| 摘要 |
#CMT# #/CMT# Light-emitting surface of the optical element e.g. light diffusing sheet (14) for emitting and diffusing light, has parallel elongated lens surfaces (R1-R10) arranged side-by-side in a row and each having an arcuate cross-section. Height of the arcuate cross-section of the elongated lens surfaces varies continuously and repeatedly in the longitudinal direction of the elongated lens surfaces. #CMT#USE : #/CMT# For lighting device used for LCD (both claimed) of apparatuses such as cellular phone, television. #CMT#ADVANTAGE : #/CMT# Achieves a high light utilization efficiency at low cost. Enables effective utilization of the LCD for small-sized and large-sized apparatuses. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The figure shows the schematic perspective view of the light diffusing sheet. 14 : Light diffusing sheet R1-R10 : Elongated lens surfaces. |
