Projection optical system

A projection optical system for projecting, while enlarging, an image formed on an image formation surface onto an image projection surface from an oblique direction relative thereto has at least three optically powered reflective surfaces and a refractive lens surface having a non-rotation-symmetri...

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Hauptverfasser:	Imaoka, Masayuki, Masubuchi, Tomokazu, Ishihara, Jun
Format:	Patent
Sprache:	eng
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creator	Imaoka, Masayuki Masubuchi, Tomokazu Ishihara, Jun
description	A projection optical system for projecting, while enlarging, an image formed on an image formation surface onto an image projection surface from an oblique direction relative thereto has at least three optically powered reflective surfaces and a refractive lens surface having a non-rotation-symmetric free-form curved surface and disposed between the first and second reflective surfaces as counted from the image formation surface side.
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title	Projection optical system
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