Laser grid for measuring distance

Optics: measuring and testing – Position or displacement

Reexamination Certificate

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Details

C356S003050, C356S003060, C250S221000, C250S341700

Reexamination Certificate

active

07034950

ABSTRACT:
The laser grid (1) permits a single-sided installation in order to record a person or object in the monitoring area. The grid operates using punctiform sensor units (3), each including at least one laser diode and two photosensitive pixels. The sensor units are arranged in a line in a housing (2).

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Profos/Pfeifer, “Handbook of Industrial Measurement Techniques”, 5th Edition, Munich, Oldenbourg, (1992), p. 474.
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Meinert, “Hintergrundausblendung Bei Lichttastern”, Feinwerktechnik + Messtechnik, Carl Hanser Verlag, vol. 97, No. 6, (Jun. 1, 1989), pp. 261-264.

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