Apparatus for implementing a light-emitting diode meter

Details Apparatus for implementing a light-emitting diode meter Apparatus for implementing a light-emitting diode meter

2006-11-10

2009-06-09

Lauchman, L. G (Department: 2877)

Optics: measuring and testing

Photometers

C356S217000, C356S229000

Reexamination Certificate

active

07545488

ABSTRACT:
An light-emitting diode (LED) meter capable of analog presentations is disclosed. The LED meter includes an LED and a reflective object. The reflective object is capable of reflecting light emitted from the LED. The reflective object is also capable of being moved to and for along a path. The LED meter also includes means for selectively enabling the LED to emit light continuously for a duration that is proportional to a magnitude of measurement.

REFERENCES:
patent: 4218140 (1980-08-01), Biggs et al.
patent: 5748302 (1998-05-01), Unno
patent: 6005659 (1999-12-01), D'Alessandro et al.
patent: 6567160 (2003-05-01), Ishikawa et al.
patent: 6614518 (2003-09-01), Ishikawa et al.

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