Back to results
US 4,727,458 AGranted
Dimmed motor vehicle headlight
AssigneeWestfalische Metall Industrie KG Hueck & Co.
InventorsHeinz Droste, Wolfgang Peitz, Heinrich Schafer
Life of this patent
Estimating the term…
Abstract
The invention refers to a motor vehicle projection headlight, where the projection lens is in part covered by a light transmitting plate. The light transmitting plate has edge regions which are of a wider diameter than the lens. An annular light impermeable cover, which surrounds the lens immediately and at a small distance, is disposed at a distance to the edge region of the light permeable plate. The surface of the cover toward the light transmitting plate is of high reflectivity.
Claims29
A dimmed motor vehicle headlight comprising
- a lamp socket;
- a light reflector attached to the lamp socket;
- a light source supported by the lamps socket and disposed closely spaced to a focal point of the reflector;
- a diaphragm rigidly connected to the light reflector and disposed in front of the light source;
- a lens rigidly connected to the light reflector and disposed in front of the diaphragm such that an edge of the diaphragm is near a focal point of the lens;
- a light-impermeable ring-shaped cover fixedly disposed in front of the lens for surrounding the lens at a close distance and having an opening of about the diameter of the lens and wherein the outer edge of the ring-shaped cover is bent in the direction of the diaphragm so as to form a recess mounting area for the light-impermeable ring-shaped cover, and where a concave side of the cover is directed toward the light permeable protective plate;
- a light-transmitting protective plate fixedly disposed in front of the lens and light-impermeable ring-shaped cover and covering the lens and the light-impermeable ring-shaped cover, where the side of the light-impermeable ring-shaped cover toward the light transmitting protective plate is provided with a reflective surface.
4 more elements
A method for production of a dimmed motor vehicle headlight wherein the motor vehicle is provided with an opening for a parking light comprising forming a light reflector;
- disposing a light source closely spaced to a focal point of the reflector;
- placing a diaphragm in front of the light source;
- disposing a lens in front of the diaphragm such that an edge of the diaphragm is near a focal point of the lens;
- forming a light-impermeable ring-shaped cover wherein the outer edge of the ring-shaped cover is bent in the direction of the diaphragm so as to form a recess mounting area for the light-impermeable ring-shaped cover, and where a concave side of the cover is directed toward the light permeable protective plate;
- disposing the light-impermeable ring-shaped cover in front of the lens for surrounding the lens at a close distance and having an opening of about the diameter of the lens;
- a light-transmitting protective plate disposed in front of the lens and light-impermeable ring-shaped cover and covering the lens and the light-impermeable ring-shaped cover, where the side of the light-impermeable ring-shaped cover toward the light transmitting protective plate is provided with a reflective surface.
3 more elements
A dimmed motor vehicle headlight comprising
- a lamp socket;
- a light reflector attached to the lamp socket;
- a light source supported by the lamps socket and disposed closely spaced to a focal point of the reflector;
- a diaphragm rigidly connected to the light reflector and disposed in front of the light source;
- a lens rigidly connected to the light reflector and disposed in front of the diaphragm such that an edge of the diaphragm is near a focal point of the lens;
- a light-impermeable ring-shaped cover fixedly disposed in front of the lens for surrounding the lens at a close distance and having an opening of about the diameter of the lens, wherein the light-impermeable ring-shaped cover includes an opening for receiving a lamp for a parking light, wherein the motor vehicle is provided with an opening for a parking light, wherein the reflection region of the light-impermeable ring-shaped cover is formed like a valley recess around the opening for the parking light, and wherein the valley recess forms a reflector matching the position of an coiled filament wire of the parking light;
- a light-transmitting protective plate fixedly disposed in front of the lens and light-impermeable ring-shaped cover and covering the lens and the light-impermeable ring-shaped cover, where the side of the light-impermeable ring-shaped cover toward the light transmitting protective plate is provided with a reflective surface.
4 more elements
Dependencies are inferred from the claim text.