Source: http://www.google.com/patents/US7843550?dq=patent:4807115
Timestamp: 2014-07-24 23:06:35
Document Index: 43334465

Matched Legal Cases: ['art 34', 'art 34', 'art 34', 'art 34', 'art 34', 'arts 36', 'arts 36', 'arts 36', 'arts 36', 'Application No. 2005', 'Application No. 2005', 'Application No. 2005']

Patent US7843550 - Projection optical system inspecting method and inspection apparatus, and a ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsIn the inspection apparatus of this projection optical system, a folding glass member, comprising a flat surface part and a reflecting spherical surface part opposing to the flat surface part, is disposed on the image plane side of the projection optical system so that the flat surface part opposes to...http://www.google.com/patents/US7843550?utm_source=gb-gplus-sharePatent US7843550 - Projection optical system inspecting method and inspection apparatus, and a projection optical system manufacturing methodAdvanced Patent SearchPublication numberUS7843550 B2Publication typeGrantApplication numberUS 11/606,909Publication dateNov 30, 2010Filing dateDec 1, 2006Priority dateJul 25, 2003Fee statusPaidAlso published asEP1650787A1, EP1650787A4, US7868997, US20060176457, US20070076181, WO2005010960A1Publication number11606909, 606909, US 7843550 B2, US 7843550B2, US-B2-7843550, US7843550 B2, US7843550B2InventorsMikihiko Ishii, Yutaka Ichihara, Takashi GemmaOriginal AssigneeNikon CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (104), Non-Patent Citations (20), Referenced by (3), Classifications (16), Legal Events (1) External Links: USPTO, USPTO Assignment, EspacenetProjection optical system inspecting method and inspection apparatus, and a projection optical system manufacturing methodUS 7843550 B2Abstract In the inspection apparatus of this projection optical system, a folding glass member, comprising a flat surface part and a reflecting spherical surface part opposing to the flat surface part, is disposed on the image plane side of the projection optical system so that the flat surface part opposes to the projection optical system. Further, in a state wherein a liquid is supplied between the projection optical system and the folding glass member, a measuring beam emitted from an interferometer unit enters the projection optical system; the measuring beam that transmitted through the projection optical system and the liquid, and entered the folding glass member is reflected by the reflecting spherical surface part, and once again passes through the liquid and the projection optical system; and the interference fringes obtained from the measuring beam and the reference beam generated within the interferometer unit are detected.
SUMMARY OF THE INVENTION The present invention provides a projection optical system inspecting method that inspects the optical performance of a projection optical system used for immersion exposure, wherein a liquid is supplied to an image plane side of the projection optical system; and a measuring beam that passes through the projection optical system and the liquid is photoelectrically detected.
Third Embodiment The following explains the third embodiment of the present invention. The inspection apparatus according to the third embodiment of the present invention is constituted substantially the same as the inspection apparatus depicted in FIG. 1, but differs in that, instead of the folding glass member 8, a holder 33, wherein a reflecting spherical surface part 34 depicted in FIG. 4 is formed, is disposed on the stage 9. FIG. 4A and FIG. 4B depict the constitution of the reflecting spherical surface part 34 and the holder 33 provided in the inspection apparatus according to the third embodiment of the present invention; FIG. 4A is a cross sectional view of the reflecting spherical surface part 34 and the holder 33, and FIG. 4B is a top oblique view of the reflecting spherical surface part 34 and the holder 33.
Fourth Embodiment The following explains the fourth embodiment of the present invention. The inspection apparatus according to the fourth embodiment of the present invention is constituted substantially the same as the inspection apparatus depicted in FIG. 3, but differs in that, instead of the holder 33 provided on the stage 9 and wherein the reflecting spherical surface part 34 is formed, a holder 35 is provided wherein a plurality of reflecting spherical surface parts 36 are formed. FIG. 5A and FIG. 5B depict the constitution of the reflecting spherical surface parts 36 and the holder 35 provided in the inspection apparatus according to the fourth embodiment of the present invention; FIG. 5A is a cross sectional view of the reflecting spherical surface parts 36 and the holder 35, and FIG. 5B is a top oblique view of the reflecting spherical surface parts 36 and the holder 35.
Sixth Embodiment The following explains the inspection apparatus according to the sixth embodiment of the present invention. The inspection apparatus according to the first through fifth embodiments discussed above is a stand-alone apparatus that measures the optical performance of the projection optical system PL, which is the object to be inspected. The inspection apparatus according to the sixth embodiment of the present invention explained below is provided with an exposure apparatus. Furthermore, the exposure apparatus of the present embodiment can use a liquid immersion exposure apparatus, as disclosed in, for example, International Publication WO99/49504. In addition, the exposure apparatus of the present embodiment is constituted so that an inspection apparatus 80, as disclosed in Japanese Unexamined Patent Application, First Publication No. 2000-97616, is detachably attached to a wafer stage that holds the wafer.
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Owa; "Immersion Lithography," Slides 1-24, Immersion Lithography Workshop, Dec. 11, 2002.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS8154708Jul 7, 2006Apr 10, 2012Asml Netherlands B.V.Lithographic apparatus and device manufacturing methodUS8482845Feb 2, 2010Jul 9, 2013Asml Netherlands B.V.Lithographic apparatus and device manufacturing methodUS20130128215 *Jul 13, 2012May 23, 2013Santec CorporationWavelength selective optical switching devices* Cited by examinerClassifications U.S. Classification355/53, 355/30International ClassificationG01M11/02, G03F7/20, G03B27/52, G03B27/42Cooperative ClassificationG01M11/0214, G01M11/0257, G03F7/70341, G03F7/706, G01M11/0271European ClassificationG01M11/02D4, G01M11/02A2, G01M11/02D6, G03F7/70L6B, G03F7/70F24Legal EventsDateCodeEventDescriptionApr 30, 2014FPAYFee paymentYear of fee payment: 4RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google