Duration: January 2016 – December 2017
Project “ESMobS” is focused on the development of solutions for imaging methods e.g. in sensors and displays, following issues will be addressed:
- Molded optical arrays with a good quality at affordable prices are not available for proposed optical imaging applications.
- Aberrations in edge areas of the optics impair the imaging quality by directly mounted optical structures on the electronics.
- Prevention of direct contact, in case of layers separated by air, will cause reflections in display or sensor optics.
- Optical simulation results suggest, GRIN (gradient index) optics can avoid the edge imaging errors and are mountable on the electronics.
- In the project, focal correction takes place in one or two anisotropic LC (liquid crystal) layers, which are mechanical stabilized by an ORMOCER® material with ITO (indium-tin-oxide) contacts.
- Optical characterization of produced micro optics in terms of wavelength dependent focal point, lateral focal correction, aberration errors, etc. will demonstrate the proposed feasibility.
The extensive experience of the Vision & Imaging Technologies department in the field of 3D-display and imaging technologies will foster development of an adaptable LC-optic for sensors and displays.
- Development of a design and manufacturing technology for combining LC-based GRIN layers of different optical properties with additional functional optical layers.
- Adaption of focal length of flat lens elements to particular imaging plane by two photon polymerization process (2PP) for GRIN optics
- Reduction of related optical aberrations and Moirés
- Improved LC layer model
- Optical simulation and ray tracing of light distribution
- 2PP-Printing in appropriate Ormocer™ material
- Modelling and producing of special shaped electrodes
- Scalable LC-lenses arrangement with tunable focal length
ESMobS project consortium
- Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute, HHI
- Fraunhofer Institute for Silicate Research ISC
ESMobS is a joint research project within Fraunhofer HHI and ISC.
- Micro optics,
- 3D displays,
- 3D printing,