LOT-QuantumDesign

Absorptive neutral density filters

With their ability to minimize back-reflections and scattered light, absorptive neutral density (ND) filters are ideal for calibration. In contrast to the metallic type, absorption-type filters achieve their optical density by absorbing light within the substrate. For this reason, thickness is a key determinant of opacity. Because of their absorbing quality, these filters are suitable for low-power applications only.

Features
  • Sets provide a uniform series of filters for adjusting illumination
  • Custom substrate materials and dimensions available

Specification

General Specifications
Thickness5.0 mm (maximum)
Dimensional Tolerance±0.5 mm
Clear Aperature90% of outside dimension
Surface Quality60/40 per MIL-0-13830B
Max. Operating Temperature+100 °C
Substrate MaterialSchott absorption glass
Spectral Range

400-700 nm

Optical QualityFlatness of λ/4 per inch and parallelism of 30 arc seconds or better
MechanicalUnmounted
OptionalMounted in threaded ring - ask our expert on the right for thread sizes
Optical DensityNominal Transmission (%)Transmission @ 550 nm (%)Thickness (mm)Part Number
0.10
0.20
0.30
79.5
63.0
50.0
±20.00
±10.00
±10.00
4.50
1.67
2.84
010ABND
020ABND
030ABND
0.40
0.50
0.60
39.8
31.6
25.0

±10.00
±10.00
±10.00

3.78
2.11
2.54
040ABND
050ABND
060ABND
0.70
0.80
0.90
20.0
15.8
12.6
±10.00
±10.00
±10.00
2.95
3.38
1.75
070ABND
080ABND
090ABND
1.00
1.50
2.00
10.0
3.2
1.0
±10.00
±10.00
±10.00
1.96
2.90
2.06
100ABND
150ABND
200ABND
3.00
4.00
0.10
0.01
±10.00
±10.00
2.92
2.82
300ABND
400ABND

 Available as 25 mm Ø and 50 mm SQ

Applications

Photomicrography
Machine Vision
Photography
Scientific Measurements and Research

Contact

Ing. Fabrizio Renzi
Ing. Fabrizio Renzi

Contact

Quantum Design s.r.l.

Via Francesco Sapori, 27
00143 Roma
Italy

Phone:+39 06 5004204
Fax:+39 06 5010389
E-mail:italy@qd-europe.com
Fabrizio RenziProduct Manager
+39 06 5004204
renzi@qd-europe.com