Variable-power imaging optical system and imaging device

• Main Author: NODA TAKAYUKI
• Format: Patent
• Language: English
• Published: 26.07.2007
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

A variable-power imaging optical system is provided and includes three, negative, positive and positive lenses. A first group includes a negative lens and a positive lens. A second lens group includes a positive lens, a negative lens and an aberration-correcting lens. A third lens group includes an...