Camera for capturing moving images

摘要

Provide a camera capable of effectively suppressing image blurring even when high frequency vibrations are imposed. The present invention is a camera for capturing moving images furnished with an image-blur prevention function, including an imaging unit (16) for capturing moving picture images and a support frame (12) equipped with a vibration-isolating support mechanism (18) for supporting this imaging unit; the imaging unit has imaging optics (22), an imaging element (20), and an anti-vibration mechanism (24) for stabilizing formed images; assuming Sa(f) denotes the rate in dB of vibration attenuation produced by an anti-vibration mechanism, Sp(f) denotes the rate in dB of vibration attenuation produced by a vibration-isolating support mechanism, So denotes a predetermined target dB rate of attenuation, and 2f0 denotes a frame rate frequency for moving pictures captured by the imaging unit, then at frequencies at or greater than f0, the expression Sa(f)+Sp(f)

主权项

1. A camera for capturing moving images furnished with an image-blur prevention function, comprising:
an imaging unit for capturing moving images; and a support frame provided with a vibration-isolating support mechanism for supporting the imaging unit; wherein the imaging unit includes: imaging optics; an imaging element for receiving light focused by the imaging optics; and an anti-vibration mechanism for stabilizing images formed on the imaging element; and wherein the anti-vibration mechanism and the vibration-isolating support mechanism are adapted to satisfy the inequality:
Sa(f)+Sp(f)=f0 where Sa(f) denotes the rate in dB of vibration attenuation produced by the anti-vibration mechanism at a frequency f, Sp(f) denotes the rate in dB of vibration attenuation produced by the vibration-isolating support mechanism at a frequency f, S0 denotes a predetermined target dB rate of attenuation, and 2fo denotes a frame rate frequency for moving images captured by the imaging unit.