Optical measurement device including internal spectral reference
AssigneeViavi Solutions Inc.
InventorsWilliam D. HOUCK, Valton SMITH
Life of this patent
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Abstract
An optical measurement device may include a light source; an emission optic configured to direct a first portion of light generated by the light source to a measurement target; a collection optic configured to receive light from the measurement target; an optical conduit configured to direct a second portion of light generated by the light source to a spectral reference; the spectral reference; a sensor; and a filter. A first portion of the filter may be provided between the collection optic and a first portion of the sensor. A second portion of the filter may be provided between the spectral reference and a second portion of the sensor.
Claims20
An optical measurement device, comprising:
- a filter comprising a first optical filter portion and a second optical filter portion;
- a blocking component separating the first optical filter portion and the second optical filter portion;
- a spectral reference comprising a plurality of spectral reference portions,
- wherein the plurality of spectral reference portions comprises:
- a first spectral reference portion associated with a first reflectivity, and
- a second spectral reference portion associated with a second reflectivity that is different from the first reflectivity;
- and
- a light source configured to:
- emit a first light beam that is reflected by the first spectral reference portion and transmitted to the second optical filter portion, and
- emit a second light beam that is reflected by the second spectral reference portion and transmitted to the second optical filter portion.
A device, comprising:
- a filter comprising an optical filter portion;
- a spectral reference comprising a plurality of spectral reference portions,
- wherein the plurality of spectral reference portions comprises:
- a first spectral reference portion associated with a first reflectivity, and
- a second spectral reference portion associated with a second reflectivity that is different from the first reflectivity;
- and
- a light source configured to:
- emit a first light beam that is reflected by the first spectral reference portion and transmitted to the optical filter portion, and
- emit a second light beam that is reflected by the second spectral reference portion and transmitted to the optical filter portion.
A device, comprising:
- a filter comprising a first optical filter portion and a second optical filter portion,
- wherein the second optical filter portion comprises a plurality of reflective areas,
- wherein the plurality of reflective areas comprises:
- a first reflective area associated with a first reflectivity, and
- a second reflective area associated with a second reflectivity that is different from the first reflectivity;
- and
- a light source configured to:
- emit a first light beam that is transmitted to the first reflective area, and
- emit a second light beam that is transmitted to the second reflective area.
Dependencies are inferred from the claim text.