Pattern generator using liquid crystal and method thereof

摘要

The dynamic fringe pattern generating apparatus includes a liquid crystal layer including a first area and a second area, a lower layer and an upper layer. The upper layer includes a slit array layer where a micro-slit array including a common slit and a plurality of selection slits are formed and an upper transparent electrode layer where a reference electrode and a plurality of selection electrodes are formed. In the dynamic fringe pattern generating apparatus, different fringe patterns are phase-shifted by sequentially controlling a voltage applied to the reference electrode and to the selection electrodes.

主权项

1. A dynamic fringe pattern generating apparatus comprising:
a liquid crystal layer configured to include a first area where liquid crystal is aligned in a first mode and a second area where liquid crystal is aligned in a second mode; a lower layer disposed on a first plane of the liquid crystal layer; and an upper layer disposed on a second plane facing the first plane of the liquid crystal layer, wherein the lower layer is configured to include: a lower alignment layer which is disposed to be in contact with first plane of the liquid crystal layer and is aligned in a first direction; and a lower transparent electrode layer which is disposed so that the one surface is in contact with the lower alignment layer, wherein the upper layer is configured to include: a transparent substrate constructed with an insulating material; an upper alignment layer which is disposed to be in contact with a second plane of the liquid crystal layer and is aligned so that regions corresponding to first and second areas of the liquid crystal layer are aligned in different alignment directions; an upper transparent electrode layer which is disposed between the first plane of the transparent substrate and the upper alignment layer and is configured to a single reference electrode formed at a position corresponding to the first area and a plurality of selection electrodes formed at positions corresponding to the second area; and a slit array layer which is disposed on the second plane facing the first plane of the transparent substrate constructed with a non-transparent material and is configured to include a slit array including a common slit and a plurality of selection slits, wherein the common slit of the slit array is disposed above the first area of the liquid crystal layer, and the selection slits are disposed above the second area of the liquid crystal layer, and wherein the reference electrode and a plurality of the selection electrodes are disposed at positions corresponding to the common slit and the selection slits.