400
–
6500K
Download
VL-BAL-25-400-G-24-C30
Green
25 x 400
–
528nm
Download
VL-BAL-25-400-B-24-C30
Blue
25 x 400
–
470nm
Download
VL-BAL-25-400-I-24-C30
Infrared
25 x 400
–
940nm
Download
VL-BAL-25-500-R-24-C30
Red
25 x 400
–
621nm
Download

Parameter

Specification

  1. Supply voltage
    24 VDC
  2. Variants
    Type B (VL-TNA) – Area scan, round camera aperture · Type C (VL-TNL) – Line scan, rectangular groove
  3. Available sizes
    200×250 / 200×500 / 300×250 / 300×500 / 400×250 / 400×500 mm (W × L)
  4. Colors
    Red (625 nm) · White (6500 K)
  5. Lighting type
    Indirect tunnel – linear effect on a cloudy day
  6. Trigger input
    NPN und PNP
  7. control circuit
    Constantstrom
  8. LEDs
    High flux, narrow wavelength tolerance
  9. Power Consumption
    13 W (red, short) – 40 W (white, long), see product table
  10. IP protection rating
    Protection class IP50 · IP67 option available
  11. Connector
    M8, 4-pin, with 300 mm cable
  12. Housing material
    Aluminum (black anodized) and steel (painted white)
  13. LED Store
    120°

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Product-table

Product code Typ Color Wavelength /
Color Temp.		 Dimensions (W × L) Power Consumption IP protection rating Connector
VL-TNA-200-250-R-24-C30 Areascan Red 625 nm 200 × 250 mm 13 W IP50 M8, 4-pin, 300 mm cable
VL-TNA-200-250-W-24-C30 Areascan White 6500 K 200 × 250 mm 20 W IP50 M8, 4-pin, 300 mm cable
VL-TNA-200-500-R-24-C30 Areascan Red 625 nm 200 × 500 mm 26 W IP50 M8, 4-pin, 300 mm cable
VL-TNA-200-500-W-24-C30 Areascan White 6500 K 200 × 500 mm 40 W IP50 M8, 4-pin, 300 mm cable
VL-TNA-300-250-R-24-C30 Areascan Red 625 nm 300 × 250 mm 13 W IP50 M8, 4-pin, 300 mm cable
VL-TNA-300-250-W-24-C30 Areascan White 6500 K 300 × 250 mm 20 W IP50 M8, 4-pin, 300 mm cable
VL-TNA-300-500-R-24-C30 Areascan Red 625 nm 300 × 500 mm 26 W IP50 M8, 4-pin, 300 mm cable
VL-TNA-300-500-W-24-C30 Areascan White 6500 K 300 × 500 mm 40 W IP50 M8, 4-pin, 300 mm cable
VL-TNA-400-250-R-24-C30 Areascan Red 625 nm 400 × 250 mm 13 W IP50 M8, 4-pin, 300 mm cable
VL-TNA-400-250-W-24-C30 Areascan White 6500 K 400 × 250 mm 20 W IP50 M8, 4-pin, 300 mm cable
VL-TNA-400-500-R-24-C30 Areascan Red 625 nm 400 × 500 mm 26 W IP50 M8, 4-pin, 300 mm cable
VL-TNA-400-500-W-24-C30 Areascan White 6500 K 400 × 500 mm 40 W IP50 M8, 4-pin, 300 mm cable
VL-TNL-200-250-R-24-C30 Linescan Red 625 nm 200 × 250 mm 13 W IP50 M8, 4-pin, 300 mm cable
VL-TNL-200-250-W-24-C30 Linescan White 6500 K 200 × 250 mm 20 W IP50 M8, 4-pin, 300 mm cable
VL-TNL-200-500-R-24-C30 Linescan Red 625 nm 200 × 500 mm 26 W IP50 M8, 4-pin, 300 mm cable
VL-TNL-200-500-W-24-C30 Linescan White 6500 K 200 × 500 mm 40 W IP50 M8, 4-pin, 300 mm cable
VL-TNL-300-250-R-24-C30 Linescan Red 625 nm 300 × 250 mm 13 W IP50 M8, 4-pin, 300 mm cable
VL-TNL-300-250-W-24-C30 Linescan White 6500 K 300 × 250 mm 20 W IP50 M8, 4-pin, 300 mm cable
VL-TNL-300-500-R-24-C30 Linescan Red 625 nm 300 × 500 mm 26 W IP50 M8, 4-pin, 300 mm cable
VL-TNL-300-500-W-24-C30 Linescan White 6500 K 300 × 500 mm 40 W IP50 M8, 4-pin, 300 mm cable
VL-TNL-400-250-R-24-C30 Linescan Red 625 nm 400 × 250 mm 13 W IP50 M8, 4-pin, 300 mm cable
VL-TNL-400-250-W-24-C30 Linescan White 6500 K 400 × 250 mm 20 W IP50 M8, 4-pin, 300 mm cable
VL-TNL-400-500-R-24-C30 Linescan Red 625 nm 400 × 500 mm 26 W IP50 M8, 4-pin, 300 mm cable
VL-TNL-400-500-W-24-C30 Linescan White 6500 K 400 × 500 mm 40 W IP50 M8, 4-pin, 300 mm cable

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