The present invention relates to a system for exposure measurement and/or focus detection by means of image senser such as photo diode array (MOS image senser), CCD (charge coupled devices) consisting of a plural number of adjacently disposed respectively integrated fine light sensing elements whereby...http://www.google.com.mx/patents/USRE31370?utm_source=gb-gplus-sharePatent USRE31370 - System for exposure measurement and/or focus detection by means of image sensor