Machine Vision Illumination - STEMMER IMAGING


Widest choice of technologies to maximise

the visibility of your object

Phlox OA

On-axis light with exceptional uniformity and luminance

With the Phlox OA serie, Phlox offers the first coaxial light without a fan. The device combines the SLLUB backlights and half-mirrors to create an on-axis illumination with optimised homogeneity and high luminance, without the disadvantages of a cooling fan.

Reasons to choose the Phlox OA

Exceptional luminance and uniformity

The luminance of the light ranges from 2,800 to 3,500 cd/m², depending on the actual size. It provides a uniformity of over 80% (+/-10%): Phlox delivers each coaxial light with a data and distribution chart that specifies uniformity and luminance.

Available in a variety of sizes and colours

The OA covers a broad range of applications with the standard sizes provided: 50x50, 100x100 and 200x200 mm (depending on colour). It is available in white (5000°K), RGB and IR (850 and 940 nm).

Extra protection

Due to optimized thermal management, no cooling fan is required. This in turn means less maintenance and fewer breakdowns due to a failing fan component.

Extended lifetime

The Phlox OA sports an very long expected lifetime, with more than 50.000 hours.

Minimised chromaticity shift

The chromaticity shift is smaller than 10% over the complete LED lifetime. Recalibration (white balance) of the system is therefore generally not necessary, even for colour sensitive applications.


  • Type: coaxial light with high luminance and uniformity
  • Colour: white, RGB or IR (850 or 940 nm)
  • Uniformity: > 80% (+/-10%)
  • Size:  50x50, 100x100 or 200x200 mm (depending on colour)
  • Miscellaneous: passive cooling

Markets and Applications

Coaxial illuminations are suited for plain reflective, "mirror-like" objects with very little profile.