sealed beam

sealed beam
A type of electric lamp for producing a beam of light in which the filament is sealed inside a unit consisting of the reflector and lens so as to ensure the alignment of the beam and to protect the reflector from becoming dirty or tarnished.

The new Sealed Beam Headlights are designed to maintain substantially their initial efficiency throughout their life.


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  • Sealed beam — A sealed beam is a type of lamp that includes a reflector and filament as a single assembly, over which a front cover (lens), usually of clear glass, is permanently attached. The previous design was like that of common flashlights (electric… …   Wikipedia

  • sealed-beam — ˈ ̷ ̷| ̷ ̷ adjective : of, relating to, or being an electric light with prefocussed reflector and lens sealed in the lamp vacuum sealed beam automobile headlights * * * sealedˈ beam adjective (of car headlights) consisting of a complete unit… …   Useful english dictionary

  • sealed beam — See sealed beam headlight …   Dictionary of automotive terms

  • Sealed-Beam-Scheinwerfer —   [siːld biːm ], im angloamerikanischen Raum zur Kraftfahrzeugbeleuchtung verwendeter Scheinwerfer, bei dem Spiegelreflektor, Lampe und Streuscheibe eine fest verbundene, integrierte Einheit bilden. Asymmetrisches Abblendlicht (Abblenden) wird… …   Universal-Lexikon

  • Sealed-Beam-Scheinwerfer — Sealed Beam Schein|wer|fer [ si:ldbi:m...] der; s, <zu engl. sealed »versiegelt« (zu to seal »plombieren, abdichten«) u. beam »Lichtstrahl«> im angloamerik. Raum zur Kraftfahrzeugbeleuchtung verwendeter Scheinwerfer, bei dem… …   Das große Fremdwörterbuch

  • sealed-beam headlight — /seeld beem / a headlight in which the reflector and lens are hermetically sealed together with the filament in a single unit. Also called sealed beam. * * * sealed beam headlight «SEELD BEEM», an automobile headlight in which filament, lens, and …   Useful english dictionary

  • sealed-beam headlight — /seeld beem / a headlight in which the reflector and lens are hermetically sealed together with the filament in a single unit. Also called sealed beam. * * * …   Universalium

  • sealed beam unit — See sealed beam headlight …   Dictionary of automotive terms

  • sealed-beam — adjective Date: 1939 being an electric lamp with a prefocused reflector and lens sealed in the lamp vacuum …   New Collegiate Dictionary

  • sealed-beam — adjective denoting a vehicle headlamp with a sealed unit consisting of the light source, reflector, and lens …   English new terms dictionary

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