Polarized light illuminating apparatus

Abstract

In a polarized light illuminating apparatus that uses a polarizer unit in which a plurality of polarized plates are arranged and configured, an external gas is introduced in a lamp box from the gaps of the boundaries of the polarized plates. The polarized light illuminating apparatus of the present invention is equipped with a light emitting part (2) which possesses a bar-shaped lamp (21) and a cylindrical reflector (22), the polarizer unit (80) is arranged at the light emitting side, and a plurality of polarizers are arranged and configured on the polarizer unit (80). An cooling air is cooled by a cooling machine (20), is transmitted by an air blower (30) to the light emitting side of the above reflector (22) via a ventilation path (50) to cool the lamp (21) and the reflector (22), and is returned to the cooling machine (20). A nozzle (3) used to supply a gas ( for example, a clean and dry gas) is arranged in a space between the reflector (22) and the above polarizer unit (80), and the above space becomes a positive pressure, so that the external gas can be prevented from being introduced into the lamp box (10).

Description

technical field [0001] The present invention relates to a polarized light irradiation device for aligning by irradiating polarized light of a predetermined wavelength to an alignment film of a liquid crystal element, an alignment layer of a viewing angle compensation film, or the like. Background technique [0002] In recent years, in the alignment treatment of the alignment film of the liquid crystal display element represented by the liquid crystal panel, the alignment layer of the viewing angle compensation film, etc., a technology called photo-alignment is used to align by irradiating polarized light with a wavelength in the ultraviolet range. . Hereinafter, a film or layer that generates alignment characteristics by light, such as an alignment film or a thin film provided with an alignment layer, is collectively referred to as a photo-alignment film. [0003] As the size of the liquid crystal panel increases, the photo-alignment film has a larger area, such as a quadra...

AI Technical Summary

Problems solved by technology

[0034] Thus, in Image 6 , Figure 8 In the light box of the shown polarized light irradiation device, a problem occurs that the siloxane compound is introduced from the gap between the polarizing plates together with the outside air, and reacts with the ultraviolet rays radiated from the lamp to cause the lamp side surface of the wire grid polarizing element to change. turbid

However, as mentioned above, this gap is necessary for aligning and adjusting the mutual grid directions of the polarizing plates, and a sealed structure cannot be made.

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