| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wide angle lens of a large diameter with a high optical performance, the wide angle lens reducing ghosts and flares while excellently correcting various aberrations, especially sagittal coma flares, and to provide an imaging apparatus provided with the same. <P>SOLUTION: The wide angle lens has a first lens group G1 having positive refractive power and a second lens group G2 having the positive refractive power arranged in the order from the object side. The first lens group G1 is fixed with respect to an image plane I during focusing, and is provided with a negative lens component L11, a first positive lens component L12 and a second positive lens component L13, and at least one of the first positive lens component L12 and the second positive lens component L12 has a cemented lens. On at least one of optical surfaces in the lens components configuring the first lens group G1 and the second lens group G2, an antireflective film including at least one layer formed by using a wet process is formed. <P>COPYRIGHT: (C)2010,JPO&INPIT |
