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DE942341C - Signal lamp, especially for vehicles - Google Patents

Signal lamp, especially for vehicles

Info

Publication number
DE942341C
DE942341C DEN6826A DEN0006826A DE942341C DE 942341 C DE942341 C DE 942341C DE N6826 A DEN6826 A DE N6826A DE N0006826 A DEN0006826 A DE N0006826A DE 942341 C DE942341 C DE 942341C
Authority
DE
Germany
Prior art keywords
vehicles
signal lamp
focal point
parts
ellipse
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
Application number
DEN6826A
Other languages
German (de)
Inventor
Wilhelm Honing
Jacob Poelma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of DE942341C publication Critical patent/DE942341C/en
Expired legal-status Critical Current

Links

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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/06—Optical design with parabolic curvature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
    • H01K1/325—Reflecting coating

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Angezogene Druckschriften: USA.-Patentschriften 2 362 173, 2 362 175, 362 176;
deutsche Patentschriften Nr. 94 157, 339 849.Cited references: U.S. Patents 2,362,173, 2,362,175, 362,176;
German patents No. 94 157, 339 849.

Hierzu ι Blatt ZeichnungenFor this purpose ι sheet of drawings

© 509 703 4.56© 509 703 4.56

Claims (1)

PATENTANSPRUCH:PATENT CLAIM: Signallampe, insbesondere für Fahrzeuge, mit einem wenigstens zum Teil durch Verspiegelung des Lampenkolbens gebildeten Reflektor, dadurch gekennzeichnet, daß die Form der spiegelnden. Flächen durch Drehung zweier Teile einer Ellipse um eine in dem einen den Glühkörper enthaltenden Brennpunkt -auf der Ellipsenlängsachse senkrecht stehende Gerade gebildet wird, wobei die zu drehenden Ellipsenteile sich ausschließlich von der Umdrehungsachse aus zu der dem anderen Brennpunkt zugekehrten Seite hin erstrecken.Signal lamp, in particular for vehicles, with a mirror coating at least in part of the lamp bulb formed reflector, characterized in that the shape of the reflective. Surfaces by rotating two parts an ellipse around one in the one focal point containing the incandescent body -on the Longitudinal axis of the ellipse, vertical straight line is formed, the elliptical parts to be rotated extending exclusively from the axis of rotation extend out to the side facing the other focal point.
DEN6826A 1952-03-04 1953-03-01 Signal lamp, especially for vehicles Expired DE942341C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL311971X 1952-03-04

Publications (1)

Publication Number Publication Date
DE942341C true DE942341C (en) 1956-05-03

Family

ID=19783656

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN6826A Expired DE942341C (en) 1952-03-04 1953-03-01 Signal lamp, especially for vehicles

Country Status (7)

Country Link
US (1) US2799791A (en)
BE (1) BE518131A (en)
CH (1) CH311971A (en)
DE (1) DE942341C (en)
FR (1) FR1072116A (en)
GB (1) GB728541A (en)
IT (1) IT500078A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256456A (en) * 1958-01-09 1966-06-14 Sylvania Electric Prod Reflector incandescent projection lamp
US3018403A (en) * 1958-03-05 1962-01-23 Westinghouse Electric Corp Reflector lamp
US2904714A (en) * 1958-06-16 1959-09-15 Gen Electric Electric lamp
GB904469A (en) * 1960-02-11 1962-08-29 Thorn Electrical Ind Ltd Improvements in and relating to projection lamps
US3162785A (en) * 1960-04-22 1964-12-22 Sylvania Electric Prod Projection lamp
US4280076A (en) * 1978-10-18 1981-07-21 Duro-Test Corporation Incandescent lamp with structure for collecting evaporated filament material
US4446397A (en) * 1981-09-28 1984-05-01 General Electric Company High intensity discharge lamp with infrared reflecting means for improving efficacy
FR2516204A1 (en) * 1981-11-06 1983-05-13 Lampes Sa AUTONOMOUS LIGHTING TERMINAL
US4992695A (en) * 1989-10-10 1991-02-12 Daniel Naum Reflector for high-intensity lamps
US5418420A (en) * 1993-06-22 1995-05-23 Ilc Technology, Inc. Arc lamp with a triplet reflector including a concave parabolic surface, a concave elliptical surface and a convex parabolic surface

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE94157C (en) *
DE339849C (en) * 1919-03-06 1921-08-13 Siemens & Halske Akt Ges Arc irradiation lamp, which is arranged on a column that is expediently adjustable in height
US2362176A (en) * 1943-03-25 1944-11-07 Swanson Harold Flashlight full-beam electric lamp
US2362172A (en) * 1943-03-25 1944-11-07 Swanson Harold Vehicle headlight with integral full-beam electric lamps
US2362175A (en) * 1943-03-25 1944-11-07 Swanson Harold Piped light full-beam electric lamp

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1676300A (en) * 1927-02-21 1928-07-10 Sved Alexander Incandescent electric lamp
BE391856A (en) * 1931-11-16
FR784648A (en) * 1933-12-01 1935-07-22 Flattened and widened beam headlight which can be achieved by a suitably arranged incandescent lamp
US2110590A (en) * 1936-09-11 1938-03-08 Birdseye Electric Corp Reflecting incandescent lamp
US2272186A (en) * 1939-07-19 1942-02-10 Edward P Creehan Radiant energy projector
BE487695A (en) * 1948-03-05

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE94157C (en) *
DE339849C (en) * 1919-03-06 1921-08-13 Siemens & Halske Akt Ges Arc irradiation lamp, which is arranged on a column that is expediently adjustable in height
US2362176A (en) * 1943-03-25 1944-11-07 Swanson Harold Flashlight full-beam electric lamp
US2362172A (en) * 1943-03-25 1944-11-07 Swanson Harold Vehicle headlight with integral full-beam electric lamps
US2362175A (en) * 1943-03-25 1944-11-07 Swanson Harold Piped light full-beam electric lamp

Also Published As

Publication number Publication date
US2799791A (en) 1957-07-16
FR1072116A (en) 1954-09-08
GB728541A (en) 1955-04-20
IT500078A (en)
BE518131A (en)
CH311971A (en) 1955-12-15

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