Patent US5140220A successfully refreshed from Google Patents.
US5140220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light diffusion type light emitting diode
Assignee: Individual
•
Filing: 1988-09-01
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Granted: 1992-08-18
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Expires: 2008-09-01
Abstract
Abstract An improved light emitting diode housing member comprises a transparent housing that can extend over the light emitting surface of the LED and can position a plurality of granular optical particles, such as calcium fluoride, over the source of light to provide a diffusion of the emitted light, thereby increasing its viewing angle.
Inventors
- 👤 Yasuo Hasegawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:21
CPC Classifications
F; F21; F21V; F21V3/00; F21V17/00; F21V17/04; F21V5/00; H; H10; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/852; H10H20/853; F21Y; F21Y2115/00; F21Y2115/10; H10H20/855; Y; Y10; Y10S; Y10S362/00; Y10S362/80
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
121 words
An improved light diffusing light emitting diode assembly comprising: a light emitting device with a light radiating end capable of controlling the direction of a radiated output of light; a transparent hollow housing member mounted on the light emitting device and extending over the light radiating end, and a plurality of granular optical particles positioned within the transparent hollow housing member and extending between the light radiating end and the housing member, the granular optical particles having exposed surfaces within the hollow portion of the housing member for reflecting and refracting light from the light radiating end and also having particle surfaces adhering to the housing member to stationarily fix those optical particles, whereby a diffusion of light can be accomplished.
Claim 2
Dependent Claim
121 words
An improved light diffusing light emitting diode assembly comprising: a light emitting device with a light radiating end capable of controlling the direction of a radiated output of light; a transparent hollow housing member mounted on the light emitting device and extending over the light radiating end, and a plurality of granular optical particles positioned within the transparent hollow housing member and extending between the light radiating end and the housing member, the granular optical particles having exposed surfaces within the hollow portion of the housing member for reflecting and refracting light from the light radiating end and also having particle surfaces adhering to the housing member to stationarily fix those optical particles, whereby a diffusion of light can be accomplished.
Claim 3
Dependent Claim
15 words
The diode assembly of claim 1 wherein the granular particles are formed of calcium fluoride.
Claim 4
Dependent Claim
19 words
The diode assembly of claim 1 wherein the granular particles are approximately 20 to 30 mesh in particle size.
Claim 5
Dependent Claim
19 words
The diode assembly of claim 1 wherein the granular particles are potted in methylene chloride within the housing member.
Claim 6
Dependent Claim
16 words
The diode assembly of claim 1 wherein the housing member has a plurality of planar facets.
Claim 7
Dependent Claim
25 words
The diode assembly of claim 4 wherein the granular particles are formed of calcium fluoride and are secured by methylene chloride within the housing member.
Claim 8
Dependent Claim
144 words
An improved light diffusing light emitting diode assembly comprising: a light emitting base member having a light emitting device mounted in a transparent plastic housing member, the base member including a light radiating end member and a coupling portion extending adjacent to and around the light radiating end member on the plastic housing member; a light diffusing member of a hemispherical hollow core configuration is dimensioned to interface with and is fixed to the coupling portion, and a plurality of granular optical particles positioned within the hollow core and extending between the light radiating end member and the light diffusing member, the granular optical particles having air exposed surfaces within the hollow core of the diffusing member for reflecting and refracting light projecting from the light radiating end and also having particle surfaces adhering to the housing member to stationarily fix the optical particles.
Claim 9
Dependent Claim
144 words
An improved light diffusing light emitting diode assembly comprising: a light emitting base member having a light emitting device mounted in a transparent plastic housing member, the base member including a light radiating end member and a coupling portion extending adjacent to and around the light radiating end member on the plastic housing member; a light diffusing member of a hemispherical hollow core configuration is dimensioned to interface with and is fixed to the coupling portion, and a plurality of granular optical particles positioned within the hollow core and extending between the light radiating end member and the light diffusing member, the granular optical particles having air exposed surfaces within the hollow core of the diffusing member for reflecting and refracting light projecting from the light radiating end and also having particle surfaces adhering to the housing member to stationarily fix the optical particles.
Claim 10
Dependent Claim
13 words
The diode assembly of claim 7 wherein the granular particles are calcium fluoride.
Claim 11
Dependent Claim
19 words
The diode assembly of claim 7 wherein the granular particles are approximately 20 to 30 mesh in particle size.
Claim 12
Dependent Claim
18 words
The diode assembly of claim 7 wherein an exterior envelope of the diffusing member has a multifaceted configuration.
Claim 13
Dependent Claim
178 words
An improved light diffusing light emitting diode assembly consisting of: a single light emitting device with a transparent light radiating end positioned above the light emitting device and capable of controlling the direction of a radiated output of light; a coupling portion integrally positioned on the light radiating end; a transparent hollow housing member mounted on the coupling portion of the light emitting device and extending over the light radiating end, an exterior surface of the housing member has a multifaceted configuration, and a plurality of granular optical particles of approximately 20 to 30 mesh in particles size are positioned within the transparent hollow housing member and extend between the light radiating end and the housing member, the granular optical particles having air exposed surfaces within the hollow portion of the housing member for reflecting and refracting light from the light radiating end and some, but not all of the particles also having a portion of their particle surfaces adhering to the housing member to stationarily fix those optical particles, whereby a diffusion of light can be accomplished.
Claim 14
Dependent Claim
178 words
An improved light diffusing light emitting diode assembly consisting of: a single light emitting device with a transparent light radiating end positioned above the light emitting device and capable of controlling the direction of a radiated output of light; a coupling portion integrally positioned on the light radiating end; a transparent hollow housing member mounted on the coupling portion of the light emitting device and extending over the light radiating end, an exterior surface of the housing member has a multifaceted configuration, and a plurality of granular optical particles of approximately 20 to 30 mesh in particles size are positioned within the transparent hollow housing member and extend between the light radiating end and the housing member, the granular optical particles having air exposed surfaces within the hollow portion of the housing member for reflecting and refracting light from the light radiating end and some, but not all of the particles also having a portion of their particle surfaces adhering to the housing member to stationarily fix those optical particles, whereby a diffusion of light can be accomplished.
Claim 15
Dependent Claim
21 words
The diode assembly of claim 11 wherein the granular particles are embedded into an interior surface of the hollow housing member.
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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) | 1995-08-18 | 1996-02-17 | 1996-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-18 | 2000-02-17 | 2000-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-18 | 2004-02-17 | 2004-08-18 | $7700.00 | Window Closed / Lapsed |