Photoelectric measuring device
AssigneeViptronic GmbH
InventorHans Pallingen
Life of this patent
Estimating the term…
Abstract
A device for the density or colorimetric measurement of a measured object, i.e., a densitometer or colorimeter, comprising a light source for directing measurement light onto an object to be measured, a polarization filter positioned between the light source and the object to be measured, a photoelectric sensor, a second polarization filter positioned between the object to be measured and the sensor, at least one of the polarization filters for electronic control of polarization plane orientation, a measurement lens for directing the measurement light originating from a measurement location of the measured object through the second polarization filter and onto the sensor and a controller for electronically rotating the polarization plane for one of the polarization filters relative to the other by 90°.
Claims6
A device for density or colorimetric measurement of a measured object, comprising a light source for directing measurement light onto an object to be measured, a first polarization filter positioned between the light source and the object to be measured, a photoelectric sensor, a second polarization filter positioned between the object to be measured and the photoelectric sensor, at least one of the two polarization filters being constructed for electronic control of polarization plane orientation, a measurement lens for directing the measurement light originating from a measurement location of the measured object through the second polarization filter and onto the photoelectric sensor, and means for electronically rotating the polarization plane for at least one polarization filter relative to that of the other polarization filter by 90°.
A device for density or colorimetric measurement of a measured object, comprising a light source for directing measurement light onto an object to be measured, a first polarization filter positioned between the light source and the object to be measured, a photoelectric sensor, a second polarization filter positioned between the object to be measured and the photoelectric sensor, at least one of the two polarization filters being constructed for electric control of polarization plane orientation, a measurement lens for directing the measurement light originating from a measurement location of the measured object through the second polarization filter and onto the photoelectric sensor, means for electronically rotating the polarization plane for at least one polarization filter relative to that of the other polarization filter by 90°, a control electronic providing a control voltage required for operation of at least one polarization filter being constructed for electric control of polarization plane orientation, and at least one control key for manually switching the polarization plane orientation of at least one polarization filter being constructed for electric control of polarization plane orientation.
Dependencies are inferred from the claim text.