| 摘要 |
PROBLEM TO BE SOLVED: To suppress the difference in light quantity between the center part and the peripheral part of an image to be formed on a sensor imaging face by reducing the quantity of light entering the sensor imaging face from the center part of an imaging lens. SOLUTION: An imaging part structure which forms an image of a light beam entering from an object on a sensor imaging face 611 by an imaging lens 205 (lenses, 51, 52, 53) is equipped with a light quantity reducing member 55 which partially reduces the quantity of light entering the sensor imaging face 611 from the imaging lens (lenses, 51, 52, 53). As a result, the quantity of light entering the sensor imaging face 611 is partially reduced by the light quantity reducing member 55. Especially, the quantity of the light entering the imaging face 611 from the center part of the imaging lens 205 is reduced by providing a mask 55 for light shielding at the center part of the imaging lens 205 (lens 52) as the light reducing member. Thus, even when a lens unit is miniaturized, the difference in light quantity between the center part and the peripheral part of the image to be formed on the sensor imaging face 611 is reduced. COPYRIGHT: (C)2005,JPO&NCIPI |
