US4467193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parabolic light emitter and detector unit
Assignee: CARROLL MANUFACTURING Corp A CORP OF IL
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Filing: 1981-09-14
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Granted: 1984-08-21
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Expires: 2001-09-14
Abstract
Abstract A parabolic light emitter incorporates a solid state light emitter embedded in a transparent body formed with one planar surface and an opposing surface formed as a paraboloid, the outer surface of which is coated with a light reflecting material. In one embodiment, a reflective member is interposed between the light emitter and the planar surface.
Inventors
- 👤 Arthur B. Carroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:15
CPC Classifications
G; G01; G01V; G01V8/00; G01V8/10; G01V8/20; H; H10; H10F; H10F77/00; H10F77/40; H10F77/407; H10W; H10W90/00; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/852; H10H20/853; H10H20/855; H10H20/856; Y; Y10; Y10S; Y10S362/00; Y10S362/80
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
119 words
In a touch input device having a plurality of beams of light generated from individual light surfaces, and a plurality of photosensitive devices for responding to said beams, the combination comprising an elongated body of transparent material, a plurality of optoelectrical devices embedded in said material, said body having an external surface in the form of a plurality of paraboloids, said paraboloids being aligned with their axes of symmetry in parallel, each of said paraboloids being aligned with one of the optoelectrical devices, a reflective coating on the exterior of each of said parabolic surfaces, and said body having a plane surface located on the opposite side of said optoelectrical devices from at least one of said paraboloid surfaces.
Claim 2
Dependent Claim
119 words
In a touch input device having a plurality of beams of light generated from individual light surfaces, and a plurality of photosensitive devices for responding to said beams, the combination comprising an elongated body of transparent material, a plurality of optoelectrical devices embedded in said material, said body having an external surface in the form of a plurality of paraboloids, said paraboloids being aligned with their axes of symmetry in parallel, each of said paraboloids being aligned with one of the optoelectrical devices, a reflective coating on the exterior of each of said parabolic surfaces, and said body having a plane surface located on the opposite side of said optoelectrical devices from at least one of said paraboloid surfaces.
Claim 3
Dependent Claim
22 words
Apparatus according to claim 1, wherein each of said optoelectrical devices has at least one electrical lead passing through its reflective surface.
Claim 4
Dependent Claim
34 words
Apparatus according to claim 1, wherein each of said optoelectrical devices has two electrical leads connected with it, all of said leads passing out through a side of said body adjacent said plane surface.
Claim 5
Dependent Claim
24 words
Apparatus according to claim 1, wherein said plane surface is a single surface located on said opposite side of all of said optoelectrical devices.
Claim 6
Dependent Claim
27 words
Apparatus according to claim 1, wherein said beams are oriented in a plane, and said body is curved about an arc in the plane of said beams.
Claim 7
Dependent Claim
24 words
Apparatus according to claim 5, wherein a plurality of plane surfaces are provided, one for different ones of said optoelectrical devices along said arc.
Claim 8
Dependent Claim
18 words
Apparatus according to claim 6, wherein said plurality of plane surfaces are all normal to their respective beams.
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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) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |