System for control of optical properties of light

A system for control of optical properties of light, the system comprising:

• a cell comprising a first optically transparent member and a second optically transparent member disposed in a vertical direction, wherein at least one of the first optically transparent member and the second optically transparent member is elastic, wherein the optically transparent members are disposed at a distance from each other with closed edges thereby defining a space between the optically transparent members;
• and
• at least two fluids, a first fluid and a second fluid, each fluid having at least one optical property different from the other, wherein,
• the first fluid is configured to be received within the space;
• the second fluid is configured to be received into the space, while at least a portion of the first fluid is disposed in the space;
• the injection of the second fluid into the space displaces the first fluid;
• the first fluid and the second fluid interface with each other in the space, while remaining separate;
• and
• the second fluid is configured to be withdrawn from the space leaving the first fluid in the space,
• wherein prior to reception of the second fluid within the space, the optically transparent members are parallel to each other, reception of the second fluid causes the elastic first optically transparent member and/or the elastic second optically transparent member to expand, and withdrawal of the second fluid from the space causes the elastic first optically transparent member and/or the elastic second optically transparent member to regain a shape that existed before expansion.