Fraunhofer Institute for Applied Optics and Precision Engineering IOFThin UV-molded polymer layers with molded micro-/nanooptical structures on glass or semiconductor substrates unite high precision and stability with cost-effective processing and customized properties.
There is longstanding experience and extensive equipment at Fraunhofer IOF for:
- Processing UV-cured acrylates and epoxides in mask aligners with UV molding option
- Using anorganic-organic hybrid polymers (e.g. ORMOCER® elements from the Fraunhofer Institute for Silicate Research ISC in Würzburg)
- Selecting and modifying polymer resins to achieve specific optical and stability properties in the produced elements, e.g.:
- Diffraction index and dispersion, achromatization
- Index profiles, optical homogeneity
- Thermo-optical coefficient
- High spectral transparency (e.g. for laser/LED application)
- Bond strength, temperature stability, moisture stability, yellowing resistance
- Compatibility with plasma-supported coating, sawing, bonding, soldering etc.
- Viscosity etc., processing capability
- Measurement/investigation of the above properties and typical component parameters before and after stability testing
Sample applications
- Arrays of achromatic doublets in a microoptical close-up system
- Diffractive ORMOCER® elements for use in high-performance laser diode bars