Optical power meter
OwnerKatushi Ohtainventor
Life of this patent
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Abstract
An optical power meter is provided which can measure with high accuracy a power of a light-to-be-measured containing a plurality of wavelength of light and light-to-be-measured having a broad wavelength region without incurring cost rise and without the necessity for the user to input an wavelength of a light-to-be-measured. In an optical power meter for measuring a power of a light-to-be-measured, there are provided a photodiode having a sensitivity characteristic that sensitivity changes in accordance with a wavelength of a light incident on a light-receiving surface and a dielectric multi-layered film filter arranged on a side of the light-receiving surface of the photodiode and having a wavelength characteristic substantially reverse to the sensitivity characteristic of the photodiode.
Claims5
In an optical power meter for measuring a power of a light-to-be-measured, an optical power meter comprising:
- a light-receiving element having a sensitivity characteristic that sensitivity changes in accordance with a wavelength of a light incident on a light-receiving surface;
- and
- a correcting member arranged on a side of the light-receiving surface of the light-receiving element and having a wavelength characteristic substantially reverse to the sensitivity characteristic of the light-receiving element.
Dependencies are inferred from the claim text.