Neutral density (by absorption) filters
Main features
- Optical density selection from 0,1 to 4
- ⌀25,4 mm standard diameter
- Excellent for low-power applications
- Custom dimensions, optical densities are available upon request
Application examples
- Overexposure prevention for cameras and other detectors
Request custom
View stock
- Description
- Standard specifications
Neutral density (by absorption) filters are designed to feature even and flat transmission over particular wavelength range and defined by optical density (OD). Overall optical attenuation is a sum of optical absorption in neutral density optical glass and Fresnel reflection losses. Neutral density optical filters densities adds up, if used in series.
Neutral density (by absorption) filters | |
---|---|
Material | Neutral density optical glass |
Design wavelength | 450-650 nm |
Optical density tolerance | ±5% |
Clear aperture | >85% |
Face dimensions tolerance | +0/-0,2 mm |
Parallelism error | <3 arcmin |
Protective chamfers | <0,35 mm at 45° |
Surface quality | 60-40 S-D |
Surface flatness | <1λ@632,8 nm |
Coatings | Uncoated, available upon request |
Order your item
Face dimensions
Optical density
Design wavelength
SKU
PRICE
QUANTITY
⌀25,4 mm
0,1
450-650 nm
6498
21 €
⌀25,4 mm
0,2
450-650 nm
6499
21 €
⌀25,4 mm
0,3
450-650 nm
6500
21 €
⌀25,4 mm
0,4
450-650 nm
6501
21 €
⌀25,4 mm
0,5
450-650 nm
6502
21 €
⌀25,4 mm
1
450-650 nm
6503
21 €
⌀25,4 mm
1,5
450-650 nm
6504
21 €
⌀25,4 mm
2
450-650 nm
6505
21 €
⌀25,4 mm
3
450-650 nm
6506
21 €
⌀25,4 mm
4
450-650 nm
6507
21 €
1
/1
Show all