Patent ID: 9321225
Filing Date: 2016-04-26
CPC Classification: B29D,G02B

Claim Text:
1. An optical plate, comprising: a substrate having a light emitting surface, a rear surface opposite to said light emitting surface, and a plurality of microstructures that cooperatively define said light emitting surface and each of which parallelly extends in a light traveling direction, wherein each of said microstructures includes first and second convex portions and a concave portion disposed between and interconnecting said first and second convex portions, two adjacent ones of said microstructures being connected, intersections between said microstructures cooperatively define an imaginary plane (S), a lowest point of said concave portion being disposed at one side of the imaginary plane opposite to said rear surface, wherein each of said first and second convex portions of each of said microstructures has a concave arc surface adjacent to an adjacent one of said microstructures.