A zoom lens for digital image capturing apparatus is a shared lens of digital static cameras and digital video cameras. It contains three lens groups. From the object plane to the image plane, the first lens group has a negative refractive power, the second lens group has a positive refractive power, and the third lens group has a positive refractive power. As the focal length of the zoom lens changes from long (telescope) to short (wide-angle), the second lens group moves from the object plane to the image plane. The third lens group and the first lens group move with the second lens group.

 
Web www.patentalert.com

< Light amount adjusting device, and optical device using the light amount adjusting device

< Mapping device

> On-vehicle image pick-up apparatus and method of setting image pick-up direction

> Zoom lens, camera, and mobile information terminal

~ 00254