VEHICLE LIGHTING UNIT

摘要

A vehicle lighting unit can prevent the erroneous emission of laser light from a lens member through its light emission surface to the outside even when a wavelength converting member is dislocated. The vehicle lighting unit can include a laser light source, the wavelength converting member configured to receive the laser light and wavelength-convert at least part of the laser light, and the lens member including a light incident surface on which light from the wavelength converting member or the laser light is incident, a first reflecting surface configured to totally reflect the light from the light incident surface, and a light exiting surface through which the light from the first reflecting surface can exit. The lens member can further include a total-reflection prevention structure at the first reflecting surface, configured to prevent the laser light entering the lens member from being totally reflected by the first reflecting surface.

主权项

1. A vehicle lighting unit comprising:
a laser light source configured to emit laser light; a wavelength converting member configured to receive the laser light emitted from the laser light source and wavelength-convert at least part of the laser light to light with different wavelengths; and a lens member configured to include
a light incident surface on which light from the wavelength converting member or the laser light is incident,a first reflecting surface configured to totally reflect the light from the light incident surface,a light exiting surface through which the light totally reflected by the first reflecting surface can exit, anda total-reflection prevention structure at the first reflecting surface, the total-reflection prevention structure configured to prevent the laser light entering the lens member from being totally reflected by the first reflecting surface.