WO2002057832A3 - Combined wavefront coding and amplitude contrast imaging systems - Google Patents

Combined wavefront coding and amplitude contrast imaging systems Download PDF

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Publication number
WO2002057832A3
WO2002057832A3 PCT/US2002/001095 US0201095W WO02057832A3 WO 2002057832 A3 WO2002057832 A3 WO 2002057832A3 US 0201095 W US0201095 W US 0201095W WO 02057832 A3 WO02057832 A3 WO 02057832A3
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WO
WIPO (PCT)
Prior art keywords
wavefront
imaging systems
wavefront coding
contrast imaging
focus
Prior art date
Application number
PCT/US2002/001095
Other languages
French (fr)
Other versions
WO2002057832A2 (en
Inventor
Edward Raymond Dowski Jr
Original Assignee
Cdm Optics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cdm Optics Inc filed Critical Cdm Optics Inc
Priority to EP02704132A priority Critical patent/EP1354235A2/en
Priority to AU2002237832A priority patent/AU2002237832A1/en
Publication of WO2002057832A2 publication Critical patent/WO2002057832A2/en
Publication of WO2002057832A3 publication Critical patent/WO2002057832A3/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/50—Optics for phase object visualisation

Abstract

The present invention provides extended depth of field or focus to conventional Amplitude Contrast imaging systems (100). This is accomplished by including a Wavefront Coding element (422) in the system to apply phase variations to the wavefront transmitted by the Phase Object (408) being imaged. The phase variations induced by the Wavefront Coding mask code the wavefront and cause the optical transfer function to remain essentially constant within some range away from the in-focus position. This provides a coded image (418) at the detector (420). Post processing (424) decodes this coded image, resulting in an in-focus image over an increased depth of field.
PCT/US2002/001095 2001-01-19 2002-01-15 Combined wavefront coding and amplitude contrast imaging systems WO2002057832A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP02704132A EP1354235A2 (en) 2001-01-19 2002-01-15 Combined wavefront coding and amplitude contrast imaging systems
AU2002237832A AU2002237832A1 (en) 2001-01-19 2002-01-15 Combined wavefront coding and amplitude contrast imaging systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/766,325 US6873733B2 (en) 2001-01-19 2001-01-19 Combined wavefront coding and amplitude contrast imaging systems
US09/766,325 2001-01-19

Publications (2)

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WO2002057832A2 WO2002057832A2 (en) 2002-07-25
WO2002057832A3 true WO2002057832A3 (en) 2003-05-01

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US (1) US6873733B2 (en)
EP (1) EP1354235A2 (en)
AU (1) AU2002237832A1 (en)
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AU2002237832A1 (en) 2002-07-30
US6873733B2 (en) 2005-03-29
WO2002057832A2 (en) 2002-07-25
EP1354235A2 (en) 2003-10-22
US20020196980A1 (en) 2002-12-26

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