Lights

Line scan lights

Line scan lights put a narrow, very bright and uniform line on moving web, sheet and conveyor inspection for line-scan cameras. Choose cooling by duty and brightness: passive, fan or water cooled, plus coaxial and dual-angle versions.

Shop by colour: Red line scan lights · Blue line scan lights · Green line scan lights · White line scan lights · Infrared line scan lights · UV line scan lights

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Line scan lights

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Products

  • 340 mm Mini Line Scan Light

    LS-LSC-0370

    • Colour Red, Green, Blue, White
    • Emitting area 340x10 mm
    • Size 350x21x34 mm

    $699.00

    Ships in 2-3 weeks

  • 300 mm Mini Line Scan Light

    LS-LSC-0369

    • Colour Red, Green, Blue, White
    • Emitting area 300x10 mm
    • Size 310x21x34 mm

    $629.00

    Ships in 2-3 weeks

  • 250 mm Mini Line Scan Light

    LS-LSC-0368

    • Colour Red, Green, Blue, White
    • Emitting area 250x10 mm
    • Size 260x21x34 mm

    $549.00

    Ships in 2-3 weeks

  • 234 mm Mini Line Scan Light

    LS-LSC-0367

    • Colour Red, Green, Blue, White
    • Emitting area 234x10 mm
    • Size 244x21x34 mm

    $519.00

    Ships in 2-3 weeks

  • 225 mm Mini Line Scan Light

    LS-LSC-0366

    • Colour Red, Green, Blue, White
    • Emitting area 225x10 mm
    • Size 235x21x34 mm

    $509.00

    Ships in 2-3 weeks

  • 200 mm Mini Line Scan Light

    LS-LSC-0365

    • Colour Red, Green, Blue, White
    • Emitting area 200x10 mm
    • Size 210x21x34 mm

    $469.00

    Ships in 2-3 weeks

  • 150 mm Mini Line Scan Light

    LS-LSC-0364

    • Colour Red, Green, Blue, White
    • Emitting area 150x10 mm
    • Size 160x21x34 mm

    $379.00

    Ships in 2-3 weeks

  • 120 mm Mini Line Scan Light

    LS-LSC-0363

    • Colour Red, Green, Blue, White
    • Emitting area 120x10 mm
    • Size 130x21x34 mm

    $319.00

    Ships in 2-3 weeks

  • 100 mm Mini Line Scan Light

    LS-LSC-0362

    • Colour Red, Green, Blue, White
    • Emitting area 100x10 mm
    • Size 110x21x34 mm

    $279.00

    Ships in 2-3 weeks

  • 60 mm Mini Line Scan Light

    LS-LSC-0361

    • Colour Red, Green, Blue, White
    • Emitting area 60x10 mm
    • Size 70x21x34 mm

    $209.00

    Ships in 2-3 weeks

  • 900 mm Coaxial Line Scan Light

    LS-LSC-0319

    • Colour Red, Green, Blue, White
    • Emitting area 900x20 mm
    • Size 930x50x137.3 mm

    $3,639.00

    Ships in 2-3 weeks

  • 700 mm Coaxial Line Scan Light

    LS-LSC-0318

    • Colour Red, Green, Blue, White
    • Emitting area 700x20 mm
    • Size 730x50x137.3 mm

    $2,889.00

    Ships in 2-3 weeks

  • 600 mm Coaxial Line Scan Light

    LS-LSC-0317

    • Colour Red, Green, Blue, White
    • Emitting area 600x20 mm
    • Size 630x50x134.3 mm

    $2,509.00

    Ships in 2-3 weeks

  • 400 mm Coaxial Line Scan Light

    LS-LSC-0316

    • Colour Red, Green, Blue, White
    • Emitting area 400x20 mm
    • Size 430x50x134.3 mm

    $1,749.00

    Ships in 2-3 weeks

  • 300 mm Coaxial Line Scan Light

    LS-LSC-0315

    • Colour Red, Green, Blue, White
    • Emitting area 300x20 mm
    • Size 330x50x134.3 mm

    $1,379.00

    Ships in 2-3 weeks

  • 250 mm Coaxial Line Scan Light

    LS-LSC-0314

    • Colour Red, Green, Blue, White
    • Emitting area 250x20 mm
    • Size 280x50x134.3 mm

    $1,189.00

    Ships in 2-3 weeks

  • 200 mm Coaxial Line Scan Light

    LS-LSC-0313

    • Colour Red, Green, Blue, White
    • Emitting area 200x20 mm
    • Size 230x50x134.3 mm

    $999.00

    Ships in 2-3 weeks

  • 150 mm Coaxial Line Scan Light

    LS-LSC-0312

    • Colour Red, Green, Blue, White
    • Emitting area 150x20 mm
    • Size 180x50x134.3 mm

    $809.00

    Ships in 2-3 weeks

  • 100 mm Coaxial Line Scan Light

    LS-LSC-0311

    • Colour Red, Green, Blue, White
    • Emitting area 100x20 mm
    • Size 130x50x134.3 mm

    $619.00

    Ships in 2-3 weeks

Compare
LS-LSC-0370340 mm Mini Line Scan Light Red, Green, Blue, White340x10 mm350x21x34 mm24 V$699.00 Ships in 2-3 weeks
LS-LSC-0369300 mm Mini Line Scan Light Red, Green, Blue, White300x10 mm310x21x34 mm24 V$629.00 Ships in 2-3 weeks
LS-LSC-0368250 mm Mini Line Scan Light Red, Green, Blue, White250x10 mm260x21x34 mm24 V$549.00 Ships in 2-3 weeks
LS-LSC-0367234 mm Mini Line Scan Light Red, Green, Blue, White234x10 mm244x21x34 mm24 V$519.00 Ships in 2-3 weeks
LS-LSC-0366225 mm Mini Line Scan Light Red, Green, Blue, White225x10 mm235x21x34 mm24 V$509.00 Ships in 2-3 weeks
LS-LSC-0365200 mm Mini Line Scan Light Red, Green, Blue, White200x10 mm210x21x34 mm24 V$469.00 Ships in 2-3 weeks
LS-LSC-0364150 mm Mini Line Scan Light Red, Green, Blue, White150x10 mm160x21x34 mm24 V$379.00 Ships in 2-3 weeks
LS-LSC-0363120 mm Mini Line Scan Light Red, Green, Blue, White120x10 mm130x21x34 mm24 V$319.00 Ships in 2-3 weeks
LS-LSC-0362100 mm Mini Line Scan Light Red, Green, Blue, White100x10 mm110x21x34 mm24 V$279.00 Ships in 2-3 weeks
LS-LSC-036160 mm Mini Line Scan Light Red, Green, Blue, White60x10 mm70x21x34 mm24 V$209.00 Ships in 2-3 weeks
LS-LSC-0319900 mm Coaxial Line Scan Light Red, Green, Blue, White900x20 mm930x50x137.3 mm48 V$3,639.00 Ships in 2-3 weeks
LS-LSC-0318700 mm Coaxial Line Scan Light Red, Green, Blue, White700x20 mm730x50x137.3 mm48 V$2,889.00 Ships in 2-3 weeks
LS-LSC-0317600 mm Coaxial Line Scan Light Red, Green, Blue, White600x20 mm630x50x134.3 mm48 V$2,509.00 Ships in 2-3 weeks
LS-LSC-0316400 mm Coaxial Line Scan Light Red, Green, Blue, White400x20 mm430x50x134.3 mm48 V$1,749.00 Ships in 2-3 weeks
LS-LSC-0315300 mm Coaxial Line Scan Light Red, Green, Blue, White300x20 mm330x50x134.3 mm48 V$1,379.00 Ships in 2-3 weeks
LS-LSC-0314250 mm Coaxial Line Scan Light Red, Green, Blue, White250x20 mm280x50x134.3 mm48 V$1,189.00 Ships in 2-3 weeks
LS-LSC-0313200 mm Coaxial Line Scan Light Red, Green, Blue, White200x20 mm230x50x134.3 mm48 V$999.00 Ships in 2-3 weeks
LS-LSC-0312150 mm Coaxial Line Scan Light Red, Green, Blue, White150x20 mm180x50x134.3 mm48 V$809.00 Ships in 2-3 weeks
LS-LSC-0311100 mm Coaxial Line Scan Light Red, Green, Blue, White100x20 mm130x50x134.3 mm48 V$619.00 Ships in 2-3 weeks

How to choose a line scan light

A line scan camera builds its image one row of pixels at a time while the web or part moves past. It needs light only on a narrow stripe, but that stripe must be very bright, because each line is exposed for microseconds, and very even along its length, because any dip shows up as a streak through every image. A line scan light has a long, narrow emitting window, often with a lens that focuses the LEDs into a thin, intense line.

1. Length: cover the scan line plus margin

The lit length must be longer than the field of view the camera sees across the web. Brightness falls off over the last few centimetres at each end, so add margin on both sides - roughly 10% of the field width, or more when the light sits far from the part. Lengths here run from short units of under 100 mm for narrow parts and lab setups to bars of 2 m and more for full-width web inspection; several ranges come in fixed steps (for example 75 mm or 150 mm increments), so you can match the web width closely.

2. Brightness: work back from the line rate

The exposure time of a line scan camera is at most the line period: at 50 kHz a line has 20 µs. Use the line rate calculator to get the line rate from web speed and pixel size, then pick a light that gives enough signal in that time. Focused (condensing) versions put the LED output into a narrow line and give the highest brightness at their focal distance; diffuse versions spread the light and tolerate height changes better. Electrical power in this category runs from a few watts for mini lights to several hundred watts for long high-power bars, and the highest-power models are fan or water cooled.

3. Lighting geometry

  • Bright field (specular): light and camera at equal and opposite angles to the surface. Shiny surfaces look bright; scratches and dents look dark.
  • Dark field (oblique): light at a low angle and camera looking straight down. A flat surface stays dark and raised or broken features scatter light into the lens.
  • Coaxial line light: the camera looks through a half-mirror along the light axis. For flat, mirror-like webs such as foil, glass and wafers - the line scan version of a coaxial light.
  • Tunnel, double-angle and multi-angle: light from two or more directions to fill in shadows on embossed, curved or textured material.
  • Transmitted: light under the web shining up into the camera, for holes, pinholes, coating gaps and contamination in film, nonwovens and glass.

4. Colour and wavelength

White suits colour line scan cameras. On mono cameras a single colour gives more contrast: red for general use and long LED life, blue for fine surface detail on metal, green as a compromise, UV to excite fluorescent inks, adhesives and coatings, infrared to see through some dyes and printing. A few models emit in the SWIR band for SWIR line scan cameras.

5. Driving, strobing and cooling

Line scan lights here run on 24 V DC or, for many of the longer and high-power bars, 48 V DC, so check which before choosing a light controller. The controller must supply the full power of the bar with margin; long bars may have two cables. Some ranges include an inline driver with analog dimming and overcurrent strobe from a PNP or NPN trigger. Fan- and water-cooled versions need airflow or a water supply.

What this category covers

ParameterRange in this category
Lit lengthunder 100 mm to over 2 m (several series to about 3 m)
Emitting widthcommonly 10-28 mm; wider tunnel and area versions
Colourswhite, red (625 / 660 nm), blue (455 / 470 nm), green (520-530 nm), UV (365 / 395 nm), IR (730 / 808 / 850 / 940 nm), RGB, SWIR on a few models
Supply24 V DC or 48 V DC
Coolingnatural, fan or water
Typesstandard, high power, high uniformity, focused, collimated, polarized, coaxial, oblique, tunnel, multi-angle

Browse white line scan lights or infrared line scan lights.

Typical applications

  • Surface defects on steel, aluminium and copper strip, foil and battery electrode coatings.
  • Print inspection on labels, packaging film and printed sheet.
  • Glass, display panels and film: scratches, bubbles, inclusions, using bright field or transmitted light.
  • Nonwovens, paper and textiles: holes, thin spots and contamination with a light under the web.
  • Cylindrical parts rotated under the camera to unroll the surface into one flat image.

Common mistakes

  • Choosing the lit length equal to the field of view: the image ends go dark and the edge of the web is missed.
  • Mounting a focused light at the wrong distance. The line is only thin and bright near its focal distance; a few millimetres off and brightness drops sharply.
  • Sizing brightness for an area scan exposure. A line scan exposure is microseconds, not milliseconds.
  • Ignoring flicker from PWM dimming that is not synchronised to the camera, which shows as bands across the image. Use a constant-current or strobed controller synchronised to the line trigger.
  • Not running flat-field correction in the camera after the light is installed, so residual non-uniformity stays in every image.

Questions

Can I use a bar light instead of a line scan light?
For slow lines and short fields, a bar light can work. For high line rates the narrow, focused output of a line scan light puts much more of its output on the scan line from the same power.

Focused or diffuse?
Focused for the most brightness on flat material at a fixed distance. Diffuse when the surface is shiny and wrinkled, or the material height changes, since a diffuse line is less sensitive to distance and angle.

How far from the web should the light sit?
Use the recommended working distance printed on the product page. Where stated, recommended distances in this category run from about 10-30 mm for compact units to 10-500 mm for large high-power bars.

What else does a line scan station need?
A line scan camera, a line scan lens that covers the sensor length, an encoder trigger and a controller. Configure the system to match them.