| 摘要 |
A method and apparatus are disclosed for maintaining a predetermined separation between the walls of light valves, especially when the pressure on the inside of the walls may be less than the pressure on the outside of the same walls (atmospheric pressure). To maintain this separation, a plurality of small chemically inert, non-deformable beads are added to the fluid suspension in the light valve. These beads which have at least one dimension which is the same as the desired spacing between the walls distribute themselves throughout the suspension to prevent the pressure differential from causing the walls to come closer together than the predetermined distance between them and thereby help to assure the proper operation of the light valve. |
