Intrinsic OLED emitter properties and their effect on device performance (2008)
Wächter, C.A., Danz, N., Michaelis, D., Flämmich, M., Kudaev, S., Bräuer, A.H., ...
The optical properties of OLEDs can be tailored by optimization of the layer stack and by implementation of micro- and/or nano-optical structures. But the effect of changing the OLED configuration on...
Scaling of the LED collimators with folded multiple reflections (2008)
We investigate the parametrical scaling of LED collimators with folded multiple reflections, described by rational Bezier spline. One can scale the collimator linearly with source size (maintaining...
Incoherent beam shaping with freeform mirror (2008)
Michaelis, D., Kudaev, S., Steinkopf, R., Gebhardt, A., Schreiber, P., Bräuer, A.
Beam shaping of incoherent light sources (LEDs, halogen lamps) for arbitrary target light distribution is obtained by a single free-shape mirror. Special design algorithm ensures continuous profile...
Parametric design of non-imaging collimators (2006)
We describe rational Bezier spline-based parametric description of non-imaging collimators and implementation into optical design software. Together with non-linear optimization routines and adapted...
Microoptics for homogeneous LED-illumination (2006)
Schreiber, P., Kudaev, S., Dannberg, P., Gebhardt, A.
LED-optics for homogeneous illumination of rectangular areas - as required for reading lamps or lighting of imagers - employ a primary optics which acts as collimator and a secondary optics for beam...
Micro-optics for LED light sources (2006)
Modern LEDs form the basis for highly efficient Iight sources for a vast number of applications, such as general illumination, image projection, measurement, microscopy, etc. In addition to the...
Refractive microoptics for LED beam shaping (2006)
Kudaev, S., Schreiber, P., Dannberg, P.
We extend the principle of homogeneizing tandem microlens arrays to increase the flexibility of illumination design. Together with non-imaging collimating optics this gives the possibility to realize...
Michaelis, D., Kudaev, S., Schreiber, P., Bräuer, A.
Arbitrary intensity distributions for e.g. illumination purpose can be obtained by means of freeform shaping the light sources with arbitrary state of coherence. In this contribution we develop...
Successful design of LED light sources requires application of principles of non-imaging optics and their integration into optical design software. We propose some design tools for CPC-like...
Homogeneous LED-illumination using microlens arrays (2005)
Schreiber, P., Kudaev, S., Dannberg, P., Zeitner, U.
Efficient homogeneous illumination of rectangular or circular areas with LEDs is a promising application for double-sided microlens arrays. Such illumination schemes employ a primary optics - which...
Automated optimization of non-imaging optics for luminaires (2005)
Specifics of non-imaging optical systems require special algorithms for automated optimization. We have implemented two methods into commercially available optical design software, which are robust...
Mikrooptik für LED-Lichtquellen (2005)
Moderne LEDs sind hocheffiziente Lichtquellen für eine Vielzahl von Anwendungsfeldern wie Raumbeleuchtung, Bildprojektion, Messtechnik, Mikroskopie, etc. Sie bestehen meist aus einer Chip-nahen...
Recent advances in micro-optical systems (2004)
Bräuer, A., Dannberg, P., Schreiber, P., Zeitner, U.D., Kudaev, S., Duparré, J.
Microoptical systems with nanometer-precision optical elements (2004)
Bräuer, A., Dannberg, P., Schreiber, P., Kudaev, S., Duparré, J., Gebhardt, A.
Anordnung zur optischen Abstandsbestimmung einer reflektierenden Oberflaeche (2004)
Schreiber, P., Kudaev, S., Weichhain, R., Ihlmann, J., Hibbing, M., Michaelis, A., ...
DE 10323336 B UPAB: 20041027 NOVELTY - Arrangement for optical distance determination of a reflecting surface (4) on to which light from a first optical fiber is directed with reflected light routed...
Sensor bzw. Mikrofon mit einem solchen Sensor (2004)
Gorelik, V., Michaelis, A., Hibbing, M., Niehoff, W., Marowsky, G., Weichenhain, R., ...
GB 2400263 A UPAB: 20041104 NOVELTY - The microphone has focussing lens system provided in the light path between transmitting and receiving waveguides to focus the light beam onto the end face of...