Line Lasers
Line lasers in red, green and blue
Line lasers – also called stripe lasers or line laser modules – are industrial lasers that expand a collimated beam into a bright, sharp laser line via a line-generating optic. They serve as a visual reference for alignment, component positioning, machine adjustment, cut-line projection on circular and band saws, floor marking, flow visualisation and millimetre-precise setup in industry, engineering and research.
Lasershop carries line lasers in red (635 nm), green (520 nm), blue (450 nm) and infrared – as compact single modules, ready-to-use kits with mount and power supply, and high-power versions up to 750 mW for daylight applications. Line length, projection angle and supply voltage (5 V, 12 V, 24 V) are freely configurable; IP65/IP67 housings withstand dust and water. Manufactured at the MediaLas facility in Germany; custom OEM variants on request.
Hybrid line laser module 40 mW BLUE, 12 - 28 VDC, adjustable focus, insulated
Line laser module 5 mW GREEN, 12 - 30 VDC, adjustable focus, insulated
Line laser set BRIGHT RED 10 mW, adjustable, incl. mount
Frequently asked questions about line lasers
Line lasers in red, green and blue: frequently asked questions
Answers about color selection for industrial applications in our line laser category.
At a distance of 1 m, the following lengths result (12-mm modules):
| Angle | Distance | Line length approx. |
|---|---|---|
| 10° | 1 m | 17 cm |
| 20° | 1 m | 35 cm |
| 30° | 1 m | 54 cm |
| 35° | 1 m | 63 cm |
| 45° | 1 m | 83 cm |
| 60° | 1 m | 116 cm |
| 70° | 1 m | 140 cm |
| 90° | 1 m | 200 cm |
| 110° | 1 m | 300 cm |
The line length increases linearly with distance; at a distance of 2 m, these values double.
Stranded wires (standard) – open red/black wires, approx. 100–200 mm length, for direct connection to microcontrollers or driver boards.
Barrel connector – 5.5 / 2.1 mm standard barrel plug, approx. 200 mm cable, for operation with a 230 VAC plug-in power supply.
Flexible cable with ferrules – approx. 100 cm flexible cable for direct connection to a 12–25 VDC machine controller. Reverse-polarity protection is integrated in the DC variant.
On request we also supply M8 / M12 connectors with custom cable lengths. The DC variant is particularly suited for retrofitting existing machines without 230 V wiring.
Line length: The longer the line, the lower the brightness, as the light output is spread over a larger area
Laser color: Green appears significantly brighter than red or blue
Work surface: The darker and more matte the surface, the darker the light appears
Ambient brightness: The brighter the ambient light, the darker the laser line appears. This is due to the human eye, which reduces its sensitivity depending on the ambient brightness. In direct sunlight, it is very difficult to see a laser line because the retina is already saturated.
Laser power: The higher the laser power, the brighter the laser line
Wavelength in detail: The wavelength determines how visible the line is on your surface. Red (650 nm) is the lowest-cost option and sufficient in moderately lit indoor environments. Light red (635 nm) appears noticeably brighter than 650 nm at the same power. Green (520 / 532 nm) is the most universal choice – the human retina is most sensitive in the green spectral range, so green lines appear roughly 5–7× brighter than red at equal power. Blue (450 nm) delivers high contrast on greenish surfaces, where red and green fade into the background.