Linear Apodizing Filters
Description
Linear Apodizing optical filters are customizable density gradient filters that have constant density in one direction and variable neutral density (ND) filter in the other direction. These linear apodizing optical filters are used to eliminate undesirable intensity variations in optical systems.
There are two basic types of linear apodizing optical filters:
1) Dark in center: The Linear apodizing filter function decreases in density linearly from a dark center, where light is usually at its peak intensity, to the outside edge, where it can become completely transparent.
2) Clear in center: The Linear apodizing filter function increases in density linearly from a clear or light center to a darker outside edge.
ISO 9001:2015 certified and ITAR registered.
Custom prototypes to volume production are available.
Linear Apodizing Filters
Specifications |
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|---|---|
| Attenuator Type: | Other |
| Shape: | Round, Square, Custom |
| Size: | 25 - 125 mm |
| Optical Density: | 1-5, Specify |
| Substrate Materials:: | N-BK7 or equivalent |
| Optical Density Range:: | Specify: 0.04 to 1, 2, or 3 (typical) |
| Clear Aperture:: | 90% without AR Coating |
| TWE:: | < 2 Waves per 25mm |
| Wavelength Calibration:: | 632.8nm |
| Wavelength Range:: | 375nm - 2000nm |
| Dimensions:: | 25mm - 125mm and custom sizes |
| Surface Quality:: | 80-50 Scratch & Dig |
| Parallelism:: | < 3 Arc Minutes |
Features
- Density gradients can be customized to suit any application (transmission functions also available).
- Transmittance & optical density are continuously varying.
- Can be applied to different substrate types.
- Used in broadband applications.
- A wide range of materials can be used to tune the reflection and absorption.
- The coating can be applied to substrate size from a few millimeters to over 6”.
- Environmentally durable.
- Prototype to production volumes.
Applications
- Entertainment: to make light distribution uneven for cosmetic applications.
- Imaging: to break up diffraction patterns by the introduction of soft edges.
- Industrial: to eliminate detector saturation that occurs in automatic welding machines.
- Military: to eliminate IR detector saturation in ground-to-air and air-to-air missiles.
- Photography: to create soft edges in photos & reduce over exposed areas.
- Scientific: used as a variable phase plate when the gradient coating material has the same index of refraction as the substrate.
- Semiconductor: used in exposing systems to obtain perfect illumination distribution.
For pricing, technical or any other questions please contact the supplier
- No registration required
- No markups, no fees
- Direct contact with supplier
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How to order?
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Ships from:
United States
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On FindLight:
since 2015