Absorption type neutral density filter
PRODUCT CATEGORIES
- Neutral density filters (ND filters) are commonly used in imaging or laser applications to avoid damage to camera sensors or other optical components caused by strong light.
- The ND filter will absorb or reflect the part of the light that is not transmitted, so as to uniformly reduce the transmittance in the spectrum of a certain part.
Technical parameters
| Items | Parameters |
|---|---|
| Material | Neutral grey glass |
| Surface quality | 40/20-60/40 |
| Effective aperture | 90% |
| Parallel error | ＜1′ |
| Diameter error | +0.0/-0.1mm |
| Application wavelength range | 400-700nm |
| Transmitted wavefront error | λ/4@633nm |
| Optical density error | ±5%@633nm |
| Optical density (OD) | 0.1- 3 |
spectral curve
In addition, We can customize the optical filters according to customer requirements or drawings.
For details, please consult:
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