LIGHT CONTROL SYSTEM, LIGHT CONTROL DEVICE, LIGHT CONTROL FILM, AND DRIVING METHOD OF LIGHT CONTROL FILM

摘要

PROBLEM TO BE SOLVED: To prevent uneven luminance that temporarily occurs during varying a transmittance in a light control film using a liquid crystal.;SOLUTION: A light control system includes: a light control film 10 that controls transmitted light by aligning a liquid crystal of a liquid crystal cell 14 held between linearly polarizing plates 12, 13 by a VA system; and a light control device 3 having a drive power generating part 5 that outputs a rectangular wave signal to the light control film 10. The light control device 3 varies amplitudes of the rectangular wave signal in response to an operation of an operator 2U, 2D so as to vary a transmittance of the light control film 10. Upon increasing the amplitude of the rectangular wave signal, the light control device gradually increases the amplitude of the rectangular wave signal.;SELECTED DRAWING: Figure 9;COPYRIGHT: (C)2018,JPO&INPIT