Cover member for exhibit item or display

Patent metadata

Field	Value
Publication number	US-9995852-B2
Application number	US-201314381621-A
Country	US
Kind code	B2
Filing date	Feb 12, 2013
Priority date	Mar 9, 2012
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

Provided is a cover member for an exhibit or display element which makes an exhibit or display element visible as if nothing existed between the exhibit or display element and the viewer and can protect the exhibit or display element. The cover member ( 3 ) for an exhibit or display element includes a transparent substrate ( 31 a ) and an antireflection film ( 31 b ) formed on at least one surface of the transparent substrate. The cover member ( 3 ) for an exhibit or display element has a luminous reflectance of 0.5% or less.

First claim

The invention claimed is:

1. A cover member for an exhibit or display element, the cover member comprising:
a transparent substrate; and
an antireflection film on both surfaces of the transparent substrate; wherein
the cover member has a luminous reflectance of 0.16% or less determined as chromaticity Y from tristimulus values defined in JIS Z 8701 (1999);
each of the antireflection films includes alternating films of low-refractive index layers and high-refractive index layers; and
a total number of the alternating films is from 8 to 40.

2. The cover member for an exhibit or display element according to claim 1 , wherein the cover member has an ultraviolet transmittance of 30% or less.

3. The cover member for an exhibit or display element according to claim 2 , wherein each of the antireflection films has an ultraviolet transmittance of 30% or less.

4. The cover member for an exhibit or display element according to claim 1 , wherein an outermost layer of each of the antireflection films is formed of a SiO 2 film containing Al 2 O 3 .

5. The cover member for an exhibit or display element according to claim 4 , wherein the Al 2 O 3 content in the SiO 2 film is in a range of 1 to 20% by mass.

6. The cover member for an exhibit or display element according to claim 1 , wherein the total number of the alternating films is from 14 to 40.

7. An exhibition case comprising:
a base; and
the cover member according to claim 1 secured to the base to contain and protect an exhibit set on the base.

8. The exhibition case according to claim 7 , wherein the cover member has a curved surface.

9. A frame comprising:
a frame member; and
the cover member according to claim 1 secured to the frame member to avoid contact with an exhibit contained therein.

10. An aquarium comprising:
a sidewall; and
the cover member according to claim 1 provided on at least a portion of the sidewall.

11. The aquarium according to claim 10 , wherein the cover member is removably provided.

12. A display device comprising:
a container including a display element and the cover member according to claim 1 .

13. The display device according to claim 12 , wherein the display element and the cover member are fixedly bonded together through a resin film.

14. The display device according to claim 12 , wherein
the display element is provided in a region of the display device, and
the cover member is provided in a partial region of the display device to cover the display element.

Assignees

• Nippon Electric Glass Co

Inventors

• Imamura Tsutomu
• Saitoh Takayoshi
• Ikegami Koji
• Kajioka Toshiyuki

Classifications

• Y10T428/24942

  including components having same physical characteristic in differing degree · CPC title

• A01K63/003

  Aquaria; Terraria (A01K63/04, A01K63/06 take precedence) · CPC title

• A47F3/005

  with glass panels · CPC title

• G02B1/115 Primary

  Multilayers · CPC title

• C03C2217/734

  comprising an alternation of high and low refractive indexes · CPC title