Eye/lens refractive power measuring device

Abstract

Abstract PURPOSE:To achieve a handy measurement, by arranging a contact member with a lens to be measured at a position which a front eye to be inspected reaches on the optical axis of an eye refraction meter and a transmission/ refraction optical member on the optical axis near the contract member. CONSTITUTION:When measuring a lens L to be inspected, with a support member 3 turned as indicated by the arrow A, a lens measuring section 2 is fixed at a specified position on the optical axis 0 and the lens L being inspected is placed on the contact member 4 to measure the degree of refraction of the lens L being inspected utilizing an inherent measuring function. In other words, the lens L being inspected is arranged to reach the position of a front eye being inspected such as cornea at the center of the optical axis 0 through a reflecting mirror 8. If so, a diffusion surface 7 corresponds to the position of the eyeground and a measured value with an eye refraction meter 1 is equivalent to a refraction value obtained when the top distance of the cornea is almost zero.

Inventors

• 👤 Yoshi Kobayakawa
• 👤 小早川　嘉

Bibliographic Details