Patent US4446426A successfully refreshed from Google Patents.
Patent US4310876A successfully refreshed from Google Patents.
US4310876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture and method using multiple reflections
Assignee: Individual
•
Filing: 1980-03-17
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Granted: 1982-01-12
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Expires: 2000-03-17
Abstract
Abstract A lighting fixture and method using multiple reflections having a housing with an open side. A lamp is mounted in the housing and produces rays of light which pass through the open side. First and second reflecting surfaces are carried by the housing for reflecting light. The first and second reflecting surfaces are positioned on opposite sides of the lamp so that direct rays from the lamp will strike the first reflecting surface and be reflected onto the second reflecting surface and then will be reflected through the open side of the housing at a high angle with respect to the angle of the original direct rays from the lamp.
Inventors
- 👤 Edward A. Small, Jr.
- 👤 Ian Lewin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:45
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/08; F21S8/085; F21S8/088; F21V; F21V7/00; F21V7/22; F21V7/24; F21V7/28; F21W; F21W2131/00; F21W2131/10; F21W2131/103; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
159 words
In a method for producing light at a high angle from a lighting fixture with an open side and having a lamp therein, providing first and second reflectors having a metal layer and a multi layer high reflectivity coating carried on the metal layer and formed of materials having high and low indices of refraction to provide a reflectivity which does not fall below 95% for any light angle positioning said first and second reflectors on opposite ends of the lamp so that direct rays from the lamp are reflected by the first reflector to the second reflector and so that light impinging on the second reflector is reflected through the open side at a high angle of 70° and greater with respect to vertical and thereby reducing the quantity of direct light from the light fixture and increasing the light emitted from the lighting fixture at the high angle so as to reduce glare from the lighting fixture.
Claim 2
Dependent Claim
159 words
In a method for producing light at a high angle from a lighting fixture with an open side and having a lamp therein, providing first and second reflectors having a metal layer and a multi layer high reflectivity coating carried on the metal layer and formed of materials having high and low indices of refraction to provide a reflectivity which does not fall below 95% for any light angle positioning said first and second reflectors on opposite ends of the lamp so that direct rays from the lamp are reflected by the first reflector to the second reflector and so that light impinging on the second reflector is reflected through the open side at a high angle of 70° and greater with respect to vertical and thereby reducing the quantity of direct light from the light fixture and increasing the light emitted from the lighting fixture at the high angle so as to reduce glare from the lighting fixture.
Claim 3
Dependent Claim
45 words
A method as in claim 1 together with providing an intermediate reflector and using the intermediate reflector for reflecting direct rays of light from the lamp and for reflecting the same onto the second reflector and thence from the lighting fixture at the high angle.
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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) | 1985-01-11 | 1985-07-13 | 1986-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-11 | 1989-07-13 | 1990-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-11 | 1993-07-13 | 1994-01-12 | $7700.00 | Window Closed / Lapsed |