US4398239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminaire adapted for horizontal and vertical operation
Assignee: 2933675 CANADA Inc
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Filing: 1981-03-04
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Granted: 1983-08-09
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Expires: 2001-03-04
Abstract
Abstract A luminaire particularly suited for outdoor applications (e.g., for illuminating roadways and alleyways) and including a two-part housing wherein one of the parts (the base) is metallic and the other (refracting portion) is of lightweight (plastic) material and includes both an opaque chamber for housing the luminaire's lightweight rectangular aluminum reflector and a refracting, multiplanar prismatic lens. The reflector is slidably positioned in the chamber portion and thus readily removable when both parts of the housing are separated. The luminaire is capable of providing a predetermined scheme of light distributions (including IES types II, III, and IV) on the ground therebelow when oriented in either a horizontal or vertical position.
Inventors
- 👤 Hendrik A. J. de Vos
- 👤 Ronald L. Sitzema, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:07
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/08; F21S8/085; F21S8/086
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
153 words
A luminaire comprising: a boxlike, two-part housing; an elongated light source positioned within said housing; a reflector positioned within one of said parts of said housing and adapted for having said elongated light source oriented substantially therein, said reflector including a plurality of reflecting surfaces of different configurations; and a multiplanar, prismatic lens located adjacent said reflector for having both the direct light from said light source and the light reflected by said reflector pass therethrough, each of said reflecting surfaces of said reflector reflecting light from said elongated light source onto predetermined portions of said prismatic lens such that said luminaire will produce a first light distribution below said luminaire when said luminaire is positioned in a substantially horizontal orientation and a second light distribution different from said first light distribution below said luminaire when said luminaire is positioned in a substantially vertical orientation, said luminaire operable in both of said orientations.
Claim 2
Dependent Claim
153 words
A luminaire comprising: a boxlike, two-part housing; an elongated light source positioned within said housing; a reflector positioned within one of said parts of said housing and adapted for having said elongated light source oriented substantially therein, said reflector including a plurality of reflecting surfaces of different configurations; and a multiplanar, prismatic lens located adjacent said reflector for having both the direct light from said light source and the light reflected by said reflector pass therethrough, each of said reflecting surfaces of said reflector reflecting light from said elongated light source onto predetermined portions of said prismatic lens such that said luminaire will produce a first light distribution below said luminaire when said luminaire is positioned in a substantially horizontal orientation and a second light distribution different from said first light distribution below said luminaire when said luminaire is positioned in a substantially vertical orientation, said luminaire operable in both of said orientations.
Claim 3
Dependent Claim
21 words
The luminaire according to claim 1 wherein said light source is a high intensity discharge lamp having an elongated arc length.
Claim 4
Dependent Claim
27 words
The luminaire according to claim 2 wherein said high intensity discharge lamp is selected from the group consisting of high pressure sodium, metal halide, and mercury lamps.
Claim 5
Dependent Claim
48 words
The luminaire according to claim 1 wherein said first light distribution produced by said luminaire while positioned in said substantially horizontal orientation is an I.E.S. type II distribution, and said second light distribution produced by said luminaire in said substantially vertical orientation is an I.E.S. type IV distribution.
Claim 6
Dependent Claim
27 words
The luminaire according to claim 4 wherein said I.E.S. type II distribution is a medium, semi-cutoff distribution, and said I.E.S. type IV distribution is a long distribution.
Claim 7
Dependent Claim
48 words
The luminaire according to claim 1 wherein said first light distribution produced by said luminaire while positoned in said substantially horizontal orientation is an I.E.S. type III distribution, and said second light distribution produced by said luminaire in said substantially vertical orientation is an I.E.S. type IV distribution.
Claim 8
Dependent Claim
27 words
The luminaire according to claim 6 wherein said I.E.S. type III distribution is a medium, semi-cutoff distribution and said I.E.S. type IV distribution is a long distribution.
Claim 9
Dependent Claim
51 words
The luminaire according to claim 1 wherein said reflector is of substantially rectangular configuration having four adjoining reflective side walls and a reflective top wall, said reflector further including a substantially rectangular opening, the light from said light source reflected by said reflective side and top walls passing through said opening.
Claim 10
Dependent Claim
40 words
The luminaire according to claim 8 wherein in profile the internal reflective surfaces of each of said side walls of said reflector are of a substantially parabolic configuration arranged in a plurality of stepped facets along each respective side wall.
Claim 11
Dependent Claim
20 words
The luminaire according to claim 9 wherein in elevation each of said stepped facets is of a substantially parabolic configuration.
Claim 12
Dependent Claim
31 words
The luminaire according to claim 9 wherein said reflector includes four reflective corner portions interconnecting said side walls, the reflective surfaces of each of said corner portions of substantially spherical configuration.
Claim 13
Dependent Claim
38 words
The luminaire according to claim 8 wherein said reflective top wall includes a plurality of individual reflecting elements located therein, each of said elements of substantially cylindrical configuraton in relation to the length of said elongated light source.
Claim 14
Dependent Claim
28 words
The luminaire according to claim 12 wherein said top wall of said reflector further includes a substantially flat reflective surface and a curved surface of substantially spherical configuration.
Claim 15
Dependent Claim
33 words
The luminaire according to claim 1 wherein the number of planar refracting walls of said prismatic lens is four, each of said refracting walls including a plurality of prisms on opposing surfaces thereof.
Claim 16
Dependent Claim
41 words
The luminaire according to claim 14 wherein each of said planar refracting walls performs a double bending of each light ray from said light source and said reflector passing therethrough to direct said light rays onto said distributions below said luminaire.
References Cited (Backward Citations)
US3283140A
Cited
US3377477A
Cited
US3350556A
Cited
US3590238A
Cited
US3561682A
Cited
US3836767A
Cited
US3858042A
Cited
US4337507A
Cited
US4300187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |