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Gentec-EO ND4.0 Filter

Updated:2025-03-20

Brand: Gentec-EO
Model: ND4.0
Description: Gentec-EO ND 4.0 filter in SM1-threaded stackable holder.
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Product Details

Gentec-EO ND4.0 Filter Description：

Datasheet(CN) Datasheet(EN) User's Manual

Gentec-EO ND 4.0 filter in SM1-threaded stackable holder.

Key features

MANAGE THE LASER POWER

CMOS sensors have low saturation levels as well as low damage thresholds. It is thus very important that you control your laser power to get the best measurement possible and avoid damaging the BEAMAGE camera.

Stack and attenuate as much as you need

These filters reduce the intensity of all wavelengths without affecting the wavefront of the beam or distorting the image. Many filters can be stacked directly on each other.

Specifications

Measurement capabilities
Spectral range	400 - 1595 nm
Transmittance	~0.01%
Equivalent attenuation	1/10,000
Parallelism	< 3 arcmin
Optical density tolerance	± 5%
Transmitted wavefront error	< λ/10 @ 633 nm
Surface quality	40-20 Scratch-Dig
Damage thresholds
Maximum average power density	100 W/cm²
Maximum energy density	3 J/cm²
Maximum power	1 W
Physical characteristics
Aperture diameter	22.5 mm
Dimensions	30.5Ø x 11.4D mm
Weight	0.04 kg
Mounting thread	SM1
Clear aperture	90% of area
Dimensional tolerance	+0.0/-0.25 mm
Substrate	NG9