| 摘要 |
An image-forming lens set includes a first lens, an aperture, a second lens and a third lens arranged orderly from an objective side toward an image side in sequence. The first lens, the second lens and the third lens are made of plastic material. The first lens has a positive diopter and two opposite surfaces including a convex surface facing the objective side and having at least one of which be a non-spherical surface. The second lens has a negative diopter and two opposite surfaces including a concave surface facing the objective side and having at least one of which be a non-spherical surface. The third lens has a positive diopter and two opposite surfaces including a convex surface facing the objective side and having at least one of which be a non-spherical surface having an inflection point thereon.
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