Optical proximity sensor for a liquid-jet instrument, and a...

Details Optical proximity sensor for a liquid-jet instrument, and a... Optical proximity sensor for a liquid-jet instrument, and a...

2005-10-20

2009-02-03

Le, Que T (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S239000

Reexamination Certificate

active

07485842

ABSTRACT:
An optical proximity sensor adapted to be mounted in a liquid-jet instrument having a spray head for spraying a jet of liquid. The optical sensor evaluates a distance between the sensor and a surface onto which the liquid is to be sprayed.

REFERENCES:
patent: 4412232 (1983-10-01), Weber et al.
patent: 4721384 (1988-01-01), Dietrich et al.
patent: 2004/0052569 (2004-03-01), Bich et al.
patent: 2 841 498 (2004-01-01), None

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