Polarizing element unit, transmittance setting method of polarizing element unit, light irradiation apparatus using same

Abstract

A polarizing element unit, a transmittance setting method of polarizing element unit, and a light irradiation apparatus using the same, in the arrangement of multiple wire grid polarization components of polarization components unit, even if the polarization components of transmittance is individual difference, also make the light area of uniform illumination distribution. Multiple wire grid polarization element to the end in the direction of the light from the light source through overlapping way along the direction of array configuration in a box body, on the box body, and various polarization components corresponding to the set have to through the polarization components of light shading shading institutions. Shading institutions consists of multiple mask, the mask to the polarization components on the outstanding amount is variable, by changing the screen of the outstanding amount, to adjust the transmission the polarization components of light transmission. Thus, even if the wire grid polarization components of transmittance is individual difference, also can make each polarization components of the same amount of light transmission, can make the light area of uniform illumination distribution.

Description

technical field [0001] The present invention relates to a polarizing element unit in which a plurality of polarizing elements are arranged, and an alignment film for producing a liquid crystal display element using the polarizing element unit, and photo-alignment or 3D alignment of an alignment layer using a viewing angle compensation film of ultraviolet curable liquid crystal. A light irradiation device for a retardation film used in an image display device, and a method for setting the transmittance in which the transmittance of the polarizing element unit is set so as to be constant as a whole. Background technique [0002] For the alignment treatment of alignment films of liquid crystal display elements such as liquid crystal panels and alignment layers of retardation films (hereinafter referred to as films for 3D) used in 3D image display devices that display 3D images, polarization in the ultraviolet region that irradiates the alignment films is gradually adopted. The ...

AI Technical Summary

Problems solved by technology

However, if the transmittance of each polarizing element differs by a few percentage points, even if light of uniform illuminance enters the entire polarizing element unit, the illuminance distribution of the light irradiation area made by the light passing through the polarizing element is not uniform.

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