PHASE DIFFERENCE FILM INSPECTING DEVICE, PHASE DIFFERENCE FILM INSPECTING METHOD, AND METHOD OF MANUFACTURING PHASE DIFFERENCE FILM USING SAME

摘要

PROBLEM TO BE SOLVED: To provide a phase difference film inspecting device capable of inspecting a defect in phase difference caused by retardation in a thickness direction.

SOLUTION: The phase difference film inspecting device has a first linear polarizing plate and a second linear polarizing plate arranged so that absorption axes are orthogonal to each other; phase difference film support parts for supporting a phase difference film to be arranged between the first linear polarizing plate and the second linear polarizing plate; a light source 4 arranged on the first linear polarizing plate side and irradiating the phase difference film supported to the phase difference film support parts, with light through the first linear polarizing plate; and a light receiver arranged on the second linear polarizing plate side and having directivity to receive light transmitted through the second linear polarizing plate. A vertical light receiving angle θ1of the light receiver is within a range of 0°<θ1<90°, and a parallel light receiving angle θ2is within a range of 0°<θ2<90°.

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