Patent ID: 7775698

Claim:
A projector headlight, comprising: a light source; at least one ellipsoidal reflector having a first focus and a second focus, and the first focus located substantially at the light source; a projector lens having both a focus and an optical axis located substantially on an imaginary line connecting the first focus and the second focus of the at least one ellipsoidal reflector, and the focus of the projector lens being located substantially at the second focus of the at least one ellipsoidal reflector; and a shade having both a top edge line including a neutral point and a top surface including the top edge line, the neutral point being located substantially at the focus of the projector lens and configured to form a horizontal cut-off line for both a driving lane and an oncoming lane with light emitted from the light source, the top surface slanting down in a direction towards the projector lens, and wherein with respect to the optical axis a slant angle of the top surface including the top edge line forming the horizontal cut-off line for the driving lane is larger than a slant angle of the top surface including the top edge line forming the horizontal cut-off line for the oncoming lane.