发明名称 Hand-held light filter
摘要 The invention discloses a protective light shield to reduce the harmful effects of resin-curing lights used in dentistry. This is a shield made principally of a single sheet of filtering plastic, shaped in a convenient paddle configuration. The dimension of the filter-paddle is sufficient to block all direct and reflected light from the tooth of the patient that would possibly be seen by any personnel in the operatory. A portion of the paddle is provided with a magnifier which may be employed by the physician for closer inspection of the tooth being operated on. Additionally, a relatively thin intensity-filtering material is applied to the back of the light paddle so that the intensity of the filtered light is reduced for the increased comfort and protection of the physician.
申请公布号 US4640685(A) 申请公布日期 1987.02.03
申请号 US19850723332 申请日期 1985.04.15
申请人 CROLL, THEODORE P. 发明人 CROLL, THEODORE P.
分类号 A61C13/15;A61F9/02;(IPC1-7):A61C3/00 主分类号 A61C13/15
代理机构 代理人
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