Neutral Density Filter for Trial Lens Frame

Neutral Density Filter for Trial Lens Frame.

Coating: Uncoated
Diameter (mm): 25.00
Glass/Filter Number: Hoya ND0.3
Substrate: ND Filter Glass
Optical Density OD: 2.0 ±0.3
Index of Refraction nd: 1.51
Surface Quality: 60-40
Transformation Temperature (°C): 490
Thickness (mm): 2.00
Thickness Tolerance (mm): ±0.5
Transmission (%): 1.00
Transmission Tolerance (%): ±0.1
Type: Neutral Density Filter
Blocking Wavelength Range (nm): 400-700
Dimensional Tolerance (mm): ±0.1
Parallelism (mm): ≤2
Manufacturer: EO