AIRCRAFT FLIGHT DATA DISPLAY INSTRUMENT
First Claim
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1. A display instrument for projecting aircraft flight data into the pilot'"'"''"'"'s normal line of sight, said instrument comprising:
- a transparent combining glass positioned in the said line of sight and having a surface for reflecting projected images into the said line of sight;
a housing fixed with respect to the aircraft;
an optical objective supported by said housing for projecting images of luminous objects focused at infinity onto the said surface;
a plurality of light emitting elements mounted in said housing and having respective areas for providing light by conversion of electrical power applied thereto, said elements being arranged to serve as said luminous objects and to represent flight data as a function of the positioning of the elements;
a supply circuit for supplying electrical power to said light emitting elements;
means for supporting said light emitting elements;
servo control means responsive to signals corresponding to flight data measurements for actuating said supporting means to position said areas of the light emitting elements within the focal zone of the optical objective; and
detector means connected to said servo control means for measuring flight data and developing said signals.
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Abstract
A display instrument for projecting aircraft flight data upon a transparent screen into the pilot'"'"''"'"'s normal line of sight, wherein an optical objective projects images of luminous objects focused at infinity onto a combining glass; the luminous objects which represent the flight data to be displayed being carried out by means of electro-optical transducers such as electroluminescent diodes supplied by an associated supply circuit; servo means responsive to output signals of airborne sensor devices controlling the displacement of, and the selective supply to, the diodes representative of variable flight data.
6 Citations
2 Claims
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1. A display instrument for projecting aircraft flight data into the pilot'"'"''"'"'s normal line of sight, said instrument comprising:
- a transparent combining glass positioned in the said line of sight and having a surface for reflecting projected images into the said line of sight;
a housing fixed with respect to the aircraft;
an optical objective supported by said housing for projecting images of luminous objects focused at infinity onto the said surface;
a plurality of light emitting elements mounted in said housing and having respective areas for providing light by conversion of electrical power applied thereto, said elements being arranged to serve as said luminous objects and to represent flight data as a function of the positioning of the elements;
a supply circuit for supplying electrical power to said light emitting elements;
means for supporting said light emitting elements;
servo control means responsive to signals corresponding to flight data measurements for actuating said supporting means to position said areas of the light emitting elements within the focal zone of the optical objective; and
detector means connected to said servo control means for measuring flight data and developing said signals.
- a transparent combining glass positioned in the said line of sight and having a surface for reflecting projected images into the said line of sight;
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2. A display instrument as set forth in claim 1, wherein said elements are electroluminescent diodes.
Specification
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Current AssigneeBernard Picardat
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Original AssigneeBernard Picardat
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InventorsPicardat, Bernard
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Primary Examiner(s)Claffy, Kathleen H.
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Assistant Examiner(s)Myers, Randall P.
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Application NumberUS05/354,126Time in Patent Office581 DaysField of Search340/25,27R,27AT,27NA 35/12B,12NUS Class Current340/980CPC Class CodesG02B 2027/0154 with movable elementsG02B 27/01 Head-up displays
