Free-Form Optics

Products and Services Free-Form Optics

Design of Highly Efficient Free-Form Optics for LED Applications

  • General and architectural lighting
  • Tailored illumination geometries
  • (Industrial / manufacturing) process illumination
  • Automotive lighting
  • Fiber coupling

Development of Prototypes

  • Virtual prototyping
  • Preparation of optics design data for manufacturing

Photometry for Illumination Applications

  • Measurement of luminance and illuminance
  • Single-shot measurement of luminous intensity distribution curves
  • Comparison of measurement and simulation


Hopmann, C., Brecher, C., Loosen, P., Röbig, M., Meiers, B., Berens, M.:
Mit Kunststoff in die optische Zukunft
Kunststoffe 2014 (10), 154-159 (2014)

Wester, R., Müller, G., Völl, A., Berens, M., Stollenwerk, J., Loosen, P.:
Designing optical free-form surfaces for extended sources
Opt. Expr. 22, (S2), A552-A560 (2014)

Bruneton, A., Bäuerle, A., Wester, R., Stollenwerk, J., Loosen, P.:
Limitations of the ray mapping approach in freeform optics design
Opt. Lett. 38 (11), 1945-1947 (2013)

Bruneton, A., Bäuerle, A., Wester, R., Stollenwerk, J., Loosen, P.:
High resolution irradiance tailoring using multiple freeform surfaces
Opt. Expr. 21, Nr. 9, 10563-10571 (2013)

Wester, R., Bäuerle, A.:
Light shaping for illumination
Adv. Opt. Technol. 2 (4),301-311 (2013)

Bäuerle, A., Bruneton, A., Westerm R., Stollenwerk, J., Loosen, P.:
Algorithm for irradiance tailoring using multiple freeform optical surfaces
Opt. Expr. 20, Nr. 13, 14477-14485 (2012)

Bruneton, A., Bäuerle, A., Traub, M., Wester, R., Loosen, P.:
Irradiance tailoring with two-sided, Fresnel-type freeform optics
In: Nonimaging Optics: Efficient Design for Illumination and Solar Concentration IX, San Diego, California, USA , August 12, 2012. Proc. SPIE  8485, 1-7 (2012)

Wester, R.,  Bruneton, A., Bäuerle, A.,  Stollenwerk, J.,  Loosen, P.:
Irradiance tailoring for extended sources using a point-source freeform design algorithm
Optical Systems Design 2012. Barcelona, Spain, November 26, 2012. Proc. SPIE  8550, 85502 

Bäuerle, A., Schnitzler, C., Wester, R., Kirsten, M., Schlüter, H., Tewes, M., Laschefski, H., Loosen, P.:
Optical system design for a reflector-based LED food lighting module. 
Proc. SPIE 8123, 812306 (7 S.), 2011

Bruneton, A., Bäuerle, A., Loosen, P., Wester, R.:
Freeform lens for an efficient wall washer. 
Proc. SPIE 8167, 816707 (9 S.), 2011

Bäuerle, A., Wester, R., Schnitzler, C., Loosen, P.
Design of efficient freeform lenses for mass-market illumination applications using hybrid algorithms
Proc. SPIE 7788, 778807 (10 S.)