Eyeglass lens measuring apparatus, method for distinguishing upper portion from lower portion of eyeglass lens, and point marking adapter

摘要

An eyeglass lens measuring apparatus includes a measuring optical system configured to measure optical properties of an eyeglass lens for the right eye and optical properties of an eyeglass lens for the left eye; and a point marking mechanism including a first point marking member configured to provide a first mark point defining an optical center and an astigmatic axis of the eyeglass lens which are acquired by using the measuring optical system, and a second point marking member configured to provide a second mark point defining an upper portion and a lower portion of the eyeglass lens, wherein the point marking mechanism is configured to provide the eyeglass lens for the right eye and the eyeglass lens for the left eye respectively with the second mark points almost the same in position.

主权项

1. An eyeglass lens measuring apparatus comprising:
a measuring optical system configured to measure optical properties of an eyeglass lens for the right eye and optical properties of an eyeglass lens for the left eye; and a point marking mechanism including a first point marking member configured to provide a first mark point defining an optical center and an astigmatic axis of the eyeglass lens which are acquired by using the measuring optical system, and a second point marking member configured to provide a second mark point defining an upper portion and a lower portion of the eyeglass lens.