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US 7,008,092 B2Granted
Vehicular headlamp with lens holder having upper opening portion
AssigneeKoito Manufacturing Co., Ltd.
InventorsHideki Tanaka, Kaoru Yamamoto, Hisaya Kano
Life of this patent
Estimating the term…
Abstract
An apparatus includes a light chamber defined by a lamp body and a front cover. The apparatus houses a projection-type light source unit which integrates a reflector, a light source disposed in the vicinity of a first focal point of the reflector, a convex lens disposed in front of the reflector, and an extension reflector. The convex lens is disposed such that light external from the lamp chamber enters the lamp chamber and is reflected out through the convex lens.
Claims5
A vehicular headlamp comprising:
- a lamp chamber defined by a lamp body and a transparent front cover;
- a light source unit housed in the lamp chamber;
- a reflector integrated with the light source unit, said reflector having a substantially ellipsoidal reflecting surface;
- a light source provided in the light source unit and disposed in the vicinity of a focal point of the reflector;
- a cylindrical lens holder attached to an opened end of the reflector, said cylindrical lens holder having an additional opening at its upper side;
- a convex lens disposed in front of the reflector through the cylindrical lens holder wherein light external from the lamp chamber can enter through the additional opening and be reflected out through the convex lens;
- and
- a glare light protection shade for preventing glare light emitted by the light source from passing through the additional opening of the cylindrical lens holder, and for reflecting out through the convex lens, light that is external from the lamp chamber and that enters through the additional opening, said glare light protection shade being provided between the light source and the additional opening.
5 more elements
A vehicular headlamp comprising:
- a lamp chamber defined by a lamp body and a transparent front cover;
- a light source unit housed in the lamp chamber;
- a first reflector integrated with the light source unit, said reflector having a substantially ellipsoidal reflecting surface;
- a first light source provided in the light source unit and disposed in the vicinity of a focal point of the first reflector;
- a cylindrical lens holder attached to an opened end of the first reflector, said cylindrical lens holder having an additional opening at its upper side;
- a convex lens disposed in front of the first reflector through the cylindrical lens holder;
- and
- a second reflector disposed above the light source unit and having a second light source at its center, and said second reflector disposed at a rear part of the upper opening of the cylindrical lens holder.
5 more elements
Dependencies are inferred from the claim text.