We present a versatile illumination system where white light emitting diodes are coupled through a planar waveguide to periodically patterned extraction features at the focal plane of a two dimensional lenslet array. Adjusting the position of the lenslet array allows control over both the directionality and divergence of the emitted beam. We describe an analytic design process, and show optimal...

Light guides have been widely used for transforming line sources into planar illuminators for lighting and display applications. Solid light guides provide good uniformity but still have the issues of heavy weight and material absorption, especially for large applications. Hollow light guides solve the problem of weight, but the uniformity is relatively poor or efficiency could be sacrificed fo...

The design and development of a versatile active illumination system is described. The necessary system components are related to existing techniques which utilise various forms of structured light to extract range data. The system is composed of a high power stroboscopic illuminator coupled with a high resolution liquid crystal display and a precision actuated mirror. A colour filtering device...

The design and development of a versatile active illumination system is described. The necessary system components are related to existing techniques which utilise various forms of structured light to extract range data. The system is composed of a high power stroboscopic illuminator coupled with a high resolution liquid crystal display and a precision actuated mirror. A colour filtering device...

This paper concentrates on the Doppler spectrum characteristics of hybrid bistatic SAR experiments, i.e., TerraSAR-X/PAMIR where TerraSAR-X was steered as the illuminator in the sliding spotlight mode, and PAMIR, mounted on a Transall C-160, operated in the inverse sliding spotlight mode. The bistatic Double Sliding Spotlight (DSS) experiment has been successfully performed in March 2009. For t...