US4458303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light beam concentrating, intensifying and filtering device
Assignee: Individual
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Filing: 1982-05-24
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Granted: 1984-07-03
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Expires: 2002-05-24
Abstract
Abstract A light beam concentrating, intensifying and filtering device for use in combination with a parallel ray light source is comprised of a frame having a plurality of shutter leaves capable of opening and closing an aperature when actuated. Each shutter leaf is comprised of a colourless or coloured transparent portion and a portion that is coated on its inner surface with a reflective material.
Inventors
- 👤 Michael S. Berns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:05
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/003; F21L; F21L4/00; F21L4/005; F21S41/00; F21S41/10; F21S41/12; F21S41/125; F21S41/60; F21S41/68; F21S41/683; F21S41/692; F21V; F21V11/00; F21V11/08; F21V11/10; F21V9/00; F21V9/40; F21S41/20; F21S41/285; F21S41/40; F21S41/43; F21V11/16
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
149 words
A light beam concentrating, intensifying and filtering device for use in combination with a parallel ray light beam source comprising: a frame with a aperture therein; a plurality of curved shutter leaves disposed around the circumference of said frame, each said leaf being pivotally connected at one end to said frame and pivotally and slidably connected at the other end to a rotatable ring mounted on said frame co-axial with the center of said aperture; said ring, when rotated, causing said leaves to open or close said aperture; wherein each of said leaves is comprised in part of transparent material and in part of opaque material, such that when said aperture is substantially closed by said leaves, the transparent portions of the said leaves are disposed in the central portion of said aperture and the opaque portions of said leaves are disposed in the remaining portion of said aperture.
Claim 2
Dependent Claim
149 words
A light beam concentrating, intensifying and filtering device for use in combination with a parallel ray light beam source comprising: a frame with a aperture therein; a plurality of curved shutter leaves disposed around the circumference of said frame, each said leaf being pivotally connected at one end to said frame and pivotally and slidably connected at the other end to a rotatable ring mounted on said frame co-axial with the center of said aperture; said ring, when rotated, causing said leaves to open or close said aperture; wherein each of said leaves is comprised in part of transparent material and in part of opaque material, such that when said aperture is substantially closed by said leaves, the transparent portions of the said leaves are disposed in the central portion of said aperture and the opaque portions of said leaves are disposed in the remaining portion of said aperture.
Claim 3
Dependent Claim
23 words
The device of claim 1 wherein said parallel ray light beam source is constituted by a light source backed by a parabolic reflector.
Claim 4
Dependent Claim
55 words
The device of claim 1 wherein said shutter leaves are geometrically disposed in a curvilinear plane and wherein said opaque material is reflecting material, such that light rays reflected from the reflecting portions of said shutter leaves are directed back onto said parabolic reflector and ultimately emerge through the transparent portion of said shutter leaves.
Claim 5
Dependent Claim
55 words
The device of claim 1 wherein said shutter leaves are geometrically disposed in a flat plate and wherein said opaque material is reflecting material, such that light rays reflected from the reflecting portions of said shutter leaves are directed back onto said parabolic reflector and ultimately emerge through the transparent portion of said shutter leaves.
Claim 6
Dependent Claim
26 words
The device of claim 3 wherein said reflecting portions of said shutter leaves reflect only light of a relatively narrow portion of the visible light spectrum.
Claim 7
Dependent Claim
18 words
The device of claim 3 wherein each of said shutter leaves is comprised of only opaque reflective material.
Claim 8
Dependent Claim
17 words
The device of claim 3 wherein each of said shutter leaves is comprised of only transparent material.
Claim 9
Dependent Claim
26 words
The device of claim 4 wherein said reflecting portions of said shutter leaves reflect only light of a relatively narrow portion of the visible light spectrum.
Claim 10
Dependent Claim
18 words
The device of claim 4 wherein each of said shutter leaves is comprised of only opaque reflection material.
Claim 11
Dependent Claim
17 words
The device of claim 4, wherein each of said shutter leaves is comprised on only transparent material.
Claim 12
Dependent Claim
18 words
The device of claim 5 wherein each of said shutter leaves is comprised only of opaque reflective material.
Claim 13
Dependent Claim
18 words
The device of claim 8 wherein each of said shutter leaves is comprised only of opaque reflective material.
Claim 14
Dependent Claim
30 words
The device of claim 7 or claim 10 wherein said transparent material is tinted so as to allow passage of only a relatively narrow portion of the visible light spectrum.
Claim 15
Dependent Claim
34 words
The device of claim 3 or claim 4 wherein at least a part of said reflecting portions of said shutter leaves reflect only light of a relatively narrow portion of the visible light spectrum.
References Cited (Backward Citations)
US3016454A
Cited
US4208100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-03 | 1988-01-02 | 1988-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-03 | 1992-01-02 | 1992-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-03 | 1996-01-02 | 1996-07-03 | $7700.00 | Window Closed / Lapsed |