G - Physics – 02 – B
Patent
G - Physics
02
B
343/118, 88/9
G02B 17/00 (2006.01) F41G 11/00 (2006.01) G02B 27/01 (2006.01) G02B 27/10 (2006.01)
Patent
CA 1090176
ABSTRACT OF THE DISCLOSURE An on-axis, optical head-up display device, for use in fixed installations, vehicles or aircraft, utilizes a single block of transparent acrylic with the upper surface curved end coated to form a collimating mirror. The block itself is comprised of two major portions cemented together with a transparent bonding material wherein the resulting interface forms a combining surface. A generated image is transmitted from the focal plane of the collimating mirror upwardly through the combining surface; then it is reflected downwardly by the collimating mirror back to the combining surface which in turn serves to combine the generated image with a background view. The combined image is viewed by an observer through a back window of the block. Optical aberrations are reduced by extending the material of the block to the focal plane of the collimating mirror where an image generator is located.
290745
George H. Riches And Associates
Sundstrand Data Control Inc.
LandOfFree
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