Laser power meter

Details Laser power meter Laser power meter

1975-03-31

1976-06-29

Corbin, John K.

Optics: measuring and testing

Photometers

Photoelectric

356224, G01J 142

Patent

active

039663256

ABSTRACT:
A laser power meter is described which enables the direct measurement of the output power of lasers over a full range of differing beam wavelengths. The laser power meter includes not only the photocell for intercepting a laser beam and the needle-scale meter conventionally provided, but also calibration means for simple adjustment of the meter to provide a correct power reading irrespective of the wavelength of the beam whose power is being measured. The calibration means includes first and second pluralities of resistors which are selectively connected in series between the photocell and the needle-scale meter by switches which are calibrated in nanometers. A user of the device is able to obtain a true reading of the power in a laser beam merely by "dialing in" the wavelength of the beam and selecting the proper power range for the needle-scale meter.

REFERENCES:
patent: 3336481 (1967-08-01), Nelson
patent: 3369447 (1968-02-01), Gallaway et al.
patent: 3753388 (1973-08-01), Toyoda

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