OPTICAL UNIT FOR DISPLAY DEVICE, BACKLIGHT DEVICE, DISPLAY DEVICE AND TELEVISION RECEIVER

摘要

A polarizing/reflecting sheet (polarization layer) (12) and a prism sheet (lens layer) (13) for collecting light are arranged. Furthermore, the polarizing/reflecting sheet (12) and the prism sheet (13) are arranged to have a lens groove (13b) of the prism sheet (13) in a direction parallel to a direction vertical to a transmitting axis (12a) of the polarizing/reflecting sheet (12).