Claims
- 1. An improved apparatus for displaying real-time, ultra-high resolution projected images on a distant screen in accordance with video image signal rates comprising:
- a laser providing a beam of coherent light;
- means located to receive the beam of coherent light for modulating it at video image signal rates;
- means disposed to receive the video rate modulated coherent light beam from the modulating means for reciprocally imparting a scan thereof in an X-direction;
- means disposed to receive the X-direction reciprically scanned modulated coherent light beam for reciprocally imparting a scan thereof in a Y-direction;
- means coupled to the modulating means, the X-direction scan reciprocally imparting means and the Y-direction scan reciprocally imparting means for acousto electronically controlling the modulation, the X-direction scan and the Y-direction scan, respectfully;
- means aligned to receive the X- and Y-direction reciprocally scanned modulated coherent light beam for selectively changing the polarization orientation of linearly polarized light incident thereon in direct response to the voltage pattern directly produced therein by X- and Y-direction reciprocally scanned modulated coherent light beam;
- means disposed for projecting a high intensity light beam in a light path to the light polarization orientation changing means; and
- means interposed in the light path between the light polarization orientation changing means and the high intensity light beam projecting means for reflecting linearly polarized high intensity light onto the light polarization orientation changing means and for directing modulated reflected high intensity light modulated in accordance with the X- and Y-direction reciprocally scanned modulated coherent light beam onto the distant screen in the form of the real-time, high-resolution images at video image signal rates.
- 2. An apparatus according to claim 1 in which the light polarization orientation changing means is a liquid crystal light valve and the modulated coherent beam is a writing beam that scans a photosensitive layer of the liquid crystal light valve and the reflected linearly polarized high intensity light is reflected through a liquid crystal layer that effects a modulation of the linearly polarized high linearity projection beam.
- 3. An apparatus according to claim 2 in which the modulating means is an acousto-optic diffraction modulator modulating the light intensity of the first diffraction order with the video image signals.
- 4. An apparatus according to claim 3 in which the X-direction scan reciprocally imparting means and the Y-direction scan reciprocally imparting means are two acousto-optic diffraction deflectors affecting the X- and Y-scans in accordance with line scan signals of the video image signals.
- 5. An apparatus according to claim 2 in which the X-direction scan reciprocally imparting means the Y-direction scan reciprocally imparting means are two acousto-optic diffraction deflectors affecting the X- and Y-scans in accordance with line scan signals of the video image signals.
- 6. An apparatus according to claim 4 in which the X and Y scan acousto-optic diffraction deflectors are TeO.sub.2, tellurium dioxide.
- 7. An apparatus according to claim 6 in which the modulating acousto-optic diffraction modulator is TeO.sub.2, tellurium dioxide.
- 8. An apparatus according to claim 7 in which the modulated reflected high intensity reflecting and directing means is a polarizing beam splitter.
- 9. An apparatus according to claim 8 in which the acousto-electronically controlling means is fabricated to assure scanning the modulated coherent light beam at video scan rates using two acousto-optic beam deflectors to provide a raster scanned image onto a liquid crystal light valve.
- 10. An apparatus according to claim 2 in which the acousto-electronically controlling means is fabricated to assure scanning the modulated coherent light beam at video scan rates using two acousto-optic beam deflectors to provide a raster scanned image onto a liquid crystal light valve.
- 11. An improved apparatus for displaying real-time, ultra-high resolution projected images on a distant screen in accordance with video image signal rates comprising:
- a laser providing a beam of coherent light;
- means located to receive the beam of coherent light for modulating it at video image signal rates;
- means disposed to receive the video rate modulated coherent light beam from the modulating means for reciprocally imparting a scan thereof in an X-direction;
- a galvanometer driven mirror disposed to receive the X-direction reciprically scanned modulated coherent light beam for reciprocally imparting a scan thereof in a Y-direction;
- means coupled to the modulating means, the X-direction scan reciprically imparting means and the Y-direction scan reciprocally imparting galvanometer driven mirror for acousto electronically controlling the modulation and the X-direction scan and for electromechanically imparting the Y-direction scan, respectfully;
- means aligned to receive the X- and Y-direction reciprocally scanned modulated coherent light beam for selectively changing the polarization orientation of linearly polarized light incident thereon in direct response to the voltage pattern directly produced therein by X- and Y-direction reciprocally scanned modulated coherent light beam;
- means disposed for projecting a high intensity light beam in a light path to the light polarization orientation changing means; and
- means interposed in the light path between the light polarization orientation changing means and the high intensity light beam projecting means for reflecting linearly polarized high intensity light onto the light polarization orientation changing means and for directing modulated reflected high intensity light modulated in accordance with the X- and Y-direction reciprocally scanned modulated coherent light beam onto the distant screen in the form of the real-time, high-resolution images at video image signal rates.
STATEMENT OF GOVERNMENT INTEREST
The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.
US Referenced Citations (9)