| abstract |
PROBLEM TO BE SOLVED: To provide an endoscope apparatus capable of realizing switching of observation light without causing an increase in size of the apparatus. A laser diode 8 that emits light of a specific wavelength is provided as a light source, and a diffusion optical member 23 that diffuses laser light and irradiates it forward is provided at the tip of an insertion portion 1. An adapter 11 is detachably provided at the distal end of the insertion portion 1. The adapter 11 is provided with a phosphor 21 that generates light of another wavelength using the light from the light source as excitation light, and a cylindrical reflection member 24 that is a diffusion preventing member is disposed on the back of the phosphor 21. In a state where the adapter 11 is not attached, a laser beam having a specific wavelength is diffused by the diffusing optical member 23 and is irradiated to the object 10 as it is. The reflecting member 24 efficiently enters the phosphor 21, and light that has been converted to another wavelength by the phosphor 21 is irradiated to the endoscopic object 10. [Selection] Figure 1 |