Optical body

Patent metadata

Field	Value
Publication number	US-11513270-B2
Application number	US-201816753161-A
Country	US
Kind code	B2
Filing date	Oct 2, 2018
Priority date	Oct 5, 2017
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

An optical body including: a first optical layer which has a surface having a convex profile in which a plurality of one-directionally extending elongated convex portions are one-dimensionally aligned in one direction; an inorganic layer disposed on the surface of the first optical layer on a side having the convex profile and a second optical layer disposed on a side of the inorganic layer so that the convex profile is embedded; wherein the convex profile meets at least one of the following (1) to (4):
(1) a height varies in an extending direction in each of the elongated convex portions, (2) a ridge portion meanders in a direction perpendicular to both the extending direction and a height direction of the convex portion in each of the elongated convex portions, (3) heights of the elongated convex portions adjacent to each other are different from each other, and (4) a triangular prism-shaped convex portion and an elongated convex portion having a curved surface are adjacent to each other.

First claim

The invention claimed is:

1. A heat ray reflective optical body comprising:
a first optical layer which has a surface having a convex profile in which a plurality of one-directionally extending elongated convex portions are one-dimensionally aligned in one direction;
an inorganic layer disposed on the surface of the first optical layer on a side having the convex profile and
a second optical layer disposed on a side of the inorganic layer so that the convex profile is embedded;
wherein the convex profile meets at least one of the following (1), (2) and (4):
(1) a height varies periodically in an extending direction in each of the elongated convex portions and a period for which the height varies is between 400 μm and 1200 μm,
(2) a ridge portion meanders in a direction perpendicular to both the extending direction and a height direction of the convex portion in each of the elongated convex portions, and
(4) a triangular prism-shaped convex portion and an elongated convex portion having a curved surface are adjacent to each other.

2. The heat ray reflective optical body according to claim 1 , wherein the inorganic layer is a wavelength selective reflecting layer.

3. The heat ray reflective optical body according to claim 1 , wherein the inorganic layer is semitransparent.

4. The heat ray reflective optical body according to claim 1 , wherein the first optical layer and the second optical layer have transparency.

5. The heat ray reflective optical body according to claim 1 , wherein the optical body is bonded to a windowpane in use.

Assignees

• Dexerials Corp

Inventors

• Ohta Eiji
• Nagahama Tsutomu
• Ohkawara Shigehisa
• Harimara Tatsuya
• Doi Katsuhiro
• Noda Kazuhiko
• Shibata Akihiro
• Goto Kazuo
• Kudo Yasuyuki

Classifications

• E06B9/24 Primary

  Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; {Slat blinds}(operating, guiding or securing devices or arrangements for roll-type closures E06B9/56; free-hanging flexible screens A47H23/00) · CPC title

• G02B5/282 Primary

  reflecting for infrared and transparent for visible light, e.g. heat reflectors, laser protection · CPC title

• G02B5/0221

  the surface having an irregular structure (G02B5/0226 takes precedence) · CPC title

• E06B2009/2417

  Light path control; means to control reflection · CPC title

• G02B5/0215

  the surface having a regular structure · CPC title