Headlamps

• US 4,868,726 A
• Filed: 02/28/1989
• Issued: 09/19/1989
• Est. Priority Date: 07/21/1986
• Status: Expired due to Term

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Segoshi, Toru
• Primary Examiner(s): Schwadron, Martin P.
• Assistant Examiner(s): Flanigan, Allen J.
• Application Number:
  US07/317,076
• Time in Patent Office: 203 Days
• Field of Search: 362/61, 362/268, 362/307, 362/308, 362/311, 362/351, 362/355, 362/328, 362/343
• US Class Current: 362/308
• CPC Class Codes: F21S 41/43 characterised by the shape thereof
• CPC Class Codes: F21W 2102/16 having blurred cut-off lines

Abstract

A blind is disposed ahead of a reflector to intercept light of a low-beam bulb to prevent dazzle or glare to oncoming traffic. At least a portion of the blind is made of a translucent material having a low translucency such as translucent ceramics, ground glass, or the like. The blind may be partially coated with a black paint so as to have a translucent portion extending along an upper edge and an opaque portion coated with the paint.

Claims

1. A headlamp for an automotive vehicle comprising:

an optical axis;

an ellipsoidal reflector disposed so as to have first and second focal points on said optical axis said second focal point being located further away from said reflector than said first focal point;

a low-beam light source at said first focal points;

a lens having a focal point coinciding with said second focal point; and

a blind located between said light source and said second focal point at position closer to said second focal point;

said blind comprising an uncoated plate of uniform thickness made of a translucent material of uniform optical translucence to increase light distribution so as to improve long-range lighting and visibility.