Patent ID: 11964560
Assignee: ENVISICS LTD
Field: Optics (Instruments)
Classification: CPC B  G | IPC B  G

Claim 14:
15. A method for displaying a picture using a head up display of a vehicle comprising a windscreen, the method comprising,
in a first optical sub-system disposed proximate an upper region of the windscreen, emitting light from a light source; and
receiving the light at a spatial light modulator and spatially-modulating the light in accordance with a computer-generated hologram displayed on the spatial light modulator;

receiving a spatially-modulated light field from the first optical sub-system at a second optical sub-system disposed underneath the dashboard of the vehicle proximate a lower region of the windscreen; and
in the second optical sub-system, projecting the spatially-modulated light field onto the windscreen of the vehicle to form a virtual image on the windscreen.