Surface detection system for use with a droplet spray oral...

Details Surface detection system for use with a droplet spray oral... Surface detection system for use with a droplet spray oral...

2011-03-29

2011-03-29

Lauchman, L. G (Department: 2877)

Optics: measuring and testing

With plural diverse test or art

C356S448000, C433S080000

Reexamination Certificate

active

07916282

ABSTRACT:
The surface detection system includes a source of an optical interrogating signal (44) which accompanies a droplet spray in an oral cleaning device directed to an oral surface (46). The interrogating optical signal is reflected from the oral surface which the spray impacts and detected (48). A selected characteristic of the reflected signal, such as intensity, is indicative of the nature of the oral surface, such as either gum tissue or a tooth surface. The detected reflected signal is then processed to determine the nature of the oral reflecting surface. The processor (50) then provides a resulting output signal which can be used to either warn the user concerning the nature of the oral surface or to change the characteristics of the spray appropriately according to the surface (51).

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