IT500078A - - Google Patents

Info

Publication number
IT500078A
IT500078A IT500078DA IT500078A IT 500078 A IT500078 A IT 500078A IT 500078D A IT500078D A IT 500078DA IT 500078 A IT500078 A IT 500078A
Authority
IT
Italy
Application number
Other languages
Italian (it)
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.)
Publication of IT500078A publication Critical patent/IT500078A/it

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)
IT500078D 1952-03-04 IT500078A ( )

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
IT500078A true IT500078A ( )

Family

ID=19783656

Family Applications (1)

Application Number Title Priority Date Filing Date
IT500078D IT500078A ( ) 1952-03-04

Country Status (7)

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

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 (fr) * 1981-11-06 1983-05-13 Lampes Sa Borne autonome d'eclairage
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

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE94157C ( ) *
DE339849C (de) * 1919-03-06 1921-08-13 Siemens & Halske Akt Ges Lichtbogenbestrahlungslampe, die auf einer zweckmaessig in der Hoehe verstellbaren Saeule angeordnet ist
US1676300A (en) * 1927-02-21 1928-07-10 Sved Alexander Incandescent electric lamp
NL37556C ( ) * 1931-11-16
FR784648A (fr) * 1933-12-01 1935-07-22 Phare à faisceau aplati et élargi pouvant être réalisé par une lampe à incandescence convenablement agencée
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
US2362172A (en) * 1943-03-25 1944-11-07 Swanson Harold Vehicle headlight with integral full-beam electric lamps
US2362176A (en) * 1943-03-25 1944-11-07 Swanson Harold Flashlight full-beam electric lamp
US2362175A (en) * 1943-03-25 1944-11-07 Swanson Harold Piped light full-beam electric lamp
NL69920C ( ) * 1948-03-05

Also Published As

Publication number Publication date
CH311971A (de) 1955-12-15
FR1072116A (fr) 1954-09-08
US2799791A (en) 1957-07-16
BE518131A ( )
GB728541A (en) 1955-04-20
DE942341C (de) 1956-05-03

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