Renner, Otto, Boisselle & Sklar, LLP
Sheet and light-emitting device
A transparent sheet for use with a light emitting body with one of surfaces of the transparent sheet being adjacent to the light emitting body, wherein the other surface of the sheet is divided into a plurality of minute regions δ, a largest inscribed circle of the minute regions δ having a diameter from 0.2 μm to 1.5 μm, each of the minute regions δ being adjoined by and surrounded by two or more other ones of the plurality of minute regions δ, the plurality of minute regions δ include a plurality of minute regions δb which are randomly selected from the plurality of minute regions δ so as to constitute 40% to 98% of the minute regions δ and a plurality of minute regions δa which constitute the remaining portion of the minute regions δ, the minute regions δa are provided with a first tiny element which has thickness d and effective refractive index na, and the minute regions δb are provided with a second tiny element which has thickness d and effective refractive index nb, nb being greater than na.
Panasonic Corporation
G Y H
G02B Y10T H01L
inventional additional additional
Seiji Jyunpei Tatsuya Shin-ichi
Nishiwaki Matsuzaki Nakamura Wakabayashi