Back to results
US 4,542,448 AGranted
Lamp assembly
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYoshihiro Yamai, Hideo Hamamoto, Masami Nishibe
Life of this patent
Estimating the term…
Abstract
Lamp assembly consisting of a housing with an opening containing a bulb, a frenel lens, a condenser lens and an outer lens installed in the housing nearest to the opening which allow the beams from the condenser lens to pass through plurality of portions pervious to light corresponding to the condenser lens respectively of which surfaces have the different tilt angles with each other, through which the refracted beams are radiated in such a manner that their refracted directions have in turn a gradual tendency of tilting.
Claims1
A lamp assembly comprising:
- a housing having an opening;
- a bulb for emitting light mounted within said housing;
- optical element means positioned within the opening of said housing for converting the light from said bulb into parallel rays;
- a condenser lens aligned adjacent said optical element means and including complementary pairs of concave and convex elements on opposing sides of said lens for converting said parallel rays passing through said optical element means into beams of light;
- an outer lens adjacent said condenser lens and receiving said light beams, said outer lens including an inside surface having a plurality of angularly displaced surfaces arranged consecutively, each of said angularly displaced surfaces being tilted at an angle more than 90 degrees from the horizontal, the tilt of said angularly displaced surfaces gradually increasing in inclination upwardly along the plane of said outer lens;
- and
- shaded means on the outer surface of said outer lens for restricting the radiation of light emitted from said housing.
4 more elements
Dependencies are inferred from the claim text.