Variable Groove Depth (VGD) Master Gratings

Grating Info

Blank Size
(mm)

 

Useful Area
(mm)

 

Grooves Density
(l/mm)

 

Nominal Depth Variation Over 25 mm

h Min (nm)

h Centre (nm)

h Max (nm)

40x100x30

35x90

1800

4.5

10

15.5

40x100x30

35x90

600

18

35

52

40x100x30

35x90

300

42.5

80

117.5