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Newsletter 17 | March 2018


It's time again: From 18-23 March the Light + Building 2018 opens its doors in Frankfurt am Main. More than 210.000 visitors are expected to the world's leading fair for lighting and building services. Inspiring new ideas related to lighting and lighting components are presented on our booth featuring glass optics for RGBW, High-Power LEDs, and Laser applications as well as optical coatings on plastics. Come and see us, our team of experts is looking forward to your visit!


Auer Lighting Sales Team

One lens to wash it all

“Washing” a wall with light is kind of an art and is often used for atmospheric illumination and stunning effects. Now, it’s becoming easier with the help of Auer’s tailored lens design.
First: what does “wall washing” mean? On many occasions lighting designers or interior specialists like to  illuminate walls with a uniform light distribution, sometimes in lateral and height, sometimes only in one dimension. Since local conditions often offer limited space lighting fixtures have to be mounted in close vicinity to the wall. This results in extreme angular requirements. As an example, if a fixture is placed on the ceiling, at a distance of 0.5 m to a wall of 3 m height, it has to be tilted down. Doing so with a typical spot light would however result in an non-symmetrically illuminated surface of the wall. So, more efforts have to be put into the optical design. This allows for illuminated areas on the wall that show nice brightness homogeneity.
In a recent project with one of our customers, Auer had the task to design an optical solution that was able to illuminate a 3 m high wall from a distance of 90 cm. A usual spot would have looked like this:

We used our own, GPU-driven optimization algorithms to derive a better solution for this task. The result is a lens of 20 · 20 mm2 size that is placed in front of a small LED with 1.5 mm die size. The non-rotationally symmetric light distribution is achieved with a freeform lens. The faceted front structure enables both a highly controlled light emission and also a smoothing of the resulting illuminance distribution.
The stackable design allows for the mounting of arrays of optics to obtain the overall brightness level as desired. As a result, a beautiful and homogenous light intensity distribution with an overall efficiency of about 70 % is obtained.

Of course also non-square light distributions with non-homogenous illuminance can be tailored according to your requirements.
Interested in details? Please feel free to visit our talk at the SPIE Optical Systems Design
(Talk 10693-7:

Contact us to learn more.

Fact of the month

It's all about performance: the thickness of our coatings is between 2 nm and 6 µm.

Upcoming Fairs

Light+Building 2018
Messe Frankfurt
Frankfurt am Main, Germany
March 18 – 23, 2018
Stand 4.1 H11

GET Show 2018
Poly World Trade Center Expo
Guangzhou, China
May 08 – 11, 2018
Hall 6, Stand 6F-01A

Optatec 2018
Messe Frankfurt
Frankfurt, Germany
May 15 – 17, 2018
Hall 3.0, Stand G14

Outlook to Newsletter 18

Plastics refined

Auer Lighting GmbH

Hildesheimer Straße 35
37581 Bad Gandersheim

Phone +49 (0) 5382 701-0
Fax +49 (0) 5382 701-297

Local Court: Braunschweig HR B 200937

Management Board:
Dr. Dieter Simon (Chairman)
Christoph Schüller

USt-Id-No.: DE 814867843

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