Polarizing element

A technology of polarizing elements and transparent substrates, applied in polarizing elements, optical elements, optics, etc., can solve problems such as difficulty in maintaining reliability and high difficulty, and achieve the effect of improving light transmission characteristics

Active Publication Date: 2017-11-28
DEXERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is known that the transmittance can be improved by reducing the grid width of the polarizing element, but actually it is difficult to form a pattern with narrowed grid width and it is also difficult to maintain reliability

Method used

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Examples

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Embodiment Construction

[0046] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0047]

[0048] figure 1 It is a schematic cross-sectional view showing the polarizing element 1 according to one embodiment of the present invention. Such as figure 1As shown, the polarizing element 1 is provided with: a transparent substrate 11 transparent to light in the wavelength band used; 12. A dielectric layer 13 formed on the reflection layer 12 and an absorption layer 14 formed on the dielectric layer 13. That is, the polarizing element 1 has a one-dimensional grid-like wire grid in which the reflective layer 12, the dielectric layer 13, and the absorbing layer 14 are stacked in this order from the transparent substrate 11 side, and the lattice-shaped protrusions 10 are arranged at regular intervals on the transparent substrate 11. structure.

[0049] When viewed from the direction (predetermined direction) in which the protrusions of the respective one-...

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Abstract

This polarizing element is provided with a transparent substrate and lattice shaped protruding parts arranged at a pitch smaller than the wavelength of light in the region used on the transparent substrate and extending in a prescribed direction. The lattice shaped protruding parts include a reflective layer formed on the transparent substrate and grid tip parts which are formed such that the side surfaces thereof are inclined in the direction that the tip parts taper.

Description

[0001] Cross-reference of related applications [0002] This application claims priority based on Japanese Patent Application No. 2015-093351 (filed on April 30, 2015), and the entire disclosure of this application is incorporated herein for reference. technical field [0003] The present invention relates to a polarizing element having a wire grid configuration. Background technique [0004] The polarizer is an optical element that absorbs polarized light in one direction and transmits polarized light in a direction perpendicular to it. In a liquid crystal display device, a polarizing element is required in principle. In particular, in a liquid crystal display device that uses a light source with a large amount of light, such as a transmissive liquid crystal projector, the polarizing element receives strong radiation, so excellent heat resistance is required, and a size of several centimeters and a relatively small size are required. High extinction ratio. A wire grid-ty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30
CPCG02B5/3058G02B5/3066
Inventor 武田吐梦
Owner DEXERIALS CORP
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