Stefan Welker,Zhisheng Yun,Rudolf Schmid,Korbinian Gerlach
申请号：
US15305046
公开号：
US20170143461A1
申请日:
2015.04.16
申请国别(地区):
US
年份:
2017
代理人:
摘要：
A dental light irradiation device is adapted to emit blue light. The device has a light source, means for collimating light emitted from the light source, and a light guide. The light collimating means comprising:—a plano-convex lens oriented with the planar side toward the light source, and—a reflector formed by a hollow ring-shaped structure having an inner conical and reflective surface. The reflector is arranged such that its inner cross-section widens toward the lens and extends over the entire distance between the planar side of the lens and the light source. The light source being positioned substantially at the effective focal length of the lens, and the light guide having an input side for receiving light emitted from the light source and an output side for the light.
