Optical detection sensor

Details Optical detection sensor Optical detection sensor

2006-04-18

2006-04-18

Porta, David (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C340S556000

Reexamination Certificate

active

07030364

ABSTRACT:
Sensor(s) may be such that light-projecting component(s) and light-receiving component(s) are arranged therein. Furthermore, such sensor(s) may be provided with optical path varying means for varying projected light optical path(s) and/or received light optical path(s) so as to physically vary overlapping zone(s) in which the projected light optical path(s) and the received light optical path(s) at least partially overlap. The optical path varying means may carry out adjustment of optical sensitivity by increasing the extent(s) of the overlapping zone(s) when carrying out detection with respect to zone(s) distant from such sensor(s) and/or decreasing the extent(s) of the overlapping zone(s) when carrying out detection with respect to zone(s) proximate to such sensor(s).

REFERENCES:
patent: 4310756 (1982-01-01), Sick
patent: 4652205 (1987-03-01), Ross

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