US4626694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image intensifier
Assignee: Toshiba Corp
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Filing: 1983-12-23
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Granted: 1986-12-02
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Expires: 2003-12-23
Abstract
Abstract An image intensifier has a phosphor screen, the phosphor screen having a mesh-like substrate and a phosphor layer supported by the mesh-like substrate and to be excited by electron rays. The image intensifier provides an output image with high contrast and brightness.
Inventors
- 👤 Tetsu Sano
- 👤 Hidero Anno
- 👤 Yuichiro Kume
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:24
CPC Classifications
G; G21; G21K; G21K4/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
49 words
A screen arrangement means for an image intensifier comprising: an output screen constituted by a mesh-like substrate having an electron ray incident side and a light emitting side, and a phosphor layer supported by said light emitting side of said mesh-like substrate and susceptible to excitation by electron rays.
Claim 2
Dependent Claim
49 words
A screen arrangement means for an image intensifier comprising: an output screen constituted by a mesh-like substrate having an electron ray incident side and a light emitting side, and a phosphor layer supported by said light emitting side of said mesh-like substrate and susceptible to excitation by electron rays.
Claim 3
Dependent Claim
62 words
A screen arrangement means according to claim 1, wherein said mesh-like substrate comprises a member selected from the group consisting of: aluminum, titanium, nickel, copper, beryllium, cobalt, iron, chromium, zirconium, molybdenum, palladium, silver, tantalum, tungsten, platinum, carbon, and gold; an alloy or, a compound or, a synthetic resin thereof; or a composite material comprising at least two elements selected from the members.
Claim 4
Dependent Claim
36 words
A screen arrangement means according to claim 1, wherein said light emitting side of said mesh-like substrate has a metal film thereon, said phosphor layer being formed on a light emitting side of said metal film.
Claim 5
Dependent Claim
26 words
A screen arrangement means according to claim 4, wherein said metal film has a property for reflecting light emitted from a phosphor of said phosphor layer.
Claim 6
Dependent Claim
26 words
A screen arrangement means according to claim 4, wherein said metal film has a property for absorbing light emitted from a phosphor of said phosphor layer.
Claim 7
Dependent Claim
20 words
A screen arrangement means according to claim 1, wherein said phosphor layer has a surface coated with a silicon compound.
Claim 8
Dependent Claim
18 words
A screen arrangement means according to claim 1, wherein said mesh-like substrate is embedded in said phosphor layer.
Claim 9
Dependent Claim
29 words
A screen arrangement means according to claim 1, wherein said mesh-like substrate has a surface having a property for reflecting light emitted from a phosphor of said phosphor layer.
Claim 10
Dependent Claim
29 words
A screen arrangement means according to claim 1, wherein said mesh-like substrate has a surface having a property for transmitting light emitted from a phosphor of said phosphor layer.
Claim 11
Dependent Claim
26 words
A screen arrangement means according to claim 1, wherein said mesh-like substrate has a mesh number to fall within a range between 400 and 12,000 mesh/inch.
Claim 12
Dependent Claim
25 words
A screen arrangement means according to claim 1, wherein said phosphor layer has a film thickness falling within a range between 1 and 50 μm.
Claim 13
Dependent Claim
17 words
A screen arrangement means according to claim 1, wherein said phosphor layer is formed by vacuum evaporation.
Claim 14
Dependent Claim
17 words
A screen arrangement means according to claim 1, wherein said phosphor layer is formed by vapor growth.
Claim 15
Dependent Claim
38 words
A screen arrangement means according to claim 1, wherein said phosphor layer comprises a phosphor selected from the group consisting of an alkali metal halide phosphor, a rare earth phosphor, a II-VI group element phosphor, an oxide phosphor.
Claim 16
Dependent Claim
56 words
A screen arrangement means for an image intensifier comprising: an output screen constituted by a mesh-like substrate having an electron ray incident side and a light emitting side, a phosphor layer supported by said light emitting side of said mesh-like substrate, and a metal film formed on an electron ray incident side of said phosphor layer.
Claim 17
Dependent Claim
56 words
A screen arrangement means for an image intensifier comprising: an output screen constituted by a mesh-like substrate having an electron ray incident side and a light emitting side, a phosphor layer supported by said light emitting side of said mesh-like substrate, and a metal film formed on an electron ray incident side of said phosphor layer.
Claim 18
Dependent Claim
77 words
A screen arrangement means for an image intensifier comprising an output phosphor screen having an electron ray incident surface and light emitting surface, said output phosphor screen including a mesh-like substrate, a phosphor layer supported by said mesh-like substrate, and a metal film formed on an electron ray incident side with respect to said phosphor layer, said light emitting surface of said output phosphor screen being constituted as a whole by one surface of said phosphor layer.
Claim 19
Dependent Claim
77 words
A screen arrangement means for an image intensifier comprising an output phosphor screen having an electron ray incident surface and light emitting surface, said output phosphor screen including a mesh-like substrate, a phosphor layer supported by said mesh-like substrate, and a metal film formed on an electron ray incident side with respect to said phosphor layer, said light emitting surface of said output phosphor screen being constituted as a whole by one surface of said phosphor layer.
Claim 20
Dependent Claim
17 words
A screen arrangement means according to claim 1 wherein said phosphor layer is a transparent crystal phosphor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-01 | 1990-06-02 | 1990-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-01 | 1994-06-02 | 1994-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-01 | 1998-06-02 | 1998-12-02 | $7700.00 | Window Closed / Lapsed |