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Technical Data

Optical Flatness

 

 

 

Optical Flatness

Optical Flatness Comparison Chart
Fringe
Waves
Microns
Angstroms
Microinches
Inches
Parallelism
Seconds
1/10
1/20
.025
250

1

.000001
0.2
1/5
1/10
.050
500
2
.000002
0.4
2/5
1/5
.100
1,000
4
.000004
0.8
1/2
1/4
.125
1,250
5
.000005
1.0
1
1/2
.250
2,500
10
.000010
2.0
2
1
.500
5,000
20
.000020
4.0
3
1 1/2
.750
7,500
30
.000030
6.0
4
2
1.000
10,000
40
.000040
8.0
8
4
2.000
20,000
80
.000080
16.0
10
5
2.500
25,000
100
.000100
20.0
100
50
25.000
250,000
1,000
.001000
200.0


 


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