Photoelectric measuring device

G - Physics – 01 – N

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G01N 21/21 (2006.01)

Patent

CA 2390744

A device for the photoelectric measurement of a measured object constructed especially as densitometer or color measurement device includes a light source (1, 2) for exposure of the measured object (6) to measurement light, a polarization filter (8) located between the light source (1, 2) and the measured object (6), a photoelectric sensor (4), a second polarization filter (9) located between the measured object (6) and the sensor (4), a measurement lens (3), which directs the measurement light originating from a measurement location from the measurement object (6) through the second polarization filter (9) onto the sensor (4), and a control electronic (5) cooperating with the sensor (4) for the processing of the electrical signals produced thereby. At least one of the two polarization filters (9) is electronically controllable, whereby its polarization plane can be rotated by the controlled electronic (5) by 90° relative to that the other of the two polarization filters. The polarization filter (s) is (are) thereby constructed according to liquid crystal technology and preferably consist of several layers in order to reliably suppress light portions which are not located in the polarization plane. The rotation of the polarization plane and thereby the activation or deactivation of the shine suppression can be easily and quickly achieved purely electronically due to the electronically controllable construction of the polarization filter and by the application of suitable electrical signals.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Photoelectric measuring device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photoelectric measuring device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photoelectric measuring device will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1637488

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.