Electronically scanned spectrometer color, brightness and...

Details Electronically scanned spectrometer color, brightness and... Electronically scanned spectrometer color, brightness and...

G - Physics

01

J

73/55

G01J 3/50 (2006.01) G01N 21/86 (2006.01)

Patent

CA 1201298

Abstract of the Disclosure Apparatus for measuring the color, brightness and opacity of a moving web in which light from a plurality of sources is directed towards and through a moving web. Light reflected from the surface of the web is conveyed by a plurality of light pipes to a first photodetector array located at a point remote from the web. A circular variable bandpass filter varies the wavelength of the radiation reaching the detector substantially continuously through the optical spectrum to produce a detector output which periodically scans the optical spectrum. The detector outputs at various wavelengths are weighted by a microcomputer to produce brightness and X, Y and Z tristimulus values. Light transmitted through the web is conveyed by a plurality of light pipes to a second photodetector array also located at a point remote from the web. The photodetector is also monitored by the microcomputer to provide an indication of the opacity of the web.

439699

Affiliated with

Also associated with

Rating

Electronically scanned spectrometer color, brightness and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electronically scanned spectrometer color, brightness and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronically scanned spectrometer color, brightness and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1321014