Methods of adjustment for image distortion with short throw interactive projector system

• Main Authors: MIYASHITA, YOSHIAKI, LAI, DING-ZHENG, CHEN, XIN-AN, HONG, HUI-TAI, WU, MING-HONG
• Format: Patent
• Language: Chinese; English
• Published: 16.02.2012
• 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; ELECTROGRAPHY; HOLOGRAPHY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHOTOGRAPHY; PHYSICS

The system according to the present invention includes an image projecting device and an image capturing device, wherein the image capturing device includes a wide-angle photographing lens, an image sensor and a displacement inclination mechanism. The effective image circle of the wide-angle photographing lens has a size larger than that of the image sensor. The wide-angle photographing lens and the image sensor are respectively configured on the displacement inclination mechanism. By the positional and angular adjustment of the displacement inclination mechanism, the optical axis of the image sensor is shifted relative to the wide-angle photographing lens, so as to enlarge the adjustment range for capturing the projected image. Furthermore, the optical axis of the wide-angel photographing lens is inclined with that of the image projecting device, so that the barrel or pincushion aberration would be converted into trapezoidal aberration in an optical correction manner, and the trapezoidal aberration can be ea