ZA828952B - Rotationally symmetric street lighting fixture having a widespread beam angle - Google Patents

Rotationally symmetric street lighting fixture having a widespread beam angle

Info

Publication number
ZA828952B
ZA828952B ZA828952A ZA828952A ZA828952B ZA 828952 B ZA828952 B ZA 828952B ZA 828952 A ZA828952 A ZA 828952A ZA 828952 A ZA828952 A ZA 828952A ZA 828952 B ZA828952 B ZA 828952B
Authority
ZA
South Africa
Prior art keywords
axis
lamp
symmetry
outer diameter
reflector
Prior art date
Application number
ZA828952A
Inventor
Reiner Pusch
Original Assignee
Siemens Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of ZA828952B publication Critical patent/ZA828952B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
    • F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/06—Optical design with parabolic curvature

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

1. A broad-beam axially symmetrical street lamp having three reflectors (1, 2, 3) in the form of surfaces of rotation, which are arranged above one another around the axis of symmetry (A) of the street lamp, which respectively have a lamp opening in the centre and which reflect the light of the lamp (L) away from the axis of symmetry at a high angle, for a lamp which has a translucent bulb and which is so assigned that its longitudinal axis coincides with the axis of symmetry, characterised in that the generatrix for the surfaces of rotation of the three reflectors are sections consisting of confocal parabolas, whose respective focal points (F) lie on the axis of symmetry (A) at the level of the centre point (M) of the heated discharge tube (B) of the lamp (L) and which are determined by the following values (in each case with a tolerance of + or - 10 %) : see diagramm : EP0085145,P4,F1 where f is the focal length, D is the outer diameter of the larger reflector, alpha is the angle of the main axis - measured clock-wise from the axis of symmetry (A) below the focal point (F) - and d is the diameter of the lamp opening, that the outer diameter (a1) of the lowermost reflector (1) ids represented by a1/D = 0,82 + or - 10 %, and that the second reflector (2) has the largest outer diameter (D), whose value is below 300 mm and preferably amounts to 220 mm + or - 10 %.
ZA828952A 1982-02-01 1982-12-06 Rotationally symmetric street lighting fixture having a widespread beam angle ZA828952B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3203284A DE3203284C2 (en) 1982-02-01 1982-02-01 Broad beam, rotationally symmetrical street light

Publications (1)

Publication Number Publication Date
ZA828952B true ZA828952B (en) 1983-12-28

Family

ID=6154483

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA828952A ZA828952B (en) 1982-02-01 1982-12-06 Rotationally symmetric street lighting fixture having a widespread beam angle

Country Status (7)

Country Link
EP (1) EP0085145B1 (en)
AT (1) ATE13714T1 (en)
DE (1) DE3203284C2 (en)
DK (1) DK150757C (en)
GR (1) GR77733B (en)
NO (1) NO159417C (en)
ZA (1) ZA828952B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10222635A1 (en) * 2002-05-17 2003-12-18 Ilias Efthimiou off nozzle
CN101963321B (en) * 2009-07-23 2012-06-27 富士迈半导体精密工业（上海）有限公司 Road illuminating device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE290015C (en) *
DE453026C (en) * 1926-05-26 1927-11-26 Louis Poulsen & Co Reflector arrangement for indirect lighting
US1796468A (en) * 1927-07-26 1931-03-17 Main Georges Incandescent electric lamp
GB448412A (en) * 1934-09-03 1935-03-04 Henri Leroudier An improved projecting apparatus for light or heat rays or sound waves
US3593014A (en) * 1969-01-17 1971-07-13 Gen Signal Corp Low level light fixture

Also Published As

Publication number Publication date
DE3203284C2 (en) 1984-08-02
NO823750L (en) 1983-08-02
GR77733B (en) 1984-09-25
DK150757C (en) 1988-04-05
EP0085145A1 (en) 1983-08-10
NO159417C (en) 1988-12-21
DE3203284A1 (en) 1983-08-18
NO159417B (en) 1988-09-12
DK498382A (en) 1983-08-02
ATE13714T1 (en) 1985-06-15
EP0085145B1 (en) 1985-06-05
DK150757B (en) 1987-06-15

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