US Patent 11441750 Lighting tool for vehicle

A projection lens has a first lens body including a first incidence section disposed at a side facing a first light source and a first emitting section disposed at a side opposite to the first incidence section, and a second lens body including a second incidence section disposed at a side facing a second light source and a second emitting section disposed at a side opposite to the second incidence section, a structure in which the first lens body and the second lens body abut against each other via an intermediate layer which is interposed between facing boundary surfaces of the first lens body and the second lens body is provided, and a refractive index of the intermediate layer is smaller than a refractive index of the first lens body.