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Optical system and method for composing color images from chromatically non-compensated optics

  • US 6,590,612 B1
  • Filed: 03/18/1999
  • Issued: 07/08/2003
  • Est. Priority Date: 03/18/1999
  • Status: Expired due to Term
First Claim
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1. An optical system comprising:

  • an objective which receives electromagnetic radiation from an object, modifies the electromagnetic radiation, and emits the modified electromagnetic radiation as an image of the object;

    a focusing mechanism which controls the movement of the objective along at least one path to modify the image;

    one or more cameras which detect separate images for each of a plurality of frequency bands of the modified electromagnetic radiation of the image emitted by the objective; and

    an automatic focus controller which, in accordance with the detected images;

    (1) provides control parameters to the focusing mechanism; and

    (2) determines for each of the frequency bands, an optimal image which corresponds to an optimal focus of the objective for that frequency band.

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