| 摘要 |
<p>PURPOSE:To facilitate the working and the assembling of a device and to easily change a filter by the rotating movement of a supporting body by forming a filter surface on the circumferential surface of the cylindrical supporting body which can be rotated. CONSTITUTION:By using the cylindrical supporting body 1 which can be rotated with an axial line as a center, the respective color filter parts 1R, 1G and 1B for RGB are arranged on the circumferential surface of the supporting body 1 by shifting the phase thereof in a circumferential direction. In the case, when one color filter part exists on the circumferential surface side of the supporting body 1 faced by interposing the axial line of the supporting body 1, target color resolution becomes impossible because the other color filter part is an obstacle. Then, a film-like filter material where the respective color filter parts 1R, 1G and 1B for RGB and a transparent belt-like part (dummy filter part 1R) are alternately arranged at the belt part of every 60 deg. phase obtained by dividing the whole 360 deg. circumference into 6 parts is wound and stuck on the supporting body 1. Thus, the working and the assembling of the device are facilitated and the filter is easily changed by the rotating movement.</p> |
