Dimmed motor vehicle headlight

US4797790A · kind A · utility

Assignee

• Westfalische Metall Industrie KG Huec & Co. · DE

Inventors

• Gunter Brodling · Lippstadt, DE
• Franz Feyerabend · Paderborn, DE
• Peter Hubert · Lippstadt, DE
• Franz Krahling · Lippstadt, DE
• Wolfgang Peitz · Warstein, DE
• Karlernst Sewing · Lippstadt, DE
• Diethard Schnelle · Erwitte, DE

Key dates

• Filing date: May 12, 1986
• Grant date: Jan 10, 1989
• Expiry date: May 12, 2006

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F21W2103/10
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A dimmed motor vehicle headlight is provided with an ellipsoidally shaped reflector, where a light source is disposed at a first focal point of the reflector. A collector lens is supported by a frame having an annular part which is connected to the reflector and where the lens is disposed behind a second focal point of the reflector. A diaphragm is provided which is in the path of the light beam ahead of the collector lens and disposed at the respective focal point of the collector lens. The diaphragm is provided adjustable and with an upper substantially horizontally running edge that generates a light-dark boundary. The diaphragm and the frame are formed as a single part. The frame is provided by a beaker shaped sheet metal piece, where a cut out floor area serves to support the lens and where arm shaped webs are cut free from a wall forming a jacket face. One of these webs is angled toward the optical axis such that its upper end edge forms the diaphragm edge for the light-dark boundary. The remaining webs of the frame provide the support arms for the frame.