Dear friends, sir, mam

i have fabricated graded filters on glass substrate with 180*150 mm. in different title angle positions.

i measured the reflection of each filter. i observed that with increase in angle the roughness is decreasing in x direction , but in y direction the roughness is decreases in extreme right but not in extreme left direction.

is there any relation that the roughness will be correlated to the intensity of the filter?

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