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Long Pass Filters and Short Pass Filters Specifications

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Learn more about Long Pass Filters and Short Pass Filters

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Filter Type




           
   Your choices are...
 
      
 
   Long Pass Filters
 
     Long pass filters transmit a wide spectral band of long wavelength radiation while blocking short wavelength radiation.
 
   Short Pass Filters
 
     Short pass filters transmit a wide spectral band of short wavelength radiation and block long wave radiation.
 
   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.
Filter Geometry




   Filter Shape:      Filters can either come round, square, or rectangular.
   Your choices are...
 
      
 
   Circular
 
     The window is circular shaped.
 
   Square
 
     The window is square shaped.
 
   Rectangular
 
     The window is rectangular shaped.
 
   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.
Cut-on / Cut-off Wavelength




   Cut-on / Cut-off Wavelength:
 
     The Cut-on wavelength is where the Long Pass filter stops reflecting and starts transmitting. The Cut-off wavelength is where the Short Pass filter stops transmitting and starts reflecting.
 
   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.
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.
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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