The present invention relates to a light-curing or cutting device with image observation, which drives a light source seat and an imaging module, making the light generated by an ultraviolet light source or laser source of the light source seat conducted by a guide hole and a lightpipe body of a lightpipe of an optic mechanism module and projected out from an end opening of the lightpipe body, so that the ultraviolet light conducted out is irradiated to a UV curable material to harden the material, or the laser conducted out is irradiated to carry out a cutting operation. The imaging module is also guided by the guide hole and the lightpipe body of the lightpipe of the optic mechanism module to obtain an image of the end opening of the lightpipe body, which is displayed on a display device that is connected to a cable of an image control unit of the imaging module. An operator may directly observe the display device to carry out the operation, so as to prevent the eyes of the operator from being irradiated and hurt by the intensive ultraviolet light or the laser. Further, the operator may use the imaging module to accurately obtain images to be transmitted to the display device, achieving the efficacies of use safety and observation convenience.本創作係一種具影像觀測之光固化或光切割裝置,其驅動光源座體及影像模組,使光源座體之紫外線光源體或雷射光源體將產生之光源,經由光學機構模組之導光管導孔及導光管體之導光管身導引,並由導光管身之端部開口照射出,使導出之紫外光照射UV固化材料而硬化,或使導出之雷射光照射進行切割,且影像模組亦經由光學機構模組之導光管導孔及導光管體之導光管身導引,取得導光管身之端部開口影像,並由影像模組之影像控制單元所設導線連接之顯示器顯示,操作者可直接檢視顯示器進行操作,防止操作者眼睛受紫外線或雷射光強光之照射而受傷,且操作者可透過影像模組精確的取得影像傳遞至顯示器,以達使用安全性及觀測便利性佳之功效。(10)...光學機構模組(20)...光源座體(30)...影像模組(40)...導光管組(41)...導光管身部(42)...結合座部(43)...濾光片(板)