Description
These are Neutral Density Filters (Absorptive type). They are made of absorptive glass and feature 80/50 scratch/dig quality.
Please contact us for details and ordering info.
Neutral Density Filter-Absorptive
Specifications
| Attenuator Type: | Absorptive |
|---|---|
| Shape: | Round, Square, Custom |
| Size: | 25.4 mm |
| Optical Density: | 0.1 |
| Design Wavelength: | 400 - 700 nm |
| Surface Quality: | 80/50 scratch and dig |
| Clear Aperture: | > 90 % |
| Flatness: | < 2λ @632.8nm |
| Parallelism: | < 5 arc minutes |
Download Data Sheet
Features
- Material Absorptive Glass
- Dimension Tolerance +0.0/-0.2mm
- Thickness Tolerance ±0.2mm
- Flatness 2λ @632.8nm
- Surface Quality 80/50 scratch and dig
- Parallelism Clear Aperture >90%
- Design Wavelength 400-700nm
- OD Tolerance ±10% of OD
Frequently Asked Questions
What are Neutral Density Filters?
Neutral Density Filters are optical filters that reduce the intensity of light without affecting its color or wavelength.
What are Absorptive type Neutral Density Filters made of?
Absorptive type Neutral Density Filters are made of absorptive glass.
What is the design wavelength of the Neutral Density Filters?
The design wavelength of the Neutral Density Filters is 400-700nm.
What is the OD tolerance of the Neutral Density Filters?
The OD tolerance of the Neutral Density Filters is ±10% of OD.
What is the scratch/dig quality of the Neutral Density Filters?
The Neutral Density Filters have 80/50 scratch/dig quality.
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