ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
发明人:
Hong Hua,Rengmao Wu,Yi Qin
申请号：
US15471994
公开号：
US20170285324A1
申请日:
2017.03.28
申请国别(地区):
US
年份:
2017
代理人:
摘要：
An optical element, wherein axially symmetric or not, an output surface of which contains a plurality of indentations configured to increase a degree of divergence of light that is incident onto such surface through an input surface of the optical element. In one implementation, each of the indentations defines a corresponding aspheric lenslet the plurality of which encircles the central opening in the optical element. The optical element can he configured as a lightguide having the specified output surface. An illumination system for a laparoscope employing such optical element as an addition to the optical fiber bundle of the laparoscope or as a fiber bundle itself that has the specified output surface.
