EP0098088A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Optical laminar structure
Assignee: Teijin Ltd
•
Filing: 1983-06-21
•
Granted: —
•
Expires: 2003-06-21
Abstract
Abstract This invention provides an optical laminar structure having an optically selective transmitting function accordant with light wavelength, whereby it is capable of having high transmittance for visible ray and low transmittance for near infrared ray and infrared ray, so that said optical laminar structure can be offered at a low price to expand its applications not only in special optical lines but also in general glazing use.
Inventors
- 👤 Toshiaki Yatabe
- 👤 Toshio Nishihara
- 👤 Nobuo Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 21:37
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/28; G02B5/281; G02B5/282
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
46 words
An optical laminar structure having an optically selective transmitting function, in which a dielectric layer arranged sandwich- like in between thin metal layers is located at least on one side of the transparent substrate, wherein said dielectric layer comprises a thin layer of transparent organic polymer.
Claim 2
Dependent Claim
46 words
An optical laminar structure having an optically selective transmitting function, in which a dielectric layer arranged sandwich- like in between thin metal layers is located at least on one side of the transparent substrate, wherein said dielectric layer comprises a thin layer of transparent organic polymer.
Claim 3
Dependent Claim
20 words
The optical laminar structure as defined in Claim 1, wherein said transparent organic polymer is a solvent soluble organic polymer.
Claim 4
Dependent Claim
25 words
The optical laminar structure as defined in Claim 1, wherein said transparent organic polymer has a reflective index in the range of 1.35 to 1.65.
Claim 5
Dependent Claim
22 words
The optical laminar structure as defined in Claim 1, wherein said dielectric layer has a thickness of 300 A to 2,000 A.
Claim 6
Dependent Claim
25 words
The optical laminar structure as defined in Claim 1, wherein said transparent organic polymer is soluble about 0.1 wt% or more in an organic solvent.
Claim 7
Dependent Claim
30 words
The optical laminar structure as defined in Claim 1, wherein said thin metal layers are formed of one or more than one element selected from among Ag, Au, and Cu.
Claim 8
Dependent Claim
26 words
The optical laminar structure as defined in Claim 1, wherein said thin metal layers have a thickness ranging from about 40 Å to about 150 A.
Claim 9
Dependent Claim
29 words
The optical laminar structure as defined in Claim 1, wherein said thin metal layers are respectively sandwiched in between layers deposited as metal Ti, Ni, Bi, Zr or Si.
Claim 10
Dependent Claim
30 words
The optical laminar structure as defined in Claim 1, wherein said transparent substrate is a biaxially oriented polyethylene terephthalate film having a thickness ranging from 5 µm to 200 µm.
Claim 11
Dependent Claim
89 words
The optical laminar structure as defined in Claim 1, wherein said transparent substrate is a biaxially oriented polyethylene terephthalate film having a thickness of 5 µm to 200 µm, said thin metal layers are respectively formed of a metal layer or an alloy layer selected from among Ag, Au, and Cu to a thickness of 40 Å to 150 A, and said dielectric layer is formed of a resin selected from among acrylonitrile resins, nylon resins, polystyrene, and polymethacrylate to a thickness ranging from 500 Å to 1,500 Å.
Claim 12
Dependent Claim
25 words
ll. The optical laminar structure as defined in Claim 10, wherein said dielectric layer is formed of polymethacrylonitrile or a copolymer of acrylonitrile and styrene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.