A neutral density filter (ND filter) is a light filter that decreases the intensity of light without altering the relative spectral distribution of the energy. An ND filter is used to filter the entire visible spectrum evenly, allowing light reduction, without influencing color or contrast. (read more)

Reflective Neutral Density Filters for the UV and Visible Spectrum from Optarius (read more)

FN 256 filters are designed specifically for applications involving asymmetric loads, ranging from industrial controls to medical electronics systems. (read more)

Tempotec fabricate many kind of golored glass filter such as cut off type filter, selective absorptioin type filter or neutral density type filter. We have fabricate experience in many colored glass materials like JB490, RG600, RG640, RG830, BG39, etc. Mass productioin of colored glass filter is available in Tempotec. We can output more than 50Kpcs per month. (read more)

The Filter Wheel system delivers smooth, high speed operation and changes filters in as little as 120ms. The system accepts ten 25mm or eight 32mm diameter filters. The filter wheel can be fitted to the excitation and emission ports of your microscope and up to 2 filter wheels and 3 shutters can be operated from 1 controller via a serial port or an optional filter wheel keypad. (read more)

New designs utilizing high speed high performance microprocessors, higher levels of integration and more complex functions demand more stringent rules in design and circuit layout to overcome problems as they relate to EMI/RFI. (read more)

Spectrum Control, Inc. now offers their full line of standard and custom EMI filter plates in completely non-magnetic versions. These new non-magnetic components are perfectly suited for medical applications where electronic devices must be placed in the same vicinity as MRI equipment, or in any situation where non-magnetic parts are specified. (read more)

AERO Cell filters have been engineered to provide medium to high efficiency filtration combined with prolonged life cycles. By nature of its completely rigid design, the AERO Cell eliminates the need for retainers and special external wire media supports.

UL Class 1 and 2. Average efficiency range 50-95% (read more)

Spectrum Control's complete line of standard and custom filter plates can now be ordered to meet RoHS compliance standards for EMI filtered signal lines. Spectrum Control has redesigned all of its components to meet the stricter requirements of the European Community Directive 2002/95/EC that restricts the use of certain hazardous substances in electrical and electronic equipment. (read more)

A 3-phase, low zero sequence impedance autotransformer, which when connected near to and in parallel with the harmonic generating non-linear loads (usually connected at the distribution panel), provides an alternate path for 3rd, 9th, & 15th current harmonics (triplens) which the loads create. Patented Field Adjustable Impedance (FAI) feature allows for adjustment of NCE™ zero sequenc... (read more)