Rear indicating device for an automobile

A rear indication device for an automobile comprising:

• a light source for creating a light beam;
• a hologram subjected to an illumination by the light beam for a rear indication;
• a light guide plate for guiding the light beam from the light source to the hologram, and;
• an irregular shaped prism arranged between the light source and an end of the light guide plate, the prism being arranged in face to face contact with the light guide plate in such a manner that the light beam from the light source is flattened substantially in the direction of the thickness of the light guide plate and that the flattened beam is transmitted inside along the light guide plate into the hologram at a desired angle of incidence to reproduce a light beam at the hologram, which is directed to the rear direction of the automobile.

A rear indication device for an automobile comprising:

• a light source for creating a light beam;
• a hologram subjected to an illumination by the light beam for a rear indication;
• a light guide plate for guiding the light beam from the light source to the hologram, and;
• a second hologram of a reflection type arranged in one end of the light guide plate for receiving the light beam from the light source, the second hologram reflecting the light beam from the light source so as to transmit the beam inside the light guide plate into the first hologram, while the light beam is flattened substantially in the direction of the thickness of the light guide plate and that the flattened beam is introduced into the first hologram at a desired angle of incidence to reproduce a light beam at the hologram, which is directed to the rear direction of the automobile.

A rear indicator device for an automobile comprising:

• a light source for creating a light beam;
• a light guide plate, and;
• a hologram arranged in said light guide plate having a first section receiving the light beam from the light source for reflecting the light beam in a particular angle allowing the reflected beam to be transmitted inside along the light guide beam while the light beam is flattened substantially in the direction of the thickness of the light guide plate;
• the hologram having a second section to which the beam from the first section is introduced at a particular angle of incidence to reproduce a light beam at the hologram, which is directed to the rear direction of the automobile.

A rear indication device for an automobile comprising:

• a light source for creating a light beam;
• a reflection type hologram subjected to an illumination by the light beam for a rear indication;
• a light guide plate for guiding the light beam from the light source to the hologram for introducing the light beam into the hologram at a desired angle of incidence to reproduce a light beam at the hologram, which is directed to the rear direction of the automobile;
• means for flattening the light beam transmitted in the light guide plate to the hologram substantially in the direction of the thickness of the guiding plate means, and;
• a reflecting plate provided at the edge of the light guide plate adjacent the hologram for reflecting, toward the rear direction of the automobile, the light beam passed through the hologram and emitted from the edge outwardly.

A rear indicator device for an automobile comprising:

• a light source for creating a light beam;
• a reflection type hologram subjected to an illumination by the light beam for a rear indication;
• a light guide plate for guiding the light beam from the light source to the hologram which introduces the light beam into the hologram at a desired angle of incidence to reproduce a light beam at the hologram, which is directed to the rear direction of the automobile;
• means for flattening the light beam transmitted in the light guide plate to the hologram substantially in the direction of the thickness of the guiding plate means, and;
• a reflecting plate provided to face the front surface of the light guide plate for reflecting, toward the rear direction of the automobile, the light passed through the hologram in the forward direction of the automobile.