<http://webisa.webdatacommons.org/prov/502474473>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/332085648> .
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<http://webisa.webdatacommons.org/332085648>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/332085648>	<http://www.w3.org/ns/prov#value>	"urface configuration that corrects aberrations due to decentration, wherein the following condition is satisfied: 0.5<D/f<2.5???(6-1) where D is a thickness of said image-forming optical system, and f is a mean focal length of said image-forming optical system, wherein said thickness D of said image-forming optical system is a thickness of said image-forming optical system measured from an image p" .