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Optical system

  • US 6,201,648 B1
  • Filed: 09/24/1999
  • Issued: 03/13/2001
  • Est. Priority Date: 12/02/1996
  • Status: Expired due to Term
First Claim
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1. A microscope comprising:

  • an optical system provided in said microscope;

    wherein said optical system has at least an optical surface for one of transmitting light rays and reflecting light rays, said optical surface having a curved shape, said curved surface having no axis of rotational symmetry into or out of said optical surface, wherein rotationally asymmetric aberrations due to decentration are corrected by the rotationally asymmetric surface, and wherein said optical system comprises a first reflecting surface, a second reflecting surface, and a first transmitting surface, wherein light rays enter the optical system through the first transmitting surface and are reflected by the first reflecting surface and then reflected by the second reflecting surface to exit from the optical system through the first transmitting surface.

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