Light polarizing device, a method of continuously fabricating same, and reflective optical devices using same

Abstract

The invention provides a grid-type polarizing optical element which can be used in the visible light region to the infrared light region, its continuous manufacturing method and the polarizing optical element. The polypropylene film is stretched 4 times in the axial direction by roller (12), the first constant temperature tank (13), and roller (12`), after which aluminum metal is vapor-deposited to 10 nanometers in the vacuum vapor deposition tank (14). The thickness, and then, in roll (15), the 2nd constant temperature bath (16), roll (15 ') carry out 2 times stretching along axial direction simultaneously with polypropylene film part crystallization. At this time, the aluminum metal forms homogeneous cracks in a direction perpendicular to the stretching direction. After that, the film was heat-treated in a third constant temperature bath (17), and then wound up on a winding roll (18). The obtained film-shaped polarizing optical element had a polarization rate of 99.5% and a light transmittance of 90% in the infrared wavelength range of 1 micrometer to 10 micrometers. In addition, the reflectance of infrared rays measured at a place perpendicular to the film was 99.9% or more.

Description

Technical field [0001] The present invention relates to a polarizing optical element, a manufacturing method thereof, and a reflective optical element using the element, in particular to the control of a high-order polymer structure, from several nanometers to several tens of nanometers, with a length of several tens of nanometers to several millimeters. A grid-type polarizing optical element that can be used in the visible light region to the infrared region and a continuous manufacturing method thereof with an anisotropic conductive material formed on its surface or inside, and a reflective optical element using the polarizing optical element. Background technique [0002] Up to now, people have known three methods for making thin-film polarizing optical elements. The first method is a method of doping a stretched polyvinyl alcohol (PVA) film with a dichroic dye such as iodine as disclosed in Patent Document 1 below. In this method, a thin film of PVA with a dichroic substance ...

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Problems solved by technology

[0008] However, if the manufacturing method of the grid-type polarizing optical element disclosed in the following Patent Document 4 is used, since the stretched transparent and flexible substrate is uniformly stretched by stretching, a uniform stretching force is also applied to the metal thin film on the substrate. , therefore, the metal lines formed by the metal film are not regularly juxtaposed at wavelength-level intervals

Even when using a metal with good ductility such as gold, because the metal extends with the substrate to cover the substrate without phase transformation, on the one hand, when using a metal that does not have good ductility such as aluminum, because the irregular There is a problem that the polarization effect is hardly obtained due to cracks and the metal is peeled off from the substrate

[0009] In addition, in recent years, as disclosed in Patent Document 5, it has been proposed to form fine grooves on a glass plate using a photoresist film, and to evaporate metal therein to form a polarizing optical element in the visible light region. However, In this method, the manufacturing process is complicated, the price becomes high, and the 5cm cannot be realized in practice 2 Large-area operations above

[0010] Therefore, in the above-mentioned manufacturing method of the grid-type polarizing optical element, only a polarizing optical element of a maximum of several square centimeters can be obtained, and a film-shaped grid-type polarizing optical element having a large area larger than this area cannot be obtained.

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