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US 7,073,931 B2Granted
Vehicular headlamp and optical unit
AssigneeKoito Manufacturing Co., Ltd.
InventorHiroyuki Ishida
Life of this patent
Estimating the term…
Abstract
A vehicular headlamp used in au automobile, includes: a light source for generating light; a light transmitting member formed from material transmitting the light; a reflector, formed on at least a part of a surface of the light transmitting member, for reflecting the light incident via the light transmitting member from the light source, the reflector having an optical center near the light source; and a lens formed integrally with the light transmitting member for deflecting the light reflected by the reflector to direct the light to the outside of the vehicular headlamp.
Claims13
A vehicular headlamp used in an automobile, comprising:
- a light source operable to generate light;
- a light transmitting member formed from material transmitting said light;
- a reflector, formed on at least a part of a surface of said light transmitting member, operable to reflect said light incident via said light transmitting member from said light source, said reflector having an optical center near said light source;
- and
- a lens, formed integrally with said light transmitting member, operable to deflect said light reflected by said reflector to direct said light to an outside of said vehicular headlamp, wherein
- said vehicular headlamp emits light ahead of the automobile,
- said light transmitting member transmits said light reflected by said reflector ahead,
- a light blocking member formed from material transmitting no light generated by said light source integrally with said light transmitting member is further provided for blocking a part of said light transmitted ahead by said light transmitting member at an edge,
- said reflector reflects said light generated by said light source toward a position near said edge of said light blocking member, and
- said lens irradiates light that forms at least a part of a cut line for defining a boundary between a bright region and a dark region in a light distribution pattern of said vehicular headlamp based on a shape of at least a part of said edge of said light blocking member.
7 more elements
A vehicular headlamp for emitting light ahead, comprising:
- a light source operable to generate light;
- a light transmitting member, formed from material transmitting said light, operable to transmit said light generated by said light source ahead;
- a light blocking member, formed from material transmitting no light generated by said light source integrally with said light transmitting member, operable to block a part of said light transmitted ahead by said light transmitting member at an edge;
- and
- a lens, formed integrally with said light transmitting member, operable to irradiate light forming at least a part of a cut line that defines a boundary between a bright region and a dark region in a light distribution pattern of said vehicular headlamp based on a shape of at least a part of said edge of said light blocking member.
2 more elements
An optical unit for irradiating light generated by a light source, comprising:
- a light transmitting member formed from material transmitting said light;
- a reflector, formed on at least a part of a surface of said light transmitting member, operable to reflect said light incident via said light transmitting member from said light source, said reflector having an optical center near said light source;
- and
- a lens, formed integrally with said light transmitting member, operable to deflect said light reflected by said reflector to direct said light to an outside of said optical unit, wherein
- said light transmitting member transmits said light reflected by said reflector,
- a light blocking member formed from material transmitting no light generated by said light source integrally with said light transmitting member is further provided for blocking a part of said light transmitted ahead by said light transmitting member at an edge,
- said reflector reflects said light generated by said light source toward a position near said edge of said light blocking member, and
- said lens irradiates light that forms at least a part of a cut line for defining a boundary between a bright region and a dark region in a light distribution pattern of said optical unit based on a shape of at least a part of said edge of said light blocking member.
5 more elements
An optical unit for irradiating light generated by a light source, comprising:
- a light transmitting member, formed from material transmitting said light, operable to transmit said light generated by said light source ahead;
- a light blocking member, formed from material transmitting no light generated by said light source integrally with said light transmitting member, operable to block a part of said light transmitted ahead by said light transmitting member at an edge;
- and
- a lens, formed integrally with said light transmitting member, operable to irradiate light forming a cut line in a light distribution pattern of a vehicular headlamp based on a shape of at least a part of said edge of said light blocking member.
1 more element
A vehicular headlamp used in an automobile, comprising:
- a light source operable to generate light;
- a light transmitting member formed from material transmitting said light;
- a reflector, formed on at least a part of a surface of said light transmitting member, operable to reflect said light incident via said light transmitting member from said light source, said reflector having an optical center near said light source;
- and
- a lens, formed integrally with said light transmitting member, operable to deflect said light reflected by said reflector to direct said light to an outside of said vehicular headlamp, wherein
- said light source includes a semiconductor light emitting device, and said light transmitting member seals said semiconductor light emitting device.
3 more elements
Dependencies are inferred from the claim text.