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Spectrum Illumination

3" x 4" Red LED Backlight

Price: $650.00 each

Not available for purchase outside of North America.

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3" x 4" red backlight
12 LEDs per square inch
Includes cable with quick disconnect
3 year limited warranty

This is a quality 3" x 4" backlight manufactured by Spectrum Illumination. It is typically used to image objects in silhouette for measurement applications and feature presence detection. It can also be used as a low-intensity diffuse front light.

The light includes a white diffuser, quick-disconnect connector, and a 4 meter cable as standard. This light may be operated in continuous or strobe mode. If used in continuous mode, the light should be mounted against a metal structure to provide additional heat dissipation.

Please contact us if you're interested in a different diffuser material, a longer cable, or a custom size light.


Power: 300 mA max @ 24 VDC
Strobe: +5 to +24 VDC enables light


Window: White Diffuser
Window Size: 102 x 76 mm (4.0" x 3.0")
Window Options: Optional diffusers: Clear cover, thin film diffuser, linear polarizer, distortion diffuser, or light-collimating film


Type: Backlight
Wavelength: 660 nm typical (Red)


Cable Length: 4.0 m (13.1 ft)
Cable Options: Optional cable lengths: 8, 15, or 30 meters, or 4, 8, or 15 meter high-flex cable