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Filter Type:

Application Specific:

Filter Shape:

Diameter, Square Side, or Rectangular Length:

Rectangular Width:

Thickness:

Transmission Range:

Allow up to: overrange/margin
Use the overrange/margin to restrict your search to items whose full-scale range is close to your requirements.
(Overrange/margin requires both 'From' and 'To' values to work.)

Rejection Range:

Allow up to: overrange/margin
Use the overrange/margin to restrict your search to items whose full-scale range is close to your requirements.
(Overrange/margin requires both 'From' and 'To' values to work.)

Filter Surface Quality:

Help with Optical Filters specifications:

Filter Type
           
   Your choices are...         
   Bandpass / Interference Filters       Optical bandpass filters are designed to transmit a specific waveband. They are composed of many thin layers of dielectric materials that have differing refractive indices to produce constructive and destructive interference in the transmitted light.  
   Circular Variable Filters       Circular Variable Filters Circular variable filters provide linear attenuation of incident light by rotating the filter. 
   Cold Mirrors       Cold mirrors are heat transmitting mirrors / filters designed to reflect visible wavelengths while transmitting near-infrared wavelengths. 
   Color Filters       Color filters include a wide range of filter types that are distinguished by their specific color spectrums and wavelengths, as well as their Schott glass compositions. 
   Dichroic Filters       Dichroic filters are accurate color filters used to pass select wavelengths of light while reflecting all other colors and wavelengths. Dichroic mirrors are used to reflect desired colors or wavelengths. 
   Hot Mirrors       Hot mirrors are heat reflecting mirrors / filters designed to transmit visible wavelengths while reflecting near-infrared heat generating wavelengths. 
   Long Pass Filters       Long pass filters transmit a wide spectral band of long wavelength radiation while blocking short wavelength radiation. 
   Neutral Density Filters       Neutral density filters are designed to reduce transmission evenly across a portion of the spectrum. They are slightly sensitive to angles, but are much more forgiving than interference filters. 
   Short Pass Filters       Short pass filters transmit a wide spectral band of short wavelength radiation and block long wave radiation. 
   Spectral Filters       Spectral filters are used to selectively transmit light according to its wavelength. They are not to be mistaken with color filters, which can be differentiated by an associated Schott glass number. 
   Other       Other unlisted, specialty or proprietary filter type. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Application Specific
          Filter Application refers to the desired wavelength range for the lens. This wavelength range is mostly dependent upon the filter material.
   Your choices are...         
   Infrared (IR)       IR filters are designed for use in the 750 nm to 2500 nm wavelength range. 
   Visible (VIS)       VIS filters are designed for use in the 380 nm to 750 nm wavelength range. 
   Ultra-Violet (UV)       UV filters are designed for use in the 4 nm to 380 nm wavelength range. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Filter Geometry
   Filter Shape:      Filters can either come round, square, or rectangular.
   Your choices are...         
   Circular       The filter is circular. 
   Square       The filter is square-shaped. 
   Rectangular       The filter is rectangle-shaped. 
   Other       Other unlisted, specialty or proprietary filter shape. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Diameter, Square Side, or Rectangular Length:       If the filter is circular, the diameter. If the filter is square, the length of a side. If the filter is rectangular, the length of its largest side. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Rectangular Width:       If the filter is rectangular, the length of its shorter side. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Thickness:       The thickness of the filter. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
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Wavelength Range
   Transmission Range:       The area of the spectrum where the filter transmits. 
   Search Logic:      User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
   Rejection Range:       The area of the spectrum where the filter does not transmit. 
   Search Logic:      User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
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Filter Surface Quality
          Surface quality of the filter glass.
   Your choices are...         
   10-5 Scratch / Dig       A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 10 / 5 indicates the average diameter of the digs to be .05 mm and the average length of a scratch is .10 mm. 
   20-10 Scratch / Dig       A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 20 / 10 indicates the average diameter of the digs to be .10 mm and the average length of a scratch is .20 mm. 
   40-20 Scratch / Dig       A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 40 / 20 indicates the average diameter of the digs to be .20 mm and the average length of a scratch is .40 mm. 
   60-40 Scratch / Dig       A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 60 / 40 indicates the average diameter of the digs to be .40 mm and the average length of a scratch is .60 mm. 
   80-50 Scratch / Dig       A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 80 / 50 indicates the average diameter of the digs to be .50 mm and the average length of a scratch is .80 mm. 
   Other       Any other Scratch / Dig surface quality rating. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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