Pulsed laser optical display device
AssigneeDale A. Wennagel
InventorsDale A. Wennagel, Michael D. Tulloch
Life of this patent
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Abstract
A pulsed laser optical display device includes a source of an image bit map. Activation signals are generated from the image bit map, and used to control the firing of laser diodes arrange in banks and oriented so that the resulting beams impinge upon a rotating polygonal mirror which reflects each beam to impinge on a projection surface, the rotating mirror serving to sweep the beams over the projection surface. Rotation of the mirror is synchronized with activation of the the diodes, so that an image corresponding to the bit map is displayed. Both front-projection and rear-projection surfaces, such as an automobile instrument panel and a heads-up display, can be illuminated simultaneously.
Claims25
A pulsed laser optical display device for displaying a projected image, the display device comprising:
- a source of an image bit map;
- means for generating a plurality of activation signals from the image bit map;
- at least one light source bank including a plurality of solid state laser diodes oriented in a common direction, each diode adapted to produce a light beam;
- a plurality of diode driver means, each diode driver means activating a respective laser diode in response to an activation signal;
- at least one projection surface;
- polygonal mirror reflection means for reflecting each beam to impinge on a projection surface;
- drive means for rotating the polygonal mirror reflection means to sweep the light beams over the projection surface;
- synchronization means for synchronizing the activation signal to each diode drive means with the rotation of the reflection means whereby a projected image is displayed on at least one projection surface that is perceived by an observer as a single, instantaneous image.
A pulsed laser optical display device for displaying a projected image, the display device comprising:
- a source of an image bit map;
- means for generating a plurality of activation signals from the image bit map;
- at least one light source bank including at least one first bank of diodes containing a plurality of solid state diodes oriented in a common direction, and at least one second bank of diodes containing a plurality of solid state diodes oriented in a common direction, each diode adapted to produce a light beam;
- at least one first projection surface and at least one second projection surface, the light beams generated by the at least one first diode bank being directed by the reflection means to the first projection surface, and the light beams generated by the at least one second bank of diodes being directed by the reflection means of the second projection surface;
- a plurality of diode driver means, each diode driver means activating a respective laser diode in response to an activation signal;
- polygonal mirror reflection means for reflecting each beam to impinge on a projection surface;
- drive means for rotating the polygonal mirror reflection means to sweep the light beams over the projection surface;
- and
- synchronization means for synchronizing the activation signal to each diode driver means with the rotation of the reflection means whereby a projected image is displayed on at least one projection surface that is perceived by an observer as a single, instantaneous image.
Dependencies are inferred from the claim text.