Construction polarizing film and privacy protection system using the same

摘要

In addition to the information from the display in one space among the two spaces opposed to the polarization film for the building, the visibility of other information in one space is suppressed, and the difference between the light quantity between one space and the other space is utilized. The polarization film for building can be visually recognized in one space.Solution: an optical polarization film according to one embodiment comprises a first polarizing portion having a transmission axis in the first direction, a second polarizing portion having a transmission axis in the second direction crossing in the first direction, and a depolarization portion provided between the first polarizing portion and the second polarizing portion having a slow phase axis.Diagram