In this work, a compliant parallel tip-tilt motion stage design is proposed by employing novel bridge-lever composite mechanisms which can transmit the translational motion to the rotational motion. The variable axis flexure hinges are introduced in this particular design to achieve better translational-angular coupling, which improve the bearing capability and the motion range. Furthermore, a linear analytical model is also developed to describe the translational-angular behavior of the proposed mechanisms. Finally, finite element simulations are conducted to verify the analytical results and illustrate the dynamic characteristics of the tip-tilt stage. The results on the proposed design show significant potentials in applications such as active optics which require large range and high precision pointing, positioning and alignment of optical beams.
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