| 摘要 |
A light guiding unit is provided which can reflect light from one light source such that a plurality of irradiated light can be intermittently seen while allowing all portions of the plurality of irradiated light to be uniformly seen. The light guiding unit includes: an input member 1 where light from a light source is input, a first reflecting member 2 that has reflecting surfaces 2A to 2F which divide light from the input member 1 into for example six directions and then radially reflect the light, a second reflecting member 3 that has reflecting surfaces 3A to 3F which reflect light from each of the reflecting surfaces 2A to 2F of the first reflecting member 2 along the principal optical axis, and an irradiation member 4 that has irradiation surfaces 4A to 4F which irradiate light from each of the reflecting surfaces 3A to 3F of the second reflecting member 3. The irradiation surfaces 4A to 4F are separated from each other on the circumference centered on the principal optical axis. Each of the six light paths from the first reflecting member 1 up to the irradiation surfaces 4A to 4F are arranged so as to have a rotationally symmetric relationship of 60° centered on the principal optical axis L. |
