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
IT500078D 1952-03-04 IT500078A (xx)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
IT500078A true IT500078A (xx)

Family

ID=19783656

Family Applications (1)

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

Country Status (7)

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

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 (xx) *
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 (xx) * 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
US2362175A (en) * 1943-03-25 1944-11-07 Swanson Harold Piped light full-beam electric lamp
US2362176A (en) * 1943-03-25 1944-11-07 Swanson Harold Flashlight full-beam electric lamp
NL69920C (xx) * 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
GB728541A (en) 1955-04-20
DE942341C (de) 1956-05-03
BE518131A (xx)

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