A Novel Polymer Film that Controls Light Transmission

Abstract

This polymer fila is a novel light control film which scatters only incident lights from particular angles and transmits incident lights from all other angles. This unique light control function is caused by the microstructure in the polymer film.The optical properties described in this paper support that the principle of an angle dependent light control function can be explained mainly by diffraction due to the microstructure like a stack of various transmission volume phase gratings. The proposed mechanism of forming the unique microstructure during photopolymerization is due to the diffraction of exposure lights by the polymerization-induced microgels.

Novel screen technology for high‐contrast front‐projection display by controlling ambient‐light reflection

“…To control the image, we used the difference in the angles of incidence of the projected and ambient light. Control was realized by using an optical diffuser, 6,7 which diffuses incident light selectively according to the angle of incidence. By making the incident light diffuse or reflect selectively, a screen that diffuses only projected light towards observers and reflects ambient light away from observers can be realized, as shown in Fig.…”

P‐118: Ellipsoidal Light Diffusing Film with Narrow Louver Micro Structure of Refractive index

“…These films may be classified into two types: films containing a louvered microstructured refractive index, which exhibit an anisotropic diffusion distribution; and films containing columnar microstructures, which exhibit an isotropic diffusion distribution. There have been a number of reports of investigations of the optical properties of such films [1][2][3][4][5] , including a method to fabricate two different microstructures in a film [6] with applications for reflective LCDs [7] .…”

50.3: Low Power, High Image Quality Color Reflective LCDs Realized by Memory‐in‐Pixel Technology and Optical Optimization Using Newly‐Developed Scattering Layer

“…A technology exists which can realize high CR reflective LCDs, using a flat cell gap and a scattering layer in front of the liquid crystal. Its reflectivity is high compared with conventional reflective technology, yet it also has a mirror-like optical property similar to conventional technology [4] [5].…”