Title:
WIRE GRID TYPE POLARIZING ELEMENT AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/261791
Kind Code:
A1
Abstract:
In a wire grid type polarizing element according to the present invention, metal reflectors (B) are embedded in a large number of grooves (C) provided on the surface of a transparent sheet (A) in a one-dimensional grid pattern in the same direction and at the same period, the average width (a) of the metal reflectors (B) is 200 nm or less, the ratio (b/a) of the average thickness (b) of the metal reflectors (B) from the front surface side of the sheet (A) to the tip in the back surface direction to the average width (a) is 4-25 (inclusive), in any cross section perpendicular to the front surface of the sheet (A), the shape of the metal reflector (B) near the tip in the thickness direction becomes thinner along a straight line or a smooth curved line toward the tip, and the ratio (c/a) of the average length (c) of the portion (D) that gradually becomes thinner toward the tip to the average width (a) is 1.2 or more.
Inventors:
HOKARI RYOHEI (JP)
KURIHARA KAZUMA (JP)
TAKAKUWA KYOHEI (JP)
YAMAMOTO AKITAKA (JP)
YAMAGUCHI YUSUKE (JP)
KURIHARA KAZUMA (JP)
TAKAKUWA KYOHEI (JP)
YAMAMOTO AKITAKA (JP)
YAMAGUCHI YUSUKE (JP)
Application Number:
PCT/JP2020/019185
Publication Date:
December 30, 2020
Filing Date:
May 14, 2020
Export Citation:
Assignee:
AIST (JP)
RYOKO CHEMICAL CO LTD (JP)
TOKAI SEIMITSU IND CO LTD (JP)
RYOKO CHEMICAL CO LTD (JP)
TOKAI SEIMITSU IND CO LTD (JP)
International Classes:
G02B5/30
Foreign References:
| JP2012073484A | 2012-04-12 | |||
| JP2018159880A | 2018-10-11 | |||
| JP2004309903A | 2004-11-04 | |||
| JP2006308668A | 2006-11-09 | |||
| JP2009244312A | 2009-10-22 | |||
| JP2011170136A | 2011-09-01 | |||
| JP2010204297A | 2010-09-16 |
Attorney, Agent or Firm:
HIROSAWA Kuninori et al. (JP)
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