Absorptive Neutral Density (ND) Filter
Different from reflective filters, absorptive neutral density filters use various neutral density optical glasses to offer a range of densities by controlling  materials and thickness .These filters have low surface reflection and flat spectral response in the visible range. They can be widely used in spectral measurement, imaging optical systems, machine vision systems and optical output attenuation of low power lasers
Absorptive Neutral Density (ND) Filter
Material Neutral grey glass
Transmitted Wavefront error λ/ 4 @ 633 nm
Parallelism <1 arcmin
Surface Quality 60-40
Dimensional Tolerance +0.0/-0.2mm
Thickness Tolerance ±0.5mm
Applied Wavelength Range 400~700nm
*Optical Density Tolerance ±5% @633nm
CA >90%
* Optical Density(OD) OD= -log(T/100) T
Pro No.
Parameter
Dia
OD
Design Wavelength
Material
Delivery time
Compare
Price
Purchase
Φ12.5mm
0.1
-
Neutral grey glass
In stock
$12.50
Φ12.5mm
0.15
-
Neutral grey glass
In stock
$12.50
Φ12.5mm
0.2
-
Neutral grey glass
In stock
$12.50
Φ12.5mm
0.3
-
Neutral grey glass
In stock
$12.50
Φ12.5mm
0.4
-
Neutral grey glass
In stock
$12.50
Φ12.5mm
0.5
-
Neutral grey glass
In stock
$12.50
Φ12.5mm
0.6
-
Neutral grey glass
In stock
$12.50
Φ12.5mm
0.7
-
Neutral grey glass
In stock
$12.50
Φ12.5mm
0.9
-
Neutral grey glass
In stock
$12.50
Φ12.5mm
1
-
Neutral grey glass
In stock
$12.50
Φ12.5mm
1.3
-
Neutral grey glass
In stock
$12.50
Φ12.5mm
2
-
Neutral grey glass
In stock
$12.50
Φ12.5mm
3
-
Neutral grey glass
In stock
$12.50
Φ12.5mm
4
-
Neutral grey glass
In stock
$12.50
Φ25mm
0.1
-
Neutral grey glass
In stock
$22.50
Φ25mm
0.15
-
Neutral grey glass
In stock
$22.50
Φ25mm
0.2
-
Neutral grey glass
In stock
$22.50
Φ25mm
0.3
-
Neutral grey glass
In stock
$22.50
Φ25mm
0.4
-
Neutral grey glass
In stock
$22.50
Φ25mm
0.5
-
Neutral grey glass
In stock
$22.50

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