Patent ID: 7749579
Filing Date: 2010-07-06
Classification: B29C,B29K,C08J,C09K,G02B,Y02P,Y10S,Y10T

Abstract:
1. A rolled optical film, comprising: a cellulose ester film having a width of from 1 m to 3 m and a length of 500 m or more and shaped in a rolled film; wherein the entire surface of the cellulose ester film is shaped so that the cellulose ester film has from 1 to 20 continuous streaks per 10 mm in a lateral direction on a whole surface thereof in which the continuous streaks have a height of from 50 nm to 300 nm, an inclination of from 50 nm/mm to 300 nm/mm and a continuous length of 50 cm or more in a longitudinal direction thereof, and the cellulose ester film does not have, on the whole surface thereof, any streaks which have a height of over 300 nm, an inclination of over 300 nm/mm and a continuous length of 50 cm or more in a longitudinal direction thereof.