Polarizer Defects - NEC MultiSync 20WGX2 Series Service Manual

7.2 Polarizer Defects

Scratches
Dent
Where, W :Width
L : Length
D : Average diameter =(a+b)/2
Note)
a. Average Diameter
b. Linear : a >2b ,
c. Extraneous substances which can be wiped out, like Finger Print, Particles are not considered as a
defect.
d. Defects which is on the Black Matrix(outside of Active Area) are not considered as a defect.
Items
Linear
Circular
b
Circular : a ≦ 2b
Criteria
0.1≦W≦0.2 , 0.3≦W≦2.0 , N≦3
D≦0.5 , N≦3
D= a+b
2
a
5-18