  We present a novel platform of optical tweezers which combines rapid
prototyping of user-definable microlens arrays with spatial light modulation
(SLM) for dynamical control of each associated tweezer spot. Applying
femtosecond direct laser writing, we manufacture a microlens array of 97
lenslets exhibiting quadratic and hexagonal packing and a transition region
between the two. We use a digital micromirror device (DMD) to adapt the light
field illuminating the individual lenslets and present a detailed
characterization of the full optical system. In an unprecedented fashion, this
novel platform combines the stability given by prefabricated solid optical
elements, fast reengineering by rapid optical prototyping, DMD-based real-time
control of each focal spot, and extensive scalability of the tweezer pattern.
The accessible tweezer properties are adaptable within a wide range of
parameters in a straightforward way.
