Vehicle headlight

• US 6,224,245 B1
• Filed: 05/01/1999
• Issued: 05/01/2001
• Est. Priority Date: 10/15/1997
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Boebel, Doris
• Primary Examiner(s): HUSAR, STEPHEN F
• Application Number:
  US09/297,456
• Time in Patent Office: 731 Days
• Field of Search: 362/509, 362/516, 362/518, 362/539, 362/305, 362/346, 362/343
• US Class Current: 362/509
• CPC Class Codes: F21S 41/323 the reflector having two perpendicular cross sections having regular geometrical curves of a distinct nature
• CPC Class Codes: F21S 41/335 with continuity at the junction between adjacent areas
• CPC Class Codes: F21S 41/43 characterised by the shape thereof

Abstract

The headlight has a light source (12), a reflector (10), and a baffle (32) with a light admission opening (34), the baffle being disposed downstream of the reflector (10) in the light exit direction (30). The reflector (10) has a central reflector region (16), by which an at least approximately parallel fractional beam (20) is reflected, and at least one peripheral reflector region (24), by which a fractional beam (28) that converges in horizontal longitudinal planes (22) and is at least approximately parallel in vertical longitudinal planes (18) is reflected. The fractional beams (20, 28) are concentrated at least substantially on the light admission opening (34) of the baffle (32), whose cross section is smaller than the cross section of the reflector (10) at the front edge (36) of the reflector. The beam emerging from the headlight has pronounced horizontal scattering, despite the small cross section of the light admission opening (34) of the baffle (32).

Claims

1. A headlight for vehicles, having a light source (12) and a reflector (10), which is embodied at least regionally in such a way that through it, light emitted by the light source (12) is reflected as a beam (20, 28) of light that converges in horizontal longitudinal planes (22) and is at least approximately parallel in vertical longitudinal planes (18), in the light exit direction (30) downstream of the reflector (10), an opaque baffle (32) is disposed, which has a light admission opening (34) whose cross section is smaller than the cross section of the reflector (10) on the front edge (36) thereof pointing in the light admission opening (30), and that the beam (20, 28) reflected by the reflector (10) is concentrated at least substantially on the light admission opening (34) of the baffle (32) and the light admission opening (34) of the baffle (32) is embodied as at least approximately circular or oval in cross section.

2. The headlight of claim 1, wherein the reflector (10) is embodied in such a way that by means of at least one central reflector region (16), light emitted by the light source (12) is reflected as a fractional beam (20) that is at least approximately parallel in the horizontal longitudinal planes (22), and that by means of at least one peripheral reflector region (24), light emitted by the light source (12) is reflected as a fractional beam (28) converging in horizontal longitudinal planes (22).

3. The headlight of claim 2, wherein the at least one peripheral reflector region (24) is embodied in such a way that by it, light emitted by the light source (12) is reflected as a fractional beam (28) which converges increasingly more markedly in horizontal longitudinal planes (22) as the distance from the optical axis (11) increases.

4. The headlight of claim 1 wherein the beam (20, 28) reflected by the reflector (10) has an upper light/dark boundary that has an at least approximately horizontal course.