The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Conventional auto-focusing camera modules adjust their optical focus by moving lenses. Although motors, such as stepping motors or voice coil motors, can change the lens position with great precision and thus vary the image sharpness, large volume and excess power consumption remain critical issues for mobile device applications. This paper discusses an auto-focusing camera module that adopts a microelectromechanical...