Multi-purpose periscope with display and overlay capabilities
First Claim
Patent Images
1. A collimated periscope, said periscope comprising:
- a housing;
an upper prism arranged within said housing;
a lower prism arranged adjacent to said upper prism;
a display prism arranged adjacent to said lower prism;
a collimating optical assembly arranged adjacent to said display prism;
a flat panel display arranged adjacent to said collimating optical assembly; and
an electronically switchable mirror arranged on a surface of said lower prism.
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Abstract
A collimated periscope that is switchable between a normal optical view of the outside, a display view, and an overlay view in which the outside view and display view are combined. The switching element is an electronically switchable mirror with primarily reflective, primarily transparent, and intermediate states, depending on the application of electrical potentials.
39 Citations
28 Claims
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1. A collimated periscope, said periscope comprising:
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a housing; an upper prism arranged within said housing; a lower prism arranged adjacent to said upper prism; a display prism arranged adjacent to said lower prism; a collimating optical assembly arranged adjacent to said display prism; a flat panel display arranged adjacent to said collimating optical assembly; and an electronically switchable mirror arranged on a surface of said lower prism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of collimating a display image of a periscope, said method comprising the steps of:
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emitting linearly polarized or non-polarized light from a flat panel display arranged within a housing of the periscope; flattening a field of an image of said light with a field lens; transmitting said light with a beam splitter; collimating said light with a lens and concave mirror; reflecting said light with said beam splitter; correcting said image for distortions with a corrector device; and displaying said collimated image to a user of the periscope through an exit face. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification