Patent ID: 9671649
Date: 2017-06-06
CPC Classifications: G02F

Claim:
1. A phase modulator for polarized light, comprising: a first substrate, which has a first surface, and a second substrate, which has a second surface, the two substrates being arranged facing one another, a liquid crystal layer, which is arranged between the two substrates and contains liquid crystal molecules, an in-plane electrode arrangement provided on the two substrates, the electrodes on the first substrate being oriented at a relative angle of 90 degrees with respect to the electrodes on the second substrate, the two surfaces of the substrates being configured in order to orientate the liquid crystal molecules next to the respective surface in a direction which respectively forms an out-of-plane angle with the respective surface of the respective substrate, the magnitude of the out-of-plane angle is more than 0 degrees but less than or equal to 45 degrees, and the electrode arrangement is controllable in such a way that an in-plane component φ of the liquid crystal molecule orientation is adjustable in an angle range of up to 180 degrees, and that the rotation sense of the liquid crystal molecules which are next to the first surface is opposite to the rotation sense of the liquid crystal molecules which are next to the second surface.