ffOptik® is our high-performance software package for designing free-form optics.

ffOptik® lets you design free-form lenses and reflectors for an arbitrary distribution of light on a target.

This applies to lighting streets or buildings just as well as to illuminating tiny spaces such as for scanning devices, touch switches or head-up displays.

Whether your problem is a homogeneous light distribution or the highly irregular distribution of your company logo - ffOptik® is the tool of choice.

ffOptik® is not a simulation program, instead it finds an exact solution by solving a differential equation whose result is a unique optical free-form surface.

A single optical surface can either guarantee a desired distribution of light on a target or a desired distribution of the direction of rays in the target.

With two simultaneously calculated free-form surfaces both, amount of light and ray direction in the target can be determined.

ffOptik Gui


Tailored freeform optical surfaces [J. Opt. Soc. Am. A/Vol. 19, No. 3 / March 2002]

Seminal paper by Harald Ries, CEO ffOptik GmbH

Optikdesign mit maßgeschneiderten Freiformflächen [Optik & Photonik, Volume 7, Issue 3, 2002]

Article (in German) by Harald Ries, CEO ffOptik GmbH
with many examples & illustrations

Tailored freeform optical surfaces for illumination [Proc. SPIE Vol. 4442 (2001)]

Conference: Proc. SPIE, At San Diego, Ca, by Harald Ries, CEO ffOptik GmbH

Boundary conditions for balancing light in tailoring freeform surfaces [Proc. SPIE 8170, Illumination Optics II, 817002 (September 20, 2011)]

Conference Proceedings Article by Harald Ries, CEO ffOptik GmbH


United States Patent Application 20150224919

ffOptik Introduction Tutorial

A video tutorial to get started with ffOptik®.
This is based on ffTOP, the predecessor of ffOptik®. We'll update this soon.


ffOptik can be licensed on a yearly basis. Alternatively we offer a perpetual license.

We also offer consulting for projects. From street lighting, headlights and surgical lighting to architectural lighting and aircraft interior lighting our optic designers have successfully guided companies worldwide to bring their products to series production.

Email us at: contact (at)
and we will get in touch with you.


Represented by Prof. Dr. Harald Ries
Blütenstrasse 8
80799 Munich
Phone: +49 16093803445
E-mail: contact(@)

Commercial Register: Munich Registration Court, HRB 225526
Tax ID number: DE306524704

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Although the contents of this website were carefully researched and compiled, we cannot assume any liability for the accuracy, completeness or topicality of the presented information.

Since the contents of other internet pages referred to on our site are not controlled by us, we cannot assume any liability for the contents of these external links. We explicitly dissociate from illegal contents of external links. Furthermore, it is possible that the website of ffOptik may be linked by hyperlink to another site by a third party with or without our knowledge. We assume no responsibility for representation, contents or connection to ffOptik in websites of third parties.

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