US4091441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Full-spectrum luminaire
Assignee: John Ott Laboratories Inc
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Filing: 1977-11-04
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Granted: 1978-05-23
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Expires: 1997-11-04
Abstract
Abstract An improved full-spectrum luminaire utilizing a plurality of gas discharge lamps at least one of which produces radiant energy primarily in the near-ultraviolet range and another produces radiant energy primarily in the visible range. The spectral energy distribution characteristics of the lamps are chosen so that their combined radiation simulates natural daylight in both the ultraviolet and visible light ranges. The ultraviolet radiation may be switched off manually or automatically.
Inventors
- 👤 John Nash Ott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:43
CPC Classifications
F; F21; F21V; F21V9/00; F21V9/02; A; A61; A61N; A61N5/00; A61N5/06; A61N5/0613; A61N5/0618; A61N2005/0658; A61N2005/0661
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
138 words
A full-spectrum luminaire comprising: first and second types of gas discharge lamps arranged when energized to project the combined light produced by said lamps into an area to be illuminated the first type of lamp having a predetermined spectral energy distribution characteristic producing radiant energy primarily in the visible range and the second type of lamp having a predetermined spectral energy distribution characteristic producing radiant energy primarily, but not entirely, in the near ultraviolet range, with a peak output at approximately 360 nanometers, said second type of lamp having an output overlapping that of the first lamp in a wavelength band of approximately 350 to 475 nanometers whereby the combined light output of the lamps produced by the luminaire has a spectral energy distribution characteristic approximating that of natural daylight in both the near ultraviolet and visible ranges.
Claim 2
Dependent Claim
138 words
A full-spectrum luminaire comprising: first and second types of gas discharge lamps arranged when energized to project the combined light produced by said lamps into an area to be illuminated the first type of lamp having a predetermined spectral energy distribution characteristic producing radiant energy primarily in the visible range and the second type of lamp having a predetermined spectral energy distribution characteristic producing radiant energy primarily, but not entirely, in the near ultraviolet range, with a peak output at approximately 360 nanometers, said second type of lamp having an output overlapping that of the first lamp in a wavelength band of approximately 350 to 475 nanometers whereby the combined light output of the lamps produced by the luminaire has a spectral energy distribution characteristic approximating that of natural daylight in both the near ultraviolet and visible ranges.
Claim 3
Dependent Claim
40 words
The luminaire of claim 1 including a housing having a light-emitting opening, the lamps being tubular and mounted within the housing in parallel spaced relation so as to project light uniformly through said opening into the area to be illuminated.
Claim 4
Dependent Claim
25 words
The luminaire of claim 2 including a reflector mounted within said housing and arranged to reflect the combined light from said lamps through said opening.
Claim 5
Dependent Claim
24 words
The luminaire of claim 3 wherein the reflector is formed of a material which reflects radiation in both the near-ultraviolet and visible wavelength bands.
Claim 6
Dependent Claim
17 words
The luminaire of claim 4 wherein the reflecting surface of the reflector is formed of polished aluminum.
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) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |