MAGNETIC FIELD CONTROLLED ACTIVE REFLECTOR AND MAGNETIC DISPLAY PANEL COMPRISING THE ACTIVE REFLECTOR

摘要

Provided is an active reflector that transmits or reflects light by being controlled by a magnetic field and a magnetic display panel that employs the active reflector. The active reflector includes a magnetic material layer in which magnetic particles are buried in a transparent insulating medium, and the magnetic material layer has an optical incident surface having an array of hybrid curved surfaces which include a central surface having a convex parabolic shape and an axis of symmetry and a peripheral surface having a focal point on the axis of symmetry of the central surface and a concave parabolic shape extending from the central surface.