Patent USRE28630E successfully refreshed from Google Patents.
USRE28630E
Expired / Lapsed
US
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Data handling system with screen made of fiber optic light pipes containing photochromic material
Assignee: —
•
Filing: 1974-06-19
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Granted: 1975-11-25
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Expires: 1994-06-19
Abstract
Abstract A screen for an electron discharge device wherein a target formed of a plurality of fiber optic light pipes is made of a composition including a photochromic material and is selectively subjected to ultraviolet or similar radiation so as to prevent passage of visible light through certain light pipes.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:55
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/14; G; G11; G11C; G11C13/00; G11C13/04; G11C13/041; H01J29/12; H01J29/18; H01J29/24; H01J31/00; H01J31/08; H01J31/26; H01J31/265; H01J31/58; H01J31/60; H01J31/62; H01J31/64
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
149 words
In combination, a screen comprising a target electrode formed of a fiber optic element including a plurality of light pipes made of a composition containing a material which attenuates the transmission of electromagnetic radiation of a first frequency upon being exposed to electromagnetic radiation of a second frequency higher than said first frequency, reading means exposing said light pipes to said electromagnetic radiation of said first frequency for transmission therethrough, writing means for selectively causing certain of said light pipes to be exposed to said electromagnetic radiation of said second frequency to selectively cause electromagnetic radiations of said first frequency emanating from said reading means to be absorbed in said certain one of said light pipes while permitting said radiations to pass through the other light pipes, and output means for indicating which light pipes have absorbed said electromagnetic radiation of said first frequency to produce informational output signals.
Claim 2
Dependent Claim
149 words
In combination, a screen comprising a target electrode formed of a fiber optic element including a plurality of light pipes made of a composition containing a material which attenuates the transmission of electromagnetic radiation of a first frequency upon being exposed to electromagnetic radiation of a second frequency higher than said first frequency, reading means exposing said light pipes to said electromagnetic radiation of said first frequency for transmission therethrough, writing means for selectively causing certain of said light pipes to be exposed to said electromagnetic radiation of said second frequency to selectively cause electromagnetic radiations of said first frequency emanating from said reading means to be absorbed in said certain one of said light pipes while permitting said radiations to pass through the other light pipes, and output means for indicating which light pipes have absorbed said electromagnetic radiation of said first frequency to produce informational output signals.
Claim 3
Dependent Claim
31 words
The combination as set forth in claim 1 wherein said reading means includes means for simultaneously subjecting substantially all of said light pipes to said electromagnetic radiation of said first frequency.
Claim 4
Dependent Claim
29 words
The combination as set forth in claim 1 wherein said reading means includes means for scanning said screen with a spot of said electromagnetic radiation of a first frequency.
Claim 5
Dependent Claim
53 words
The combination as set forth in claim 1 wherein said writing means includes a coating of phosphor affixed to one surface of said target electrode for emitting electromagnetic radiation of said second frequency upon being subjected to a stream of electrons, and means for subjecting said phosphor coating to said stream of electrons.
Claim 6
Dependent Claim
53 words
The combination as set forth in claim 2 wherein said writing means includes a coating of phosphor affixed to a surface of said target electrode for emitting electromagnetic radiation of said second frequency upon being subjected to a stream of electrons, and means for subjecTing said phosphor coating to said stream of electrons.
Claim 7
Dependent Claim
53 words
The combination as set forth in claim 3 wherein said writing means includes a coating of phosphor affixed to a surface of said target electrode for emitting electromagnetic radiation of said second frequency upon being subjected to a stream of electrons, and means for subjecting said phosphor coating to said stream of electrons.
Claim 8
Dependent Claim
157 words
A screen comprising a target electrode formed of a fiber optic element including a plurality of light pipes made of a composition containing a photochromic material which attenuates the transmission of electromagnetic radiation of a first frequency within the visible spectrum upon being exposed to electromagnetic radiation of a second frequency higher than said first frequency, reading means exposing said light pipes to said electromagnetic radiation of said first frequency within said visible spectrum for transmission therethrough, writing means for selectively causing certain ones of said light pipes to be exposed to said electromagnetic radiation of said second frequency to selectively cause electromagnetic radiations of said first frequency emanating from said reading means to be absorbed in said certain ones of said light pipes while permitting said radiations to pass through the other light pipes, and output means for indicating which light pipes have absorbed said electromagnetic radiation of said first frequency to produce informational output signals.
Claim 9
Dependent Claim
157 words
A screen comprising a target electrode formed of a fiber optic element including a plurality of light pipes made of a composition containing a photochromic material which attenuates the transmission of electromagnetic radiation of a first frequency within the visible spectrum upon being exposed to electromagnetic radiation of a second frequency higher than said first frequency, reading means exposing said light pipes to said electromagnetic radiation of said first frequency within said visible spectrum for transmission therethrough, writing means for selectively causing certain ones of said light pipes to be exposed to said electromagnetic radiation of said second frequency to selectively cause electromagnetic radiations of said first frequency emanating from said reading means to be absorbed in said certain ones of said light pipes while permitting said radiations to pass through the other light pipes, and output means for indicating which light pipes have absorbed said electromagnetic radiation of said first frequency to produce informational output signals.
Claim 10
Dependent Claim
93 words
A screen including a plurality of light pipes containing a photochromic material which attenuates the transmission of visible light upon being exposed to ultraviolet light, reading means for exposing said light pipes to said visible light, writing means for selectively causing certain ones of said light pipes to be exposed to said ultraviolet light to selectively cause visible light emanating from said reading means to be absorbed in said certain ones of said light pipes, and output means for indicating which light pipes have absorbed said visible light to produce a visible image.
Claim 11
Dependent Claim
93 words
A screen including a plurality of light pipes containing a photochromic material which attenuates the transmission of visible light upon being exposed to ultraviolet light, reading means for exposing said light pipes to said visible light, writing means for selectively causing certain ones of said light pipes to be exposed to said ultraviolet light to selectively cause visible light emanating from said reading means to be absorbed in said certain ones of said light pipes, and output means for indicating which light pipes have absorbed said visible light to produce a visible image.
Claim 12
Dependent Claim
27 words
The combination as set forth in claim 8 wherein said reading means includes means for simultaneously subjecting substantially all of said light pipes to said visible light.
Claim 13
Dependent Claim
25 words
The combination as set forth in claim 8 wherein said reading means includes means for scanning said screen with a spot of said visible light.
Claim 14
Dependent Claim
49 words
The combination as set forth in claim 8 wherein said writing means includes a coating of phosphor affixed to one surface of said target electrode for emitting ultraviolet light upon being subjected to a stream of electrons, and means for subjecting said phosphor coating to said stream of electrons.
Claim 15
Dependent Claim
53 words
The combination as set forth in claim 9 wherein said writing means includes a coating of phosphor affixed to one surface of said target electrode for emitting electromagnetic radiation of said second frequency upon being bombarded by a stream of electrons, and means for subjecting said phosphor coating to said stream of electrons.
Claim 16
Dependent Claim
53 words
The combination as set forth in claim 10 wherein said writing means includes a coating of phosphor affixed to one surface of said target electrode for emitting electromagnetic radiation of said second frequency upon being subjected to a stream of electrons, and means for subjecting said phosphor coating to said stream of electrons.
References Cited (Backward Citations)
US3124715A
Cited
US2969474A
Cited
US2979632A
Cited
US3085469A
Cited
US3134297A
Cited
US3218390A
Cited
US3225138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |