Laterally displaceable microlens array telescopes allow for variable and fast beam deflection. The generation of spurious light usually leads to a reduction of transfer efficiency with increasing displacement. We present the introduction of an array of field lenses on the back side of a recollimating microlens array that results in a reduced deflection angle dependency of transfer efficiency. A paraxial matrix formalism is used to prove the theoretical elimination of spurious light by use of a field lens array. The fabrication of well-aligned double-sided lens arrays by UV replication is discussed. Measurements of transfer efficiency with and without the use of field lens arrays are compared with the results of numerical wave-optic simulations.
© 2004 Optical Society of America
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(060.2350) Fiber optics and optical communications : Fiber optics imaging
(220.4880) Optical design and fabrication : Optomechanics
(230.6120) Optical devices : Spatial light modulators
(350.3950) Other areas of optics : Micro-optics
Jacques Duparré, Daniela Radtke, and Peter Dannberg, "Implementation of Field Lens Arrays in Beam-Deflecting Microlens Array Telescopes," Appl. Opt. 43, 4854-4861 (2004)