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Micro Fresnel lenslets
Customized micro Fresnel lenslets may support your illumination application. Fraunhofer IOF generates Fresnel lenslets by grayscale photolithography with quasi continuous surface profile. We offer Fresnel lenslets in fused silica, Si, or Ge for applications from UV to MIR or as polymer on glass
Fresnel lens-like DOE
Fresnel lens-like DOE
TECHNICAL SERVICE
Fraunhofer-Institute for Applied Optics and Precision Engineering IOF
Wafer-scale
[OPTICAL ELEMENTS] grayscale photolithography - maskless [OPTICAL ELEMENTS] dry etching [REPLICATION] UV-NIL replication
AR/VR Automotive Consumer electronics Healthcare & Life sciences Lighting Optical instrumentation Transportation Other

Lithographic mastering with grayscale photolithography for
- prototyping + tech transfer
- small series
- transfer master for customer replication technology

- lens function (Zemax(R)) or surface description (grayscale bitmap or ASCII)
- number of elements needed 
- material (criteria, i.e. environmental stability issues, wavelength, laser power, price)
- antireflection coating

Fresnel lenslets in fused silica
Fresnel lenslets in fused silica