Neutral Density Filters

Reduction of the laser power before reaching the camera is often times required to obtain a usable signal, one that is not saturating or damaging the camera. These filters work much like sunglasses do, by absorbing the laser light and reducing the laser power often times by several orders of magnitude when used in series.

  • C-Mount Neutral Density Filters

    Neutral Density Filters
    The individual filters come in three versions, the ND1 filter in the red housing with ~10% transmission in the visible, the ND2 filter in the black housing with ~1% transmission and the ND3 filter in the green housing with ~0.1% transmission. The individual filters can be screwed on top of each other and thus stacked. They are set at a small wedge angle in the housing so as not to cause interference effects.
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  • LBF-50 Neutral Density Filter Set

    LBF-50 Neutral Density Filter Set
    The LBF-50 comes with a set of filters that are inserted into the flange shown, mounted on top of each other and secured. A set of 6 filters is provided that can achieve attenuation anywhere from ND 0.3 to ND 8. The LBF-50 is especially useful for CS or C mount cameras with the CCD recessed way below the surface. The filters are recessed into the camera thus saving thickness as shown in the illustration to the right.
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  • ATP-K Variable Attenuator

    ATP-K Continuously Variable Attenuator
    Attenuates your laser without ghost reflections or fringes. Knob-operated variable wedge attenuator of ND 1.7–4.6. Fixed grayglass attenuator with ND 2.8
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  • UV ND Filters Fixed Attenuator Set

    UV ND Filters Fixed Attenuator Set
    C-mount interface for universal application to our CCD and Pyroelectric cameras 190-380nm attenuation covers Excimer, Helium Cadmium, and the Nd:YAG UV harmonic laser wavelengths. Attenuation with these ND filters permits the best use of the dynamic range of a beam profiling camera. Attenuation range of 0.3 to 6.0 optical densities (ND). Set consists of three slides with two filters in each slide.
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  • 355nm Specialty Filter

    355nm Specialty Filter
    There are also specialized filters available to eliminate extraneous wavelengths when measuring very short or very long wavelengths where the CCD cameras are not sensitive and the desired signal can get swamped by extraneous light of other wavelengths.
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  • 1300nm Specialty Filter

    1300nm Specialty Filter
    There are also specialized filters available to eliminate extraneous wavelengths when measuring very short or very long wavelengths where the CCD cameras are not sensitive and the desired signal can get swamped by extraneous light of other wavelengths.
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