General Electric Company

Joe Riello

Grant Hay

Karkala Arun Kumar

Philip Matthew Peters

Eugene David Herrmann

Nickey Ambrose

An embodiment of a method of making an optical film comprises heating the optical film comprising greater than or equal to 80 wt. % polycarbonate to a sufficient temperature to stretch the optical film, wherein the weight percent is based on a total weight of the optical film; and stretching the optical film. A resulting stretched optical film has a linear CTE measured in a direction parallel to a stretching direction of less than or equal to 50&#xd7;10cm/cm/&#xb0; C.

Methods of making and using optical film, light-diffusing film

A method of making an optical film comprises heating the optical film comprising greater than or equal to 80 wt. % polycarbonate to a sufficient temperature to stretch the optical film, wherein the weight percent is based on a total weight of the optical film; and stretching the optical film, wherein a resulting stretched optical film has a linear CTE measured in a direction parallel to a stretching direction of less than or equal to 50&#xd7;10cm/cm/&#xb0; C.

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Pittsfield, MA, United States of America

Joe Riello