Patent ID: 9618734
Date: 2017-04-11
CPC Classifications: G02B,G03F

Claim:
1. A non-spherical optical components exposer set, comprising: an optical lens set, comprising a first lens, a second lens, and a third lens arranged sequentially, forming a tri-lens, the first lens being non-spherical, the first and third lens having a positive curvature while the second lens has a negative curvature, the first and third lens having a curvature ratio ranged between 3 and 4, the third and second lenses having a curvature ratio ranged between −1 and 2.5; a spherical reflecting mirror, arranged below the third lens, to reflect a light path and control a dimension of a numerical aperture; and a planar reflecting mirror set, comprising a first planar reflecting mirror and a second planar reflecting mirror, inclinedly arranged above the first lens to guide the light path and wherein each of adjacent lens among the first, second, and third lens have a pitch smaller than a pitch between the third lens and the reflecting mirror set, so that an equi-multiplication exposer set is formed so as to impinge a pattern of an object onto a photosensitive surface after being focused by the spherical reflecting mirror, the optical lens set, and the planar reflecting mirror set.