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EXTENDED DEPTH OF FIELD USING A MULTI-FOCAL LENGTH LENS WITH A CONTROLLED RANGE OF SPHERICAL ABERRATION AND A CENTRALLY OBSCURED APERTURE

  • US 20060050409A1
  • Filed: 05/05/2005
  • Published: 03/09/2006
  • Est. Priority Date: 09/03/2004
  • Status: Active Grant
First Claim
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1. An integrated computational imaging system for producing images having an extended depth of field comprising:

  • a multifocal imaging subsystem for producing an intermediate image that is purposefully blurred;

    the multifocal imaging subsystem exhibiting spherical aberration as the dominant feature of the purposeful blur;

    a central obscuration that cooperates with the spherical aberration to reduce variance among blurring effects through a range of defocused positions; and

    a digital processing subsystem for deblurring the intermediate image produced by the multifocal imaging subsystem and for calculating a recovered image having an extended depth of field.

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