VIEW ANGLE CHARACTERISTIC MEASURING METHOD AND VIEW ANGLE CHARACTERISTIC MEASURING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a view angle characteristic measuring method and a view angle characteristic measuring device capable of measuring the view angle characteristic inexpensively in a wide angle at one time by reducing the number of times of measurement.;SOLUTION: A beam radiated from a film-shaped prism sheet 4 wherein a back light 10 is disposed on the back is received by a fish-eye lens G, and an image formed by the fish-eye lens G is imaged by an area camera C, and image processing of an image signal is performed by an image processing means, to thereby measure the view angle characteristic of the prism sheet 4.;COPYRIGHT: (C)2007,JPO&INPIT