| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an adjustable lens shade equipped with a lens cap, capable of always obtaining an optimal shading effect by corresponding to variation in image angle in a single step over the total zoom range of a camera's zoom lens, simply carrying out an operation of a rotational frame of a polarization filter, and being stored on the lens barrel side. <P>SOLUTION: A rotational frame of the polarization filter and the shade are integrated by attaching the shade of a half cylinder shape to the rotational frame of the polarization filter. Since it is necessary to match the shade and the polarization filter to a solar position due to their structures, both targets can be obtained simultaneously only by matching the shade to the solar position when the shade and the polarization filter are integrated. The shade is capable of corresponding to the variation in the image angle over the total zoom area of the zoom lens and being stored along the lens barrel without being detached from a lens by being rotated in a single step toward the direction of an optical axis with a shaft as a supporting point. Furthermore, an opening/closing type lens cap which does not need to be attached/detached is equipped. <P>COPYRIGHT: (C)2012,JPO&INPIT |
