Diffuse optical films
OwnerChing Chen, Shin-Lai Luinventors
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Abstract
Diffuse optical films are provided, which include an optical film portion and a light diffusion portion in contact with the optical film portion, the light diffusion portion having rounded depressions disposed on a surface of the light diffusion film portion that faces away from the optical film portion. The optical film portion has an optical characteristic different from optical characteristics of the light diffusion portion. Optical devices including such diffuse optical films and methods of making such diffuse optical films are also provided.
Claims25
A diffuse optical film comprising:
- an optical film portion;
- and
- a light diffusion portion in contact with the optical film portion, said light diffusion portion comprising a plurality of rounded depressions disposed on a surface of the light diffusion portion that faces away from the optical film portion;
- wherein the optical film portion has an optical characteristic different from optical characteristics of the light diffusion portion.
A method of making a diffuse optical film, comprising the steps of:
- providing an optical film portion;
- applying an ionizing radiation curable material onto a surface of the optical film portion;
- and
- utilizing a bead roll to shape the ionizing radiation curable material while an ionic radiation is applied to cure the ionizing radiation curable material through the bead roll so as to form a light diffusion portion having a plurality of rounded depressions on a surface of the light diffusion portion.
Dependencies are inferred from the claim text.