Optical filters are passive devices that allow the transmission of a specific wavelength or set of wavelengths of light. There are two classes of optical filters that have different mechanisms of operation: absorptive filters and dichroic filters. we offers -Bandpass Filters -Longpass Filters -Shortpass Filters -collection of neutral density filters (nd filter) including standard and variable -Netral Density Filters -Color and Absorptive Optical Filters -Dichroic Filters -Fluorescence Optical Filters -collection of optical diffusers for even distribution of light Diffusers -colored glass optical filter set -Optical Filter Sets -Custom Filter