| 摘要 |
PURPOSE:To enable an operator and an assistant, etc., to arbitrarily and selectively observe the same or different observation images. CONSTITUTION:A half prism 13 for splitting optical paths in two lens-barrel 4, 5 directions and 1st and 2nd mirrors 12, 14 which can advance and retreat and exist before and behind this prism are provided on the optical paths R, L for the microscopic observation image within a changeover adapter 3. Monitors 17a, 17b which receive the video signals of the endoscopic observation images via switch circuit 41 and project the images are provided. A 3rd mirror 19 which can advance and retreat and bends the luminous flux of the 1st mirror 12 and a stationary mirror 20 which bends the luminous flux to the 2nd mirror 14 are provided on the optical paths R'', L''. The driving circuit and switch circuit of the 1st to 3rd mirrors 19 are turned on and off according to the observation modes selected by the switch, by which the observation images with both lens-barrels 4, 5 are selected. |
