Vehicle lamp
A vehicle lamp includes a light source, and a projection lens which is configured to project light emitted from the light source. The projection lens includes two or more resin lenses and one or more glass lenses, and a refractive power ratio R (=Pr/Pt) of a total refractive power Pr of the resin lenses to a refractive power Pt of the entire projection lens satisfies a relationship of R<⅓.
1. A vehicle lamp comprising:
a light source; and
a projection lens configured to project light emitted from the light source,
wherein the projection lens includes two or more resin lenses and one or more glass lenses, and a refractive power ratio R (=Pr/Pt) of a total refractive power Pr of the resin lenses to a refractive power Pt of the entire projection lens satisfies a relationship of R<⅓,
wherein the projection lens is a triplet lens including a first lens having a positive refractive power, a second lens having a negative refractive power, and a third lens having a positive refractive power, in an order from a side opposite to the light source, the first lens and second lens are formed of resin, and the third lens is formed of glass.
2. The vehicle lamp according to claim 1 ,
wherein the first lens and the second lens are formed of resin having substantially the same thermal expansion coefficient.
3. The vehicle lamp according to claim 1 ,
wherein light from the light source is projected and an ADB light distribution control is performed.
4. A vehicle lamp comprising:
a light source; and
a projection lens configured to project light emitted from the light source,
wherein the projection lens includes two or more resin lenses and one or more glass lenses, and a refractive power ratio R (=Pr/Pt) of a total refractive power Pr of the resin lenses to a refractive power Pt of the entire projection lens satisfies a relationship of R<⅓, and
wherein the projection lens includes a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, and a fourth lens having a positive refractive power in an order from a side opposite to the light source, the first lens and the second lens are formed of resin, and the third lens and the fourth lens are formed of glass.
5. The vehicle lamp according to claim 4 , wherein the first lens and the second lens are formed of resin having substantially the same thermal expansion coefficient.
6. The vehicle lamp according to claim 4 , wherein light from the light source is projected and an ADB light distribution control is performed.