Helmet mounted display projector
First Claim
1. An improved apparatus for visual simulation utilizing a domed retroreflective screen, a dual channel computer image generator, with one channel dedicated to a high resolution area of interest and a second channel dedicated to a lower resolution instantaneous field of view, a laser modulation and line scanning system for outputting a plurality of laser line scans in accordance with said computer image generator channels, a plurality of flexible coherent fiber optic bundles for transmitting said line scans, a projector housing operably connected to said fiber optic bundle, and a helmet to be worn on an observer'"'"'s head adapted for mounting said housing thereon, wherein said improvement comprises:
- an optical system mounted within said projector housing comprising,means for generating frame scan for each projected laser line scan, connected to receive transmission from said laser modulation and line scanning system via said fiber bundles, said generating means including means for combining said laser line scans in a single projected frame such that a projected image is formed having a high resolution area of interest bounded by a lower resolution instantaneous field of view;
means for controlling said scan generating means operably connected to receive control signals from said computer image generator; and
means for projecting said laser raster through a wide angle onto said domed screen operably positioned to receive said raster from said scan generating means.
2 Assignments
0 Petitions
Accused Products
Abstract
A helmet mounted projector provides offset and frame scanning capabilitiesor a dual channel computer generated image simulation system. The projector receives full color lasers from each channel via a separate optical path, including galvanometer controlled line scan offset mirrors designed to provide eye tracking capabilities, and combines said channels along a single optical axis to provide coordinated frame scanning from the complex image produced by the combined rasters.
85 Citations
8 Claims
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1. An improved apparatus for visual simulation utilizing a domed retroreflective screen, a dual channel computer image generator, with one channel dedicated to a high resolution area of interest and a second channel dedicated to a lower resolution instantaneous field of view, a laser modulation and line scanning system for outputting a plurality of laser line scans in accordance with said computer image generator channels, a plurality of flexible coherent fiber optic bundles for transmitting said line scans, a projector housing operably connected to said fiber optic bundle, and a helmet to be worn on an observer'"'"'s head adapted for mounting said housing thereon, wherein said improvement comprises:
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an optical system mounted within said projector housing comprising, means for generating frame scan for each projected laser line scan, connected to receive transmission from said laser modulation and line scanning system via said fiber bundles, said generating means including means for combining said laser line scans in a single projected frame such that a projected image is formed having a high resolution area of interest bounded by a lower resolution instantaneous field of view; means for controlling said scan generating means operably connected to receive control signals from said computer image generator; and means for projecting said laser raster through a wide angle onto said domed screen operably positioned to receive said raster from said scan generating means. - View Dependent Claims (2, 3, 4)
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5. An improved apparatus for visual simulation utilizing a domed retroreflective screen, a dual channel computer image generator, with one channel dedicated to a high resolution area of interest and a second channel dedicated to a lower resolution instantaneous field of view, a laser modulation and line scanning system for outputting a plurality of laser line scans in accordance with said computer image generator channels, a plurality of flexible coherent fiber optic bundles for transmitting said line scans, a projector housing operably connected to said fiber optic bundle, and a helmet to be worn on an observer'"'"'s head adapted for mounting said housing thereon, wherein said improvement comprises:
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an optical system mounted within said projector housing comprising, means for generating frame scan for each projected laser line scan, connected to receive transmission from said laser modulation and line scanning system via said fiber optic bundles; means for controlling said scan generating means operably connected to receive control signals from said computer image generator; means for projecting said laser raster through a wide angle onto said domed screen operably positioned to receive said raster from said scan generating means; means for offsetting said line scan along its own length, operably connected to receive said line scan from said fiber optic bundle and receiving control signals from said computer image generator; relay lenses for transmitting said line scan from said fiber optic bundle to said scan generating means, operably positioned to receive said line scan and focus it on said offset means; said offsetting means comprising, a line offset galvanometer having an extended shaft, receiving control inputs from said computer image generators; an instantaneous field of view offset mirror mounted on said shaft and positioned to deflect a laser line scan along its own length; and an ara of interest offset mirror mounted on said shaft and positioned to deflect a laser line scan along its own length in the same manner as said instantaneous field of view offset mirror. - View Dependent Claims (6, 7, 8)
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Specification