Extended depth of field imaging system using chromatic...

Optical: systems and elements – Lens – Multiple component lenses

Reexamination Certificate

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C359S355000, C235S462410, C250S339050

Reexamination Certificate

active

11048624

ABSTRACT:
An imaging system (FIG.3) is disclosed that has a wavelength dependent focal shift caused by longitudinal chromatic aberration in a lens assembly (203) that provides extended depth of field imaging due to focal shift (213,214) and increased resolution due to reduced lens system magnification. In use, multiple wavelengths of quasi-monochromatic illumination, from different wavelength LEDs (206,207) or the like, illuminate the target, either sequentially, or in parallel in conjunction with an imager (200) with wavelength selective (colored) filters. Images are captured with different wavelengths of illumination that have different focus positions (208,209), either sequentially or by processing the color planes of a color imager separately. Extended depth of field, plus high resolution are achieved. Additionally, information about the range to the target can be determined by analyzing the degree of focus of the various colored images.

REFERENCES:
patent: 5359185 (1994-10-01), Hanson
patent: 5386105 (1995-01-01), Quinn et al.
patent: 5418356 (1995-05-01), Takano
patent: 5438187 (1995-08-01), Reddersen et al.
patent: 5468950 (1995-11-01), Hanson
patent: 5623137 (1997-04-01), Powers et al.
patent: 5625495 (1997-04-01), Moskovich
patent: 5635699 (1997-06-01), Cherry et al.
patent: 5745176 (1998-04-01), Lebens
patent: 5748371 (1998-05-01), Cathey
patent: 5825044 (1998-10-01), Allen
patent: 5945670 (1999-08-01), Rudeen
patent: 6056198 (2000-05-01), Rudeen et al.
patent: 6073851 (2000-06-01), Olmstead et al.
patent: 6142376 (2000-11-01), Cherry et al.
patent: 6147816 (2000-11-01), Ori
patent: 6290135 (2001-09-01), Acosta et al.
patent: 6347742 (2002-02-01), Winarski
patent: 6493061 (2002-12-01), Arita et al.
patent: 6568594 (2003-05-01), Hendriks
patent: 6689998 (2004-02-01), Bremer
patent: 2006/0060653 (2006-03-01), Wittenberg et al.
patent: 2006/0164541 (2006-07-01), Olmstead
patent: 2006/0164736 (2006-07-01), Olmstead
patent: 56-50469 (1981-05-01), None
patent: 56050469 (1981-05-01), None
Modulation Transfer Function (no date); downloaded from http://www.mellesgriot.com/glossarywordlist/glossarydetails.asp?wID=263, visited May 2005.
Introduction to CMOS Image Sensors (2004); downloaded from http://micro.magnet.fsu.edu/primer/digitalimaging/cmosimagessensors.html, visited Nov. 2004.
Modulation Transfer Function (2003); downloaded from http://www.micro.magnet.fsu.edu/primer/anatomy/mtfhome.html, visited Nov. 2004.
Nikon Microcopy Modulation Transfer Function (no date), downloaded from http://www.microscopyu.com/articles/mtfintro.html, visited Nov. 2004.
The Lensmaker's Equation (no date), downloaded from http://physics.mtsu.edu/˜phys2020/Lectures/L1-L5/L3/Lensmakers/lensmakers.html, visited Jan. 2005.
The Electromagnetic Spectrum (no date) downloaded from http://csep10.phys.utk.edu/astr162/lect/light/spectrum.html, visited Jan. 2005.
Micro® Imaging Technology (2004); downloaded from http://micron.com/products/imaging/technology/index.html, visited Jan. 2005.
Jaroszewicz et al., “Lens Axicons: Systems Composed of a Diverging Aberrated Lens and a Perfect Converging Lens,”J. Opt. Soc. Am, vol. 15, No. 9, Sep. 1998, pp. 2383-2390.
Jaroszewicz et al., “Lens Axicons: Systems Composed of a Diverging Aberrated Lens and a Converging Aberrated Lens,”J. Opt. Soc. Am, vol. 16, No. 1, Jan. 1999, pp. 191-197.

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