| 摘要 |
PURPOSE: A zoom lens is provided to miniaturize the camera. The subject can be a photograph of taken through the implementation of the wide angle in the more wide range. CONSTITUTION: A first lens group(G1), and the third lens group(G3) and fourth lens group(G4) have the definition refractive power. The second lens group(G2) has the refractive power of the part. In the magnification is the wide angle edge, it changes into the telephoto shift. The first lens group and the third lens group are fixed. In the second lens group is the object, it moves to the upper direction. |
