Automotive hologram image producing lamp
An automotive hologram image producing lamp is provided. The automotive hologram image producing lamp includes beam exposed to the exterior to be provided in the form of a hologram image. The automotive hologram image producing lamp includes a light source configured to emit light, a hologram forming unit configured to receive incidence of a first partial light among the emitted light to form a hologram and a light pattern forming unit configured to transmit a second partial light among the emitted light to form a information providing light pattern.
1. An automotive hologram image producing lamp, comprising:
a light source configured to emit light;
a light deforming unit configured to convert the emitted light into a beam that has a wavelength and a phase substantially similar to a wavelength and a phase of a reference beam used to record a hologram;
a hologram forming unit configured to receive incidence of the beam converted by the light deforming unit, wherein the beam is transmitted through the hologram forming unit, a partial beam among the transmitted beam reproduces the hologram, and a remaining beam among the transmitted beam subsequently proceeds to a light pattern forming unit,
wherein the light pattern forming unit is configured to receive the remaining beam from the hologram forming unit to form an information providing light pattern.
2. The automotive hologram image producing lamp of claim 1 , wherein the hologram forming unit includes a hologram storage medium on which hologram information is recorded, and selectively includes a reflector configured to reflect the partial beam and guide the partial beam to the hologram storage medium.
3. The automotive hologram image producing lamp of claim 2 , wherein the hologram storage medium records interference fringes generated by interference between the reference beam and an object beam as the hologram information.
4. The automotive hologram image producing lamp of claim 3 , wherein a wavelength and a phase of the emitted light are identical to the wavelength and the phase of the reference beam, respectively.
5. The automotive hologram image producing lamp of claim 1 , wherein the light pattern forming unit includes a light guide.
6. The automotive hologram image producing lamp of claim 1 , wherein the light source, the hologram forming unit and the light pattern forming unit are disposed within a tail lamp or a turn signal lamp of the vehicle.
7. The automotive hologram image producing lamp of claim 1 , wherein the light pattern forming unit displays at least one selected from the group consisting of a tail lamp, a brake lamp, a turn signal lamp, and a reversing lamp.