| 摘要 |
An optical photographing system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The first lens element with positive refractive power has an object-side surface being convex at a paraxial region thereof. The second lens element with negative refractive power has an object-side surface being concave at a paraxial region thereof. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element with positive refractive power has an image-side surface being convex at a paraxial region thereof, and the surfaces thereof are aspheric. The sixth lens element with refractive power has an image-side surface changing from concave at a paraxial region thereof to convex at a peripheral region thereof, and the surfaces thereof are aspheric. |
