Variable Density Filter
Size: ..........................................................φ50 x 2mm (ID:φ7.5)
Tolerance: OD:.........................................................+0/-0.25mm
ID: .........................................................+0.25/-0mm
Thk: ...........................................................±0.25mm
Coating Radial Angle: ..........................................................±1º
Spectral Range: .......................................................380-1200nm
Coating: ...........................................................ND at Front Face
Flatness: ..............................................................λ/2@632.8nm
S/D: ................................................................................60-40
Wedge: .....................................................................<3 arc min.
Optical Density Tolerance:..........................±5% (At Both Extremes)
Linearity of Density: ..........................................................±5%
Chamfer: .................................................................0.2 x 0.2mm
Gradient Direction: .............................................Counterclockwise
