| 摘要 |
An imaging system to accept an input image from an image source (701) and provide an output image, the system comprising: a refracting block (702) having first, second and third optical surfaces; a concave mirror surface (703) outside the third optical surface of said block; and an optical path (711, 712, 713) from an optical input to an optical output of the system; the optical path including transmission through the first optical surface, internal reflection at the second optical surface, reflection at the concave mirror surface and transmission through the second optical surface.
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