G - Physics – 03 – B
Patent
G - Physics
03
B
88/65
G03B 33/02 (2006.01) F21S 8/00 (2006.01) G03B 33/04 (2006.01) G09F 19/12 (2006.01)
Patent
CA 1097109
Serial No. 283 912 E.I. du Pont de Nemours and Company (Lee, Jerald Dana) ABSTRACT OF THE DISCLOSURE A device for producing variable colors from pro- jected white light and quantifying the color changes resulting therefrom is provided which is useful in color-styling designs and color shade matching. The device comprises (1) an adjust- able color filter having at least two primary-color areas upon which a portion of said projected white light is incident, (2) light-attenuation means which attenuate the quantity of light transmitted from (by attenuating either the incident white light or transmitted color light) each of the primary-color areas as well as the portion of the projected light which is transmitted unfiltered, and (3) control means comprising (a) a light-measuring unit for measuring the transmitted light and generating a signal proportional to the amount of light measured, (b) means responsive to said signal to determine the quantity of each component of transmitted light present and (c) means responsive to (b) for controlling each of the light- attenuation means. A particularly preferred and useful embodiment involves a multiplicity of such devices arranged such that the portion of a common design imaged by each device is in registration at a common plane, with every other portion of the design imaged by the other devices.
283912
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
LandOfFree
Device for producing variable colors does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for producing variable colors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for producing variable colors will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-781239