Image capturing apparatus and optical adjustment method

Abstract

An image capturing apparatus includes: at least one or more vertically movable lens groups among at least three or more lens groups, which constitute a zoom lens, movable in an optical axis direction, the vertically movable lens group being movable in a direction substantially perpendicular to the optical axis; a zoom lens group among the three or more lens groups, the zoom lens group being movable in the optical axis direction; and a correction mechanism that corrects a position of the optical axis based on the three or more lens groups by moving the vertically movable lens group in a wide-angle end state to a predetermined position in the substantially perpendicular direction. When the vertically movable lens group is moved for the purpose of anti-vibration at each zoom position in the substantially perpendicular direction, the apparatus is configured to satisfy the following Conditional Expression (1). 0.7<(Lw+Bw) / Bt<1.3 (1).

Description

[0001] References to related applications [0002] The present invention contains subject matter disclosed in Japanese Priority Patent Application JP2009-086541 filed in the Japan Patent Office on Mar. 31, 2009, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to an imaging device and an optical adjustment method, and can be suitably applied particularly to an imaging device such as a digital video camera or a digital still camera having a zoom mechanism. Background technique [0004] In the past, digital cameras using image pickup devices such as CCD (Charge Coupled Device) and CMOS (Complementary Metal Oxide Semiconductor) have spread rapidly and have become widespread. [0005] As described above, since digital cameras have become common, users' demands for a reduction in size, an increase in viewing angle, and especially an increase in magnification of a digital camera integrally formed with a lens ha...

AI Technical Summary

Problems solved by technology

[0006] However, there is a problem in that the amount of peripheral light at the four corners of the image pickup surface of the image pickup device in the wide-angle end state in lens design is reduced due to the influence of size reduction and increase in viewing angle

In addition, there is also a problem of reduction in the amount of peripheral light due to asymmetry (unbalance) in the amount of peripheral light caused by manufacturing differences.

Images