Patent US5288558A successfully refreshed from Google Patents.
US5288558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment for video screens having dual optical active dereflection layers
Assignee: FIBERGLASS AG
•
Filing: 1992-09-11
•
Granted: 1994-02-22
•
Expires: 2012-09-11
Abstract
Abstract An attachment for a video screen of a cathode ray tube of a monitor or TV receiver is constituted by a glass pane having on a front side, facing away from the video screen, a multilayer anti-reflective coating. If necessary, the glass pane on a rear side, facing towards the video screen, may incorporate an absorptive coating. The anti-reflective coating is limited to two active dereflective layers. One of said two layers is a metal layer of gold or a metal alloy with a gold content of more than 50% and with a thickness of 4 to 10 nm. The second active dereflective layer is of dielectric material with a refractive power of n<1.8 and constituting an interference layer which faces away from the glass pane and which is essentially absorption-free and forms an anti-reflective layer for the visible region of the spectrum.
Inventors
- 👤 Axel Nothe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:50
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J29/896; H01J2229/00; H01J2229/89; H01J2229/8913; H01J2229/8916; H01J2229/8918; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
128 words
Video screen attachment for attachment to a cathode ray tube of a monitor or TV receiver comprising: a glass pane having a first side facing away from a video screen ad an opposite rear side, a multilayer anti-reflective coating of no more than two active dereflective layers on said first side of said glass pane comprising: (1) a metal layer (12) of gold or a metal alloy of gold content in excess of 50% of a thickness of 4 to 10 nm, and (2) an interference layer (14) of a dielectric material with a refractive power of n<1.8 on said metal layer on the side facing away from said glass pane (10), which is essentially absorption-free and forming an anti-reflective layer for the visible region of the spectrum.
Claim 2
Dependent Claim
128 words
Video screen attachment for attachment to a cathode ray tube of a monitor or TV receiver comprising: a glass pane having a first side facing away from a video screen ad an opposite rear side, a multilayer anti-reflective coating of no more than two active dereflective layers on said first side of said glass pane comprising: (1) a metal layer (12) of gold or a metal alloy of gold content in excess of 50% of a thickness of 4 to 10 nm, and (2) an interference layer (14) of a dielectric material with a refractive power of n<1.8 on said metal layer on the side facing away from said glass pane (10), which is essentially absorption-free and forming an anti-reflective layer for the visible region of the spectrum.
Claim 3
Dependent Claim
20 words
Attachment in accordance with claim 1, further comprising a light absorbent coating on the rear side of said glass pane.
Claim 4
Dependent Claim
23 words
Attachment in accordance with claim 1, characterized by the fact that the thickness of the metal layer (12) is 5 to 7 nm.
Claim 5
Dependent Claim
24 words
Attachment in accordance with claim 1, characterized by the fact that the optical thickness of the interference layer (14) is 60 to 140 nm.
Claim 6
Dependent Claim
21 words
Attachment in accordance with claim 1, characterized by the fact that he interference layer (14) comprises a metal or metalloid oxide.
Claim 7
Dependent Claim
20 words
Attachment in accordance with claim 5, characterized by the fact that the interference layer (14) consists of SiO 2 .
Claim 8
Dependent Claim
39 words
Attachment in accordance with claim 1, characterized by the fact that an adhesive layer (16, 18) is located between the glass pane (10) and the metal layer (12) and between the metal layer (12) and the interference layer (14).
Claim 9
Dependent Claim
25 words
Attachment in accordance with claim 7, wherein said adhesive layer is one material form the group consisting of NiCr, silicon, indium oxide and indium-tin oxide.
Claim 10
Dependent Claim
32 words
Attachment in accordance with claim 1, characterized by the fact that at least a part of the layers (12, 14, 16, 18) of the antireflective coating is produced by magnetron cathode sputtering.
References Cited (Backward Citations)
US3532919A
Cited
US3720541A
Cited
US3935351A
Cited
US4235048A
Cited
US4468420A
Cited
US4882212A
Cited
EP0293470A1
Cited
US4926090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-21 | 1997-08-23 | 1998-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-21 | 2001-08-23 | 2002-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-21 | 2005-08-23 | 2006-02-22 | $7700.00 | Window Closed / Lapsed |