OPTICAL SYSTEM APPLICABLE TO IMPROVING THE DYNAMIC RANGE OF SHACK-HARTMANN SENSORS

摘要

An addressable array of lenses is disclosed. Two electrical connections per row address specific lenses within that row. Carriages support individual lenses, and from each resonant units with frequencies that are unique within each row. A voltage, having the same frequency as a selected resonant unit, is applied. The selected lens produces a resonating image. Testing has verified proper resonance addressing within a 5-by-5 array of microlenses. The array can be applied to a Shack-Hartmann (SH) sensor. To compensate for errant focal points outside of their assigned area, resonating images are identified by a processor. The array thus improves the dynamic range of wavefront aberration that can be measured by the SH sensor. The inventors currently estimate the improvement over conventional SH designs to be about a factor of 30.