| 摘要 |
PURPOSE: An image lens unit is provided to have five lenses, to have a short whole length suitable for a small camera module, and to provide a thin image optical system having high definition. CONSTITUTION: An image lens unit includes a first lens(10) having positive power, a second lens(20) having negative power and having a shape embossed to an image side, a third lens(30) having positive power, a fourth lens(40) having negative power and having a shape embossed to an object side in a proximal axis area, and a fifth lens(50) selectively having positive or negative power and having a shape recessed to the image side in the proximal axis area. The first lens, the second lens, the third lens, the fourth lens, and the fifth lens are successively arranged from a target object. [Reference numerals] (AA) Object side direction; (BB) Upward direction; (CC) Optic axis
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