| 摘要 |
The joint is illuminated using light sources located on the light transmission path from a prism to an image sensor (11). These light sources are connected to the upper ends of light guiding fibers (23) included in the illumination unit. The lower ends of these fibers are located at the light entrance surface of the prism (27). The prism is used to deflect light and has a light entrance opening. The image sensor detects light deflected by the prism and can be connected to a display. |
