| 摘要 |
A pair of prisms arranged in a complementary relationship provides for anamorphic magnification and cooperates with a curved refractive element, the later of which generates an aberration that at least partially compensates an aberration generated by the pair of prisms. Examples of the curved refractive element include, but are not limited to, a cylindrical lens, a curved substrate of optical material, a pair of counter-rotatable cylindrical lenses, a fluid-filled cylindrical lens with variable power incorporating a substrate that is deformed by a clamp mechanism over a fulcrum or curved surface, and at least one curved surface of fixed or variable curvature of the prisms, the later of which may be fluid-filled. In one embodiment, a color image is generated as a composite of images from different image modulators, each modulating a different color, and chromatic aberration is compensated by electronically scaling or shifting images from different image modulators differently.
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