Combined head-up multisensor display
阅读：407发布：2023-02-16
专利汇可以提供Combined head-up multisensor display专利检索，专利查询，专利分析的服务。并且An aircraft cockpit display system which uses a single cathode ray tube or other image generating device to provide both a headup display, in which a collimated pattern is superimposed on the pilot''s field of view through the wind shield, and a multisensor display in which a radar picture or the like is viewed by looking down from the wind shield. The system includes a tube with a face positioned a small distance below the wind shield, a lower semireflecting mirror, a collimating lens above the lower mirror, and a combining mirror directly behind the wind shield. The aviator can look through the combining mirror and wind shield to see the collimated tube image superimposed on his field of view through the wind shield, or can look downwardly through the lower mirror to directly view the face of the tube.，下面是Combined head-up multisensor display专利的具体信息内容。
1. A display system for an aircraft that has a wind shield area where an aviator can see the environment and a panel area below the wind shield area, comprising: a display device having a face on which images are formed; first means for displaying the image on the face of the display device at a head down viewing region which is located at the panel area, so the aviator can view the image by looking thereat; second means for displaying at the wind shield area in a head up viewing region a collimated image of the image on the face of the display device, sAid second means displaying said image superimposed with the view of the environment that could be seen through said wind shield area if it were unobstructed; signal generating means operable in a first mode to generate signals that create a display within first boundaries that surround a large portion of the area of the face of the display device, and operable in a second mode to generate signals that create a display within second boundaries that surround an area smaller than the area surrounded by said first boundaries; and switch means for selectively operating said signal generating means in the first or second mode.
2. The display device described in claim 1 including: field flattening lens means positioned in front of the face of said display device for increasing the precision of the display in the windshield area from within said second boundaries, said lens means having a substantially constant focal length in a first region which covers the area of the display device within said second boundaries for displaying in the head up viewing region, and said lens means having a larger focal length at a position outside said first region for displaying in said head down viewing region.
3. The display device described in claim 1 wherein: said second means includes a semi-reflecting mirror positioned in front of the face of the display device for reflecting some of the light from the face in an upward direction and transmitting some of the light from the face of the display device for direct viewing by the aviator; and a shutter disposed above said semi-reflecting mirror to prevent downwardly travelling light rays from reaching the tube face when it is being directly viewed.
4. The display system described in claim 1 wherein: said display device generates a display which has a maximum intensity of light of a first predetermined wavelength; said first means includes a dichroic semireflecting mirror which reflects a high percentage but transmits a low percentage of light of said first predetermined wavelength, but which transmits a greater percentage of light of a second wavelength; and including a backup reticle assembly positioned so that light therefrom can pass through the dichroic mirror to said second means which displays a collimated image, said reticle assembly illuminated with light that has a higher intensity at said second wavelength than at said first wavelength so that a high proportion of reticle light can pass through the mirror.
5. A display system for an aircraft comprising: a display device having a face on which images are formed; first mirror means in front of said face, said first mirror means for reflecting light from the face of the display device and for transmitting light; second semi-reflecting mirror means positioned above the first mirror means mounted in the field of view of an aviator in the aircraft for displaying an external scene of view and the images from said display device; and collimating means positioned between said first and second mirror means for collimating light from the face of the display device so that the collimated image on the face of the display device is reflected from the second mirror means toward the aviator; the face of said display device positioned to be viewable through said first mirror means, so that the aviator can see the uncollimated image on the face of the display device by looking downwardly from the position of the second mirror means.
6. The display system described in claim 5 including: a shutter between said first and second mirror means; and wherein said display device is oriented with its face in a primarily vertical plane, so that it occupies a minimum of panel area; and said first mirror means reflects light from the face in an upward direction, said first mirror means being selected to reflect most of the light incident thereon and transmit less than half of said light and to have filter characteristIcs to minimize the entrance of ambient light onto the face of the tube that would reduce the contrast.
7. The display system described in claim 5 wherein: the face of said display device is oriented in a primarily vertical plane for direct viewing through the first mirror, and said first mirror is semi-reflecting; and including a backup reticle positioned below the first mirror means and spaced from the collimating means by a distance equal to the spacing along the optical path of the face of the display device from the collimating means.
8. The display system described in claim 5 wherein: the face of said display device is positioned in a primarily vertical plane for direct viewing through the first mirror means, and said display device generates a display which has a maximum intensity of light of a first predetermined wavelength; said first mirror is selected to be a dichroic mirror which transmits a low percentage of light of said first predetermined wavelength, but which transmits a greater percentage of light of a second wavelength; and including a backup reticle assembly positioned below the first mirror so that some light from the backup reticle can pass through the first mirror into the collimating lens means, said reticle assembly including illuminating means to provide light that has a higher intensity at said second wavelength than at said first wavelength so that a high proportion of reticle light can pass through the first mirror.
9. The display device described in claim 5 including: a shutter disposed between said first and second mirror means; signal generating means coupled to said display device for controlling said display device to operate in a first mode to create a display within first boundaries that surround a large portion of the area of the display device face, and to operate in a second mode to create a display within second boundaries that surround an area smaller than the area surrounded by said first boundaries; and switch means for selectively operating said signal generating means in said first or second modes and respectively closing or opening the shutter.
10. The display device described in claim 9 including: field flattening lens means positioned in front of the face of said display device for providing a substantially constant focal length in a first region which covers the area of the display device face within said second boundaries, and for providing a progressively larger focal length at locations progressively further outside said first region.
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