| 摘要 |
<p>Disclosed is a removable filter unit which is easily capable of selecting and transmitting fluorescence of a different wavelength. Also disclosed is an endoscope using such a removable filter unit. Specifically disclosed is a removable filter unit (41) which is removably attached to a front end (32) of an insertion portion (30) of an endoscope which comprises a light projector portion (33) for emitting light toward a body tissue and a solid-state imager (35) for sensing light returning from the body tissue. The removable filter unit (41) comprises a plurality of filters (50a, 50b) which transmit fluorescence of a different wavelength and block off the excitation light for generating the fluorescence among the lights returning from the body tissue.</p> |
