Image acquisition device and image acquisition device focusing method

• Main Authors: OISHI HIDESHI, TOKIWA MASAHARU
• Format: Patent
• Language: English
• Published: 27.01.2016
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; HOLOGRAPHY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

In this image acquisition device (M), through the arrangement of an optical path difference generating member (21), a difference in optical path length of a second optical image can be formed without optical branching in a second optical path (L2) used for focus control. Consequently, the amount of...