US4766526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light source
Assignee: Futaba Corp
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Filing: 1986-07-07
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Granted: 1988-08-23
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Expires: 2006-07-07
Abstract
Abstract A light source which is capable of improving lightening efficiency is disclosed. The light source includes a phosphor layer provided at a part of a filter arranged adjacent to a light emitting lamp or arranged so as to serve as a reflection layer so that it may transmit light of the lamp required and be excited by a part of light of the lamp to emit light of a visible region to increase the intensity of light discharged from the light source.
Inventors
- 👤 Kiyoshi Morimoto
- 👤 Hitoshi Toki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:04
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/28; H01K1/32; F; F21; F21V; F21V13/00; F21V13/02; F21V13/08; F21V9/00; F21V9/30; F21V9/32
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
68 words
A light source comprising: a lamp; a lamp holder means for receiving said lamp therein and reflecting light produced from said lamp; a cover glass for said lamp; and a filter containing phosphor layer for emitting light of visible region to be excited by said lamp, said filter being arranged to adjacent to said lamp, wherein said filter allows light to pass in the range of 500-700 nm.
Claim 2
Dependent Claim
68 words
A light source comprising: a lamp; a lamp holder means for receiving said lamp therein and reflecting light produced from said lamp; a cover glass for said lamp; and a filter containing phosphor layer for emitting light of visible region to be excited by said lamp, said filter being arranged to adjacent to said lamp, wherein said filter allows light to pass in the range of 500-700 nm.
Claim 3
Dependent Claim
20 words
The light source as defined in claim 1, wherein said filter containing phosphor is deposited on a light permeable material.
Claim 4
Dependent Claim
22 words
The light source as defined in claim 2, wherein said filter containing phosphor is arranged on an outer periphery of said lamp.
Claim 5
Dependent Claim
22 words
The light source as defined in claim 2, wherein said filter contain phosphor is arranged between said lamp and said cover glass.
Claim 6
Dependent Claim
40 words
The light source as defined in claim 1 further comprising: a second phosphor layer for emitting light of visible region to be excited by said lamp, said phosphor layer being deposited on an inner peripheral surface of said lamp holder.
Claim 7
Dependent Claim
23 words
The light source as defined in claim 1 wherein said filter containing phosphor is deposited on an inner surface of said cover glass.
Claim 8
Dependent Claim
22 words
The light source as defined in claim 1 wherein said phosphor filter containing is deposited on an outer surface of said lamp.
Claim 9
Dependent Claim
45 words
A light source comprising: a lamp; a lamp holder means for receiving said lamp therein and reflecting light produced from said lamp; and a filter cover glass for said lamp, said filter cover glass containing a phosphor emitting light in the range of 500-700 nm.
Claim 10
Dependent Claim
45 words
A light source comprising: a lamp; a lamp holder means for receiving said lamp therein and reflecting light produced from said lamp; and a filter cover glass for said lamp, said filter cover glass containing a phosphor emitting light in the range of 500-700 nm.
Claim 11
Dependent Claim
68 words
A light source comprising: a lamp; a lamp holder means for receiving said lamp therein and reflecting light produced from said lamp; a filter cover glass for said lamp having predetermined spectral transmittance characteristics; and a phosphor layer in direct contact with said filter cover for emitting light in the range of 500-700 nm, said phosphor layer being deposited on an inner peripheral surface of said lamp holder.
Claim 12
Dependent Claim
68 words
A light source comprising: a lamp; a lamp holder means for receiving said lamp therein and reflecting light produced from said lamp; a filter cover glass for said lamp having predetermined spectral transmittance characteristics; and a phosphor layer in direct contact with said filter cover for emitting light in the range of 500-700 nm, said phosphor layer being deposited on an inner peripheral surface of said lamp holder.
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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) | 1991-08-23 | 1992-02-22 | 1992-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-23 | 1996-02-22 | 1996-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-23 | 2000-02-22 | 2000-08-23 | $7700.00 | Window Closed / Lapsed |