US5757557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beam-forming lens with internal cavity that prevents front losses
Assignee: Teledyne Technologies Inc
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Filing: 1997-06-09
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Granted: 1998-05-26
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Expires: 2017-06-09
Abstract
Abstract A device for directing light longitudinally forwardly, that comprises a lens body having a front face facing forwardly, rearward body extent, and a curved sidewall extending between the rearward body extent and the front face; a rear cavity in the body, the cavity having a sidewall and a front wall defining a corner; and a light source in the cavity, and characterized in that light rays transmitted by the light source toward the curved sidewall, and toward the corner are collimated forwardly.
Inventors
- 👤 Vladimir Medvedev
- 👤 William A. Parkyn, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:50
CPC Classifications
F; F21; F21L; F21L4/00; F21L4/02; F21L4/022; F21L4/027; F21V; F21V5/00; F21V5/04; F21V7/00; F21V7/0091; G; G02; G02B; G02B19/00; G02B19/0004; G02B19/0028; G02B19/0033; G02B19/0047; G02B6/00; G02B6/0001; G02B6/0005; F21Y; F21Y2115/00; F21Y2115/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
117 words
In a device for directing light longitudinally forwardly, the combination comprising: a) a lens body having a front face facing forwardly, rearward body extent, and a curved sidewall extending between said rearward body extent and said front face, b) a rear cavity in said body, said cavity being free of solid material defined by the body, and having a sidewall and a front wall openly spaced from a glass enclosure, said sidewall and said front wall meeting at a sharp corner, c) and a light source enclosed in said enclosure arranged in said cavity, and characterized in that light rays transmitted by said light source toward said curved sidewall, and toward said sharp corner are collimated forwardly.
Claim 2
Dependent Claim
117 words
In a device for directing light longitudinally forwardly, the combination comprising: a) a lens body having a front face facing forwardly, rearward body extent, and a curved sidewall extending between said rearward body extent and said front face, b) a rear cavity in said body, said cavity being free of solid material defined by the body, and having a sidewall and a front wall openly spaced from a glass enclosure, said sidewall and said front wall meeting at a sharp corner, c) and a light source enclosed in said enclosure arranged in said cavity, and characterized in that light rays transmitted by said light source toward said curved sidewall, and toward said sharp corner are collimated forwardly.
Claim 3
Dependent Claim
26 words
The combination of claim 1 wherein said front face has a portion that is offset toward said cavity and is in forward alignment with said cavity.
Claim 4
Dependent Claim
14 words
The combination of claim 2 wherein said front face offset portion is forwardly convex.
Claim 5
Dependent Claim
24 words
The combination of claim 2 wherein said front face offset portion has lateral dimension exceeding the lateral dimension of forwardmost extent of the cavity.
Claim 6
Dependent Claim
11 words
The combination of claim 1 wherein said cavity sidewall is cylindrical.
Claim 7
Dependent Claim
13 words
The combination of claim 1 wherein said cavity front wall is forwardly concave.
Claim 8
Dependent Claim
12 words
The combination of claim 6 wherein said cavity sidewall is forwardly tapered.
Claim 9
Dependent Claim
18 words
The combination of claim 1 wherein said light source is forwardly offset from rearwardmost extent of said body.
Claim 10
Dependent Claim
14 words
The combination of claim 1 wherein the lens body front face is substantially flat.
Claim 11
Dependent Claim
14 words
The combination of claim 1 wherein the lens body front face is forwardly convex.
Claim 12
Dependent Claim
16 words
The combination of claim 1 wherein the lens body sidewall has cup-shaped configuration and diverges forwardly.
Claim 13
Dependent Claim
16 words
The combination of claim 1 wherein the rear cavity sidewall has cup-shaped configuration and diverges rearwardly.
Claim 14
Dependent Claim
22 words
The combination of claim 1 wherein said body front face defines a recess in forward alignment with said cavity and spaced therefrom.
Claim 15
Dependent Claim
11 words
The combination of claim 1 wherein said sharp corner is circular.
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) | 2001-05-25 | 2001-11-24 | 2002-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-25 | 2005-11-24 | 2006-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-25 | 2009-11-24 | 2010-05-26 | $7700.00 | Window Closed / Lapsed |