Phase Modulation Module and Projector Comprising the Same

Abstract

An optical phase modulation module and a projector comprising the same are provided. The optical phase modulation module comprises a transparent thin film with an electro-optic effect, a plurality of first upper electrodes, a plurality of second upper electrodes and a plurality of lower electrodes. The transparent thin film with the electro-optic effect has a top surface and a bottom surface. The first upper electrodes are formed on the top surface. The second upper electrodes are formed on the top surface and arranged alternately with the first upper electrodes. The lower electrodes are formed on the bottom surface. A first voltage difference exists between the first upper electrodes and the bottom electrodes, while a second voltage difference exists between the second upper electrodes and the bottom electrodes. Two different electric fields are produced within the transparent thin film with the electro-optic effect by the first voltage difference and the second voltage difference respectively.

Dependencies are inferred from the claim text.