US3597647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament radiation source
Assignee: Smith and Nephew Inc
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Filing: 1969-10-23
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Granted: 1971-08-03
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Expires: 1989-10-23
Abstract
Abstract Filament radiation source in which an elongated collectoremitter rod protrudes through the bulb envelope, with a collector face immediately adjacent the filament inside the envelope and an emitting face spaced substantially beyond the envelope wall. Deposit of filament substance on the collecting face is avoided in light source applications by use of the halogen cycle. The source is shown mounted by the rigid rod for simple, accurate positioning, interfacing at a cool region with fiber optic light pipes. Axisymmetric relation of the collector emitter to the remainder of the bulb enables fitting into small cylindrical housings. Side mounting of the rod enables multiple rods to be employed.
Inventors
- 👤 Michael L Rishton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:04
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/28; H01K1/30; H01K1/52; H01K1/54; H01K7/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
81 words
A source of electromagnetic radiation comprising an envelope, a resistance-heated filament disposed within and spaced inwardly from the walls of the envelope, and an elongated transparent collector-emitter extending through and fused to the envelope, the collector-emitter having a radiation-accepting face, positioned immediately adjacent the filament to collect radiation therefrom and be maintained clean of deposit of filament substance at least in part due to the action of the filament and said collector-emitter having a radiation-emitting face spaced outwardly from said envelope.
Claim 2
Dependent Claim
81 words
A source of electromagnetic radiation comprising an envelope, a resistance-heated filament disposed within and spaced inwardly from the walls of the envelope, and an elongated transparent collector-emitter extending through and fused to the envelope, the collector-emitter having a radiation-accepting face, positioned immediately adjacent the filament to collect radiation therefrom and be maintained clean of deposit of filament substance at least in part due to the action of the filament and said collector-emitter having a radiation-emitting face spaced outwardly from said envelope.
Claim 3
Dependent Claim
55 words
The source of claim 1 wherein said envelope contains a regenerative getter substance adapted to react with particles of filament substance vaporized from the filament to form a filament-getter compound that is subject to disassociation at the filament surface due to the heat thereof, whEreby said filament substance may be deposited back upon the filament.
Claim 4
Dependent Claim
32 words
The source of claim 2 in the form of a halogen-cycle-type light source wherein said filament is comprised of tungsten and said regenerative getter substance comprises a gaseous atmosphere of a halogen.
Claim 5
Dependent Claim
24 words
The source of claim 1 wherein said collector-emitter is of elongated rod form of a cross-sectional area corresponding to the aspect of the filament.
Claim 6
Dependent Claim
54 words
The source of claim 1 adapted to serve as a light source for a fiber optic bundle and including a fitting comprising a clamp portion which engages the outer portion of said collector-emitter and means to relatively position the light-accepting face of the bundle in receiving relation to the light-emitting face of said collector-emitter.
Claim 7
Dependent Claim
41 words
The light source of claim 5 wherein the fibers of said bundle at the accepting face are bonded together by heat-softenable adhesive and said collector-emitter is sufficiently long to provide an outer end cooler than the softening temperature of said adhesive.
Claim 8
Dependent Claim
30 words
The light source of claim 1 wherein the portion of said emitter-collector outside of said envelope comprises a rigid structural member of length sized to be gripped by a clamp.
Claim 9
Dependent Claim
15 words
The light source of claim 7 wherein said collector-emitter is adapted to support said envelope.
Claim 10
Dependent Claim
35 words
The light source of claim 8 wherein said collector-emitter is a rod having a diameter on the order of one-tenth of an inch and a length beyond said envelope on the order of 1 inch.
Claim 11
Dependent Claim
34 words
The light source of claim 7 in combination with a mounting means comprising a clamp portion to engage the outer portion of said collector-emitter and position it to direct light into an optic system.
Claim 12
Dependent Claim
40 words
The source of claim 1 including a base, said envelope having one end secured to the base, said collector-emitter protruding through the portion of the envelope opposite of said base, adapted for mounting in a substantially cylindrical optical system housing.
Claim 13
Dependent Claim
35 words
The source of claim 1 including a base, said envelope having one end secured to the base, a plurality of said collector-emitters, at least one protruding through a sidewall of said envelope adjacent said base.
Claim 14
Dependent Claim
32 words
The source of claim 1 wherein said filament is adapted to emit infrared radiation and said collector-emitter is adapted to transmit and emit said radiation, to serve as a source of heat.
Claim 15
Dependent Claim
38 words
The source of claim 3 wherein said envelope and said collector-emitter are comprised of fused silica or quartz and a substance is associated with said collector-emitter to prevent transmission of infrared and provide a source of cold light.
Claim 16
Dependent Claim
71 words
In combination with an incandescent light source having a rigid collector-emitter rod protruding through and secured to the envelope, and extending outwardly therefrom, a light source device comprising means to releasably grip and position the rigid collector-emitter rod of the light source to expose the light-emitting face thereof and means to releasably grip and position the light-receiving face of a fiber optic bundle in position to receive light from said rod.
Claim 17
Dependent Claim
71 words
In combination with an incandescent light source having a rigid collector-emitter rod protruding through and secured to the envelope, and extending outwardly therefrom, a light source device comprising means to releasably grip and position the rigid collector-emitter rod of the light source to expose the light-emitting face thereof and means to releasably grip and position the light-receiving face of a fiber optic bundle in position to receive light from said rod.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |