US3619603A - Street-lighting luminaire - Google Patents
Street-lighting luminaire Download PDFInfo
- Publication number
- US3619603A US3619603A US824743A US3619603DA US3619603A US 3619603 A US3619603 A US 3619603A US 824743 A US824743 A US 824743A US 3619603D A US3619603D A US 3619603DA US 3619603 A US3619603 A US 3619603A
- Authority
- US
- United States
- Prior art keywords
- light
- area
- refractor
- including means
- horizontal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
Definitions
- the luminaire has a refractor which directs light from a light source onto a road, and this refractor has a first area for lifting light toward a beam direction under the horizontal and includes a cutoff prism structure for limiting the lateral distribution of this light to approximately 60.
- the refractor has a second area for transmitting light, with substantially no effect thereon, over a lateral distribution spread substantially through a 90 fan.
- the refractor also has a third area for directing light above the horizontal and also having a cutoff prism structure for limiting the lateral spread of light to approximately 60. With this construction, the light distribution will assist in three-dimensional delineation of automobiles on a highway.
- This invention relates to street lighting, and more particularly, to luminaires therefor.
- FIGS. 1 and 2 are diagrammatic views of prior art rail units, viewed transversely of the roadway;
- FIG. 3 shows a lateral distribution of light achieved by prior art systems
- FIG. 4 is a diagrammatic view of a luminaire according to the present invention and schematically showing a refractor for use therein, the view is similar to FIGS. 1 and 2, being transversely of the roadway.
- This invention describes a novel lighting system and a prismatic lens to produce it.
- This new system proposes to provide this good near 90 direction light, hold it below the horizon and at the same time across the road in lateral directions, say to around 60. It proposes to let some light out above the horizontal to light the tops of the cars.
- the new lens system is described as follows:
- area X" turns the light up to beam direction just under the horizontal but, as mentioned before, this light as it fans out toward around 90 will go above horizontal. To avoid this we must limit the light laterally to say around 60 by out- 0 side vertical cutoff prisms P,.
- area Y contains no lifting prisms and is in essence a nonvertically acting zone on the lens. This light can be let directly out without outside laterally limiting prisms so the fan of light will be almost a complete fan. This, then, provides the very useful near 90' light" so essential for producing good roadway brightness and silhouette seeing.
- the area 2" can be assigned to let light out above the horizontal to light the tops of cars for good threedimensional recognition. Again, if this light were allowed to spread itself to near 90 lateral it would be in the motorists eyes. We must, therefore, limit this light to say around 60 lateral by the vertical (or essentially vertical) cutofi prisms P, on the outer surface.
- a refractor for directing light from a light source onto a road comprising a first area, including means for lifting light toward a beam direction just under the horizontal and including cutofi' prism means for limiting the lateral distribution thereof to approximately 60, said refractor including a second area including means for transmitting light with substantially no effect thereupon, over a lateral distribution spread substantially through a plus or minus 90 fan, said refractor having a third area including means for directing light above the horizontal, said last-mentioned area also including means for limiting the lateral spread of light to within approximately 60.
- a refractor for directing light from a light source onto a road comprising a first area, including means for lifting light toward a beam direction just under the horizontal and including means for limiting the lateral distribution thereof to approximately 60", and including a second area including means for transmitting light with substantially no effect thereupon over a lateral distribution spread substantially through a plus or minus 90 fan, and including a third area including means for directing light above the horizontal and said third area further including means for limiting the lateral spread of light to within approximately 60.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Road Signs Or Road Markings (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US82474369A | 1969-05-07 | 1969-05-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3619603A true US3619603A (en) | 1971-11-09 |
Family
ID=25242200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US824743A Expired - Lifetime US3619603A (en) | 1969-05-07 | 1969-05-07 | Street-lighting luminaire |
Country Status (1)
Country | Link |
---|---|
US (1) | US3619603A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4180849A (en) * | 1976-08-18 | 1979-12-25 | The Ever Ready Company (Great Britain) Limited | Pedal cycle headlamp |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB389583A (en) * | 1931-12-14 | 1933-03-23 | Gen Electric Co Ltd | Improvements in refractors for directing light |
US2566126A (en) * | 1947-08-19 | 1951-08-28 | Holophane Co Inc | Street lighting luminaire |
GB788860A (en) * | 1955-01-14 | 1958-01-08 | Gen Electric Co Ltd | Improvements in or relating to lighting fittings |
US3191022A (en) * | 1962-03-01 | 1965-06-22 | Holophane Co Inc | Luminaire |
US3249750A (en) * | 1963-04-01 | 1966-05-03 | Holophane Co Inc | Street lighting luminaire |
US3250913A (en) * | 1963-09-17 | 1966-05-10 | Holophane Co Inc | Luminaire |
-
1969
- 1969-05-07 US US824743A patent/US3619603A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB389583A (en) * | 1931-12-14 | 1933-03-23 | Gen Electric Co Ltd | Improvements in refractors for directing light |
US2566126A (en) * | 1947-08-19 | 1951-08-28 | Holophane Co Inc | Street lighting luminaire |
GB788860A (en) * | 1955-01-14 | 1958-01-08 | Gen Electric Co Ltd | Improvements in or relating to lighting fittings |
US3191022A (en) * | 1962-03-01 | 1965-06-22 | Holophane Co Inc | Luminaire |
US3249750A (en) * | 1963-04-01 | 1966-05-03 | Holophane Co Inc | Street lighting luminaire |
US3250913A (en) * | 1963-09-17 | 1966-05-10 | Holophane Co Inc | Luminaire |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4180849A (en) * | 1976-08-18 | 1979-12-25 | The Ever Ready Company (Great Britain) Limited | Pedal cycle headlamp |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HOLAPHANE COMPANY, INC., A CORP. OF DE. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MANVILLE SALES CORPORATION, A CORP. OF DE;REEL/FRAME:005125/0574 Effective date: 19890630 Owner name: WELLS FARGO BANK, N.A., Free format text: SECURITY INTEREST;ASSIGNOR:HOLOPHANE COMPANY, INC.;REEL/FRAME:005221/0095 Effective date: 19890620 |
|
AS | Assignment |
Owner name: MANVILLE SERVICE CORPORATION Free format text: MERGER;ASSIGNOR:MANVILL SALES CORPORATION;REEL/FRAME:005253/0520 Effective date: 19890605 Owner name: MANVILLE BUILDING MATERIALS CORPORATION (MERGED IN Free format text: MERGER;ASSIGNOR:MANVILL SALES CORPORATION;REEL/FRAME:005253/0520 Effective date: 19890605 Owner name: JOHNS-MANVILLE SALES CORPORATION (CHANGED TO) Free format text: MERGER;ASSIGNOR:MANVILL SALES CORPORATION;REEL/FRAME:005253/0520 Effective date: 19890605 Owner name: MANVILLE PRODUCTS CORPORATION Free format text: MERGER;ASSIGNOR:MANVILL SALES CORPORATION;REEL/FRAME:005253/0520 Effective date: 19890605 |
|
AS | Assignment |
Owner name: WELLS FARGO BANK, N.A., AS AGENT, CALIFORNIA Free format text: FIRST AMENDMENT TO PATENT SECURITY AGREEMENT AND SECOND AMENDMENT TO SUPPLEMENTAL PATENT SECURITY AGREEMENT;ASSIGNOR:HOLOPHANE CORPORATION, SUCCESSOR BY MERGER TO HOLOPHANE LIGHTING, INC., A DELAWARE CORPORATION;REEL/FRAME:007534/0221 Effective date: 19950331 |
|
AS | Assignment |
Owner name: HOLOPHANE CORPORATION (SUCCESSOR BY MERGER TO HOLO Free format text: RELEASE OF PATENT AGREEMENTS;ASSIGNOR:WELLS FARGO BANK, N.A., AS AGENT;REEL/FRAME:009314/0787 Effective date: 19980323 |