HYBRID ACHROMATIC OPTICAL LENS AND MANUFACTURING METHOD THEREOF

摘要

PURPOSE: A hybrid achromatic optical lens and a manufacturing method thereof are provided to eliminate chromatic aberration by forming a refractive surface and a diffraction surface on a lens. CONSTITUTION: An optical lens(30) is comprised of a first optical member(31) and a second optical member(33) which is buried in the first optical member(31). The first optical member(31) is a flat type and has a low refractive index less than 1.5. The second optical member(33) has a high refractive index greater than 2.0. A surface where the first and second optical members(31,33) contact to each other is a diffraction surface(34). The diffraction surface(34) is formed such that a plurality of pitches are formed on a refractive surface(32).