Optical unit and vehicle lamp
AssigneeKoito Manufacturing Co., Ltd.
InventorsHidetada Tanaka, Misako Nakazawa, Satoshi Yamamura
Life of this patent
Estimating the term…
Abstract
An optical unit includes a light source, a rotary reflector that rotates about an axis of rotation and includes a reflective surface that reflects light emitted by the light source, and a projection lens including an incident surface on which reflected light from the rotary reflector is incident. A shade is provided between the projection lens and the rotary reflector. The shade blocks at least a portion of light that has been incident on an emission surface of the projection lens at an angle within a predetermined range, that has been condensed by the projection lens, and that travels toward the reflective surface of the rotary reflector.
Claims3
An optical unit, comprising:
- a light source;
- a rotary reflector that rotates about an axis of rotation and includes a reflective surface that reflects light emitted by the light source;
- a projection lens having an incident surface on which reflected light from the rotary reflector is incident;
- and
- a shade provided between the projection lens and the rotary reflector, the shade blocking at least a portion of light that has been incident on an emission surface of the projection lens at an angle within a predetermined range, that has been condensed by the projection lens, and that travels toward the reflective surface of the rotary reflector and wherein the shade is configured such that the shade simultaneously does not block reflected light from the rotary reflector.
Dependencies are inferred from the claim text.