ASPHERICAL MIRROR, OPTICAL AXIS ALIGNING DEVICE FOR ASPHERICAL MIRROR, ASPHERICAL LENS, OPTICAL AXIS ALIGNING DEVICE FOR ASPHERICAL LENS, AND CASSEGRAIN TELESCOPE

摘要

The purpose of the present invention is to provide an aspherical mirror and an aspherical lens that allow for easy and reliable optical axis alignment. An aspherical mirror according to the present invention is characterized by having a plane mirror provided at the periphery or the central part of the aspherical mirror and the normal line to the plane mirror being parallel to the optical axis of the aspherical mirror. An aspherical lens according to the present invention is characterized by having a plane mirror provided at the periphery of the aspherical lens and the normal line to the plane mirror being parallel to the optical axis of the aspherical lens.