Patent ID: 8696187
Filing Date: 2014-04-15
Classification: G02B,G02F

Abstract:
1. An optical member comprising: a first optical sheet; and a second optical sheet disposed on a light exit side of the first optical sheet, wherein: the first optical sheet includes a body portion, and unit shaped elements arranged on the light exit side of the body portion and each extending linearly in a direction intersecting an arrangement direction; the second optical sheet includes a body portion, and unit shaped elements arranged on the light exit side of the body portion and each extending linearly in a direction intersecting an arrangement direction; the first optical sheet and the second optical sheet are disposed such that the arrangement direction of the unit shaped elements of the first optical sheet intersects the arrangement direction of the unit shaped elements of the second optical sheet; a ratio of a height H the optical member is disposed in a position facing a light source including light emitters, and a proportion of a contour region in an entire length of a contour of each unit shaped element of the first optical sheet in a main section which is parallel both to a normal direction of the first optical sheet and to the arrangement direction of the unit shaped elements of the first optical sheet, in which region an angle θa wherein h wherein h