Imaging optical lens assembly

摘要

An imaging optical lens assembly includes an aperture stop and an optical assembly, the optical assembly includes, in order from the object side to the image side: a first lens element with a positive refractive power; a second lens element with a refractive power; a third lens element with a refractive power; a fourth lens element with a refractive power; a fifth lens element with a negative refractive power having an image-side surface being convex near an optical axis; wherein the image-side surface of the fifth lens element is formed with at least two inflection points, including a first inflection point and a second inflection point further away from the optical axis, a vertical distance from the first inflection point to the optical axis is Y_inf1, a vertical distance from the second inflection point to the optical axis is Y_inf2, satisfying: 1.7

主权项

1. An imaging optical lens assembly comprising an aperture stop and an optical assembly, the optical assembly comprising: in order from an object side to an image side:
a first lens element with a positive refractive power having an aspheric object-side surface and an aspheric image-side surface; a second lens element with a refractive power having an aspheric object-side surface and an aspheric image-side surface, the second lens element being made of plastic material; a third lens element with a refractive power having an aspheric object-side surface and an aspheric image-side surface, the third lens element being made of plastic material; a fourth lens element with a refractive power having an aspheric object-side surface and an aspheric image-side surface, the fourth lens element being made of plastic material; a fifth lens element with a negative refractive power having an aspheric object-side surface and an aspheric image-side surface being convex near an optical axis, the fifth lens element being made of plastic material; wherein the image-side surface of the fifth lens element is formed with at least two inflection points, including a first inflection point and a second inflection point further away from the optical axis, a vertical distance from the first inflection point to the optical axis is Y_inf1, a vertical distance from the second inflection point to the optical axis is Y_inf2, and the following condition is satisfied:
1.7