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SYSTÈME OPTIQUE D'ÉCLAIRAGE D'ENDOSCOPE
专利权人:
Olympus Corporation
发明人:
申请号:
EP16844035.2
公开号:
EP3348182A1
申请日:
2016.07.05
申请国别(地区):
EP
年份:
2018
代理人:
摘要:
There is provided an endoscope illuminating optical system in which a favorable light-distribution can be achieved even in a case of a wide in-water angle of view, and which is suitable for mounting in a medical endoscope having a thin diameter.An endoscope illuminating optical system at a front end of an insertion portion of endoscope includes a lens L which is disposed at a front-end side of the insertion portion, and a light guide 2 which is disposed adjacent to the lens, wherein a surface of a lens L facing the light guide 2 is a composite concave surface 12 in which two axisymmetric concave surfaces are overlapped, and has a gourd-shaped effective cross-section, and an effective range of the light guide 2 has a shape of a non-circular end surface having a long axis in a longitudinal direction of the gourd-shaped effective cross-section on a side of the surface of the lens L facing the light guide side, and a short axis in a direction perpendicular to the long axis.
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