Method for producing mold for use in duplicating light...

Details Method for producing mold for use in duplicating light... Method for producing mold for use in duplicating light...

2008-04-15

2008-04-15

Lee, Diane I. (Department: 2851)

Optical: systems and elements

Projection screen

C359S459000, C359S599000

Reexamination Certificate

active

07359118

ABSTRACT:
A method of producing a mold for use in duplicating a light diffusion sheet is provided. The method includes a step of conducting sandblasting for blasting abrasive material from a blast gun to a surface of a mold base material to form unevenness in the surface of the mold base material, wherein the abrasive material is blasted to the surface of the mold base material at a blast angle of less than 90°.

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