Sphere instruments offer the advantage of measuring rough and very shiny surfaces well. For many color mixing applications in industry, this is a good approach. If you want to measure color with a sphere instrument similar to a 45-degree instrument it can be accomplished by allowing some of the surface light escape from the sphere. This is done by cutting a hole in the back of the sphere that can be covered or opened. Measuring color with the hole open is called specular component excluded.
Sphere instruments are more flexible and give a range of methods to measure a variety of materials.
A cut can be made in the instrument behind the sphere and a transmission section added to allow both reflection and transmission color measurements. Procedures need to be implemented to assure, that the instrument is always set the same way when measuring the same type of materials. Click Here To Continue. Inc. All rights reserved. All other manufacturers' trademarks acknowledged.