| 摘要 |
An operation device includes a rotational operation portion that is rotationally operated and includes an opening formed in the center of an upper portion and a transmissive region formed at a circumference portion of the opening to allow light to pass through, and an indicator portion that includes an exposed region exposed from the opening of the rotational operation portion, a transmissive-reflective region provided around the exposed region so as to face the transmissive region and indicators formed in the exposed region, the transmissive-reflective region transmitting a portion of artificial light travelling from its back surface and reflecting a portion of natural light incident on its front surface through the transmissive region. |
