System and method for stimulating night vision goggles
First Claim
1. A display system for stimulating night vision goggles comprising:
- image generation means for generating video signals comprising visible background video and NVG video signals;
background image projection means operatively connected to the image generation means for receiving the visible background video signals produced by the image generation means for projecting background images;
NVG image projection means operatively connected to the image generation means for receiving the NVG video signals produced by the image generation means for projecting NVG imagery, said NVG imagery capable of stimulating the night vision goggles and comprising near infrared raster imagery and calligraphic imagery; and
image processing means for controlling the NVG image projection means such that the NVG image projection means time-multiplexes the projection of the near infrared raster imagery and the calligraphic imagery.
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Abstract
A visual display system and method for full and realistic stimulation of night vision goggles according to the present invention includes a display system for stimulating night vision goggles across a large dynamic range. The display system includes a high resolution head tracked area of interest display for a rear projection video display. The system time multiplexes the display of raster and calligraphic images in the area of interest. The system also includes a method of calligraphic light point projection that conserves power by using a head tracked slow speed high sensitivity electromagnetic deflection system to position an electron beam which is modulated in X-Y position in a calligraphic fashion by a high speed secondary yoke to create intense light point images for the area of interest display.
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Citations
33 Claims
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1. A display system for stimulating night vision goggles comprising:
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image generation means for generating video signals comprising visible background video and NVG video signals;
background image projection means operatively connected to the image generation means for receiving the visible background video signals produced by the image generation means for projecting background images;
NVG image projection means operatively connected to the image generation means for receiving the NVG video signals produced by the image generation means for projecting NVG imagery, said NVG imagery capable of stimulating the night vision goggles and comprising near infrared raster imagery and calligraphic imagery; and
image processing means for controlling the NVG image projection means such that the NVG image projection means time-multiplexes the projection of the near infrared raster imagery and the calligraphic imagery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A flight simulation training system for training operators in the use of night vision goggles comprising:
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image generation means for generating video signals comprising visible background video and NVG video signals;
background image projection means operatively connected to the image generation means for receiving the visible background video signals produced by the image generation means for projecting background images;
NVG image projection means operatively connected to the image generation means for receiving the NVG video signals produced by the image generation means for projecting NVG imagery, said NVG imagery capable of stimulating the night vision goggles and comprising near infrared raster imagery and calligraphic imagery;
means for controlling the NVG image projection means such that the NVG image projection means time-multiplexes the projection of the near infrared raster imagery and the calligraphic imagery;
means for polarizing and selectively rotating the NVG imagery synchronously with the time-multiplexed projection of the near infrared raster imagery and the calligraphic imagery such that the near infrared raster imagery is projected as the polarized NVG imagery is rotated and the calligraphic imagery is projected as the polarized NVG imager is not rotated; and
a polarization rotater mounted at the NVG image projection means and a polarization analyzer attached to the night vision goggles, said polarization analyzer comprising a polarizing filter having a small aperture, wherein only the portion of the rotated, polarized near infrared raster imagery in alignment with the aperture will pass through the aperture to stimulate the night vision goggles as the infrared raster imagery is projected. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A method of displaying images to stimulate night vision goggles comprising the steps of:
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generating video signals comprising visible background video and NVG video signals;
projecting background images responsive to the generated visible background video signals;
projecting NVG images responsive to the generated NVG video signals, wherein said NVG images are capable of stimulating the night vision goggles and comprise time-multiplexed near infrared raster imagery and calligraphic imagery; and
polarizing and selectively rotating the NVG images synchronously with the time-multiplexed projected near infrared raster images and the calligraphic imagery such that the near infrared raster images are projected as the polarized NVG images are rotated and the calligraphic images are projected as the polarized NVG images are not rotated, wherein said night vision goggles comprise a polarization rotater and a polarization analyzer, said analyzer comprising a polarizing filter having a small aperture, wherein only the portion of the rotated, polarized near infrared raster imagery in alignment with the aperture will pass through the aperture to stimulate the night vision goggles as the infrared raster imagery is projected. - View Dependent Claims (23, 24, 25, 28)
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26. A display system for stimulating night vision goggles comprising:
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an image generator adapted to generate video signals comprising visible background video and NVG video signals;
a background image projector operatively connected to the image generator and adapted to receive the visible background video signals produced by the image generator to project background images;
an NVG image projector operatively connected to the image generator adapted to receive the NVG video signals produced by the image generator to project NVG imagery, said NVG imagery capable of stimulating the night vision goggles and comprising near infrared raster imagery and calligraphic imagery; and
an image processor adapted to control the NVG image projector such that the NVG image projector time-multiplexes the projection of the near infrared raster imagery and the calligraphic imagery. - View Dependent Claims (27, 29, 30, 31, 32, 33)
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Specification