Endoscope optical system

Details Endoscope optical system Endoscope optical system

1996-08-08

1999-09-21

Smith, Jeffrey A.

Surgery

Endoscope

With tool carried on endoscope or auxillary channel therefore

600181, 359589, 359590, 359723, H04N 718

Patent

active

059546336

ABSTRACT:
An endoscope optical system is used in an endoscope which can be combined with at least two laser treatment units that produce different wavelengths. At least two filters for removing laser light are provided in the path of the optical system, and are arranged at positions where angles of incidence or emergence of a chief ray are different. In this way, even with the laser treatment units using a plurality of wavelengths, laser light of the plurality of wavelengths can be removed.

REFERENCES:
patent: 4170997 (1979-10-01), Pinnow
patent: 4418689 (1983-12-01), Kanazawa
patent: 4916534 (1990-04-01), Takahashi et al.
patent: 4987483 (1991-01-01), Tsukagoshi
patent: 4987884 (1991-01-01), Nishioka
patent: 5177605 (1993-01-01), Takahashi et al.

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