%0 Journal Article %T Application and experimental verification of phase-shift approach with rectangular-wave illumination for defect-inspection apparatus %A Onishi, Yoshito %A Seo, Yoshiho %A Matsuoka, Masaoki %A Serikawa, Shigeru %A Tsugane, Ken %J Proceedings of SPIE %V 12231 %P 122310C-122310C-6 %@ 0277-786X %D 2022-09-30 %I SPIE %~ DeepDyve