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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

Dichroic Longpass Filters

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  • Ideal for Fluorescence or Multispectral Imaging
  • Sharp Cut-On Wavelength
  • Broad Transmission and Reflection Ranges

Our TECHSPEC® Dichroic Longpass Filters are designed for a 45° angle of incidence. The rejected light is reflected at 90°, making these filters ideal for use in fluorescence applications or as spectral beamsplitters. These hard coated filters feature low polarization dependence, broad spectral ranges, and a precision fused silica substrate. Reflection and transmission curves are available to easily integrate TECHSPEC® Dichroic Longpass Filters into any application.

Common Specifications

Thickness (mm):
1.05
Thickness Tolerance (mm):
±0.1
Dimensional Tolerance (mm):
+0.0/-0.2
Physical Durability:
Adhesion per MIL-PRF-13830B, Section C.4.5.12
Moderate abrasion per MIL-PRF-13830B, Section C.4.5.11
Cleaning per MIL-C-48497A Section 4.5.4.2
Angle of Incidence (°):
45
Substrate:
Fused Silica (Corning 7980)
Coating:
Hard Coated
Reflection (%):
>97, Average Polarization
>95, Absolute Polarization
Surface Quality:
60-40
Transmission (%):
>85, Average Polarization
>80, Absolute Polarization
Transmitted Wavefront Tolerance:
λ/4
Cut-On Tolerance (%):
±2
Slope Factor (%):
3.00
Environmental Durability:
Humidity per MIL-STD-810H, Section 507.6
Temperature per MIL-STD-810H, Section 501.7 and 502.7

Products

 Dimensions (mm)  Dia. (mm)  Cut-On Wavelength (nm)   Thickness (mm)   Reflection Wavelength (nm)   Transmission Wavelength (nm)   Compare   Stock Number   Price  Buy
- 12.50 400.00 1.05 350 - 375 420 - 1600 #69-864 £110.50 Qty 6+ £87.55   Request Quote  
  • 3-4 days
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12.5 x 17.6 - 400.00 1.05 350 - 375 420 - 1600 #69-875 £110.50 Qty 6+ £87.55   Request Quote  
  • 3-4 days
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- 25.00 400.00 1.05 350 - 375 420 - 1600 #69-886 £147.90 Qty 6+ £119.00   Request Quote  
  • 3-4 days
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25.2 x 35.6 - 400.00 1.05 350 - 375 420 - 1600 #69-897 £147.90 Qty 6+ £119.00   Request Quote  
  • In Stock
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- 12.50 450.00 1.05 350 - 430 470 - 1600 #69-865 £110.50 Qty 6+ £87.55   Request Quote  
  • 3-4 days
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12.5 x 17.6 - 450.00 1.05 350 - 430 470 - 1600 #69-876 £110.50 Qty 6+ £87.55   Request Quote  
  • In Stock
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- 25.00 450.00 1.05 350 - 430 470 - 1600 #69-887 £147.90 Qty 6+ £119.00   Request Quote  
  • In Stock
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25.2 x 35.6 - 450.00 1.05 350 - 430 470 - 1600 #69-898 £147.90 Qty 6+ £119.00   Request Quote  
  • In Stock
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- 12.50 500.00 1.05 350 - 480 520 - 1600 #69-866 £110.50 Qty 6+ £87.55   Request Quote  
  • In Stock
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12.5 x 17.6 - 500.00 1.05 350 - 480 520 - 1600 #69-877 £110.50 Qty 6+ £87.55   Request Quote  
  • In Stock
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- 25.00 500.00 1.05 350 - 480 520 - 1600 #69-888 £147.90 Qty 6+ £119.00   Request Quote  
  • 3-4 days
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25.2 x 35.6 - 500.00 1.05 350 - 480 520 - 1600 #69-899 £147.90 Qty 6+ £119.00   Request Quote  
  • 3-4 days
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- 12.50 550.00 1.05 415 - 515 575 - 1600 #69-867 £110.50 Qty 6+ £87.55   Request Quote  
  • Contact Us
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12.5 x 17.6 - 550.00 1.05 415 - 515 575 - 1600 #69-878 £110.50 Qty 6+ £87.55   Request Quote  
  • In Stock
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- 25.00 550.00 1.05 415 - 515 575 - 1600 #69-889 £147.90 Qty 6+ £119.00   Request Quote  
  • In Stock
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25.2 x 35.6 - 550.00 1.05 415 - 515 575 - 1600 #69-900 £147.90 Qty 6+ £119.00   Request Quote  
  • In Stock
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- 12.50 600.00 1.05 460 - 570 625 - 1600 #69-868 £110.50 Qty 6+ £87.55   Request Quote  
  • In Stock
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12.5 x 17.6 - 600.00 1.05 460 - 570 625 - 1600 #69-879 £110.50 Qty 6+ £87.55   Request Quote  
  • 3-4 days
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- 25.00 600.00 1.05 460 - 570 625 - 1600 #69-890 £147.90 Qty 6+ £119.00   Request Quote  
  • 3-4 days
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25.2 x 35.6 - 600.00 1.05 460 - 570 625 - 1600 #69-901 £147.90 Qty 6+ £119.00   Request Quote  
  • 3-4 days
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- 12.50 650.00 1.05 495 - 610 675 - 1600 #69-869 £110.50 Qty 6+ £87.55   Request Quote  
  • 3-4 days
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12.5 x 17.6 - 650.00 1.05 495 - 610 675 - 1600 #69-880 £110.50 Qty 6+ £87.55   Request Quote  
  • 3-4 days
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- 25.00 650.00 1.05 495 - 610 675 - 1600 #69-891 £147.90 Qty 6+ £119.00   Request Quote  
  • 3-4 days
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25.2 x 35.6 - 650.00 1.05 495 - 610 675 - 1600 #69-902 £147.90 Qty 6+ £119.00   Request Quote  
  • 3-4 days
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- 12.50 700.00 1.05 535 - 660 725 - 1600 #69-870 £110.50 Qty 6+ £87.55   Request Quote  
  • 3-4 days
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12.5 x 17.6 - 700.00 1.05 535 - 660 725 - 1600 #69-881 £110.50 Qty 6+ £87.55   Request Quote  
  • 3-4 days
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- 25.00 700.00 1.05 535 - 660 725 - 1600 #69-892 £147.90 Qty 6+ £119.00   Request Quote  
  • 3-4 days
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25.2 x 35.6 - 700.00 1.05 535 - 660 725 - 1600 #69-903 £147.90 Qty 6+ £119.00   Request Quote  
  • 3-4 days
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- 12.50 750.00 1.05 565 - 715 780 - 1600 #69-871 £112.20 Qty 6+ £89.25   Request Quote  
  • 3-4 days
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12.5 x 17.6 - 750.00 1.05 565 - 715 780 - 1600 #69-882 £112.20 Qty 6+ £89.25   Request Quote  
  • 3-4 days
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- 25.00 750.00 1.05 565 - 715 780 - 1600 #69-893 £153.00 Qty 6+ £122.40   Request Quote  
  • In Stock
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25.2 x 35.6 - 750.00 1.05 565 - 715 780 - 1600 #69-904 £153.00 Qty 6+ £122.40   Request Quote  
  • 3-4 days
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- 12.50 800.00 1.05 600 - 760 830 - 1600 #69-872 £112.20 Qty 6+ £89.25   Request Quote  
  • In Stock
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12.5 x 17.6 - 800.00 1.05 600 - 760 830 - 1600 #69-883 £112.20 Qty 6+ £89.25   Request Quote  
  • Contact Us
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- 25.00 800.00 1.05 600 - 760 830 - 1600 #69-894 £153.00 Qty 6+ £122.40   Request Quote  
  • 3-4 days
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25.2 x 35.6 - 800.00 1.05 600 - 760 830 - 1600 #69-905 £153.00 Qty 6+ £122.40   Request Quote  
  • 3-4 days
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- 12.50 850.00 1.05 635 - 805 880 - 1600 #69-873 £112.20 Qty 6+ £89.25   Request Quote  
  • 3-4 days
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12.5 x 17.6 - 850.00 1.05 635 - 805 880 - 1600 #69-884 £112.20 Qty 6+ £89.25   Request Quote  
  • 3-4 days
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- 25.00 850.00 1.05 635 - 805 880 - 1600 #69-895 £153.00 Qty 6+ £122.40   Request Quote  
  • 3-4 days
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25.2 x 35.6 - 850.00 1.05 635 - 805 880 - 1600 #69-906 £153.00 Qty 6+ £122.40   Request Quote  
  • In Stock
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- 12.50 900.00 1.05 675 - 855 935 - 1600 #69-874 £112.20 Qty 6+ £89.25   Request Quote  
  • In Stock
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12.5 x 17.6 - 900.00 1.05 675 - 855 935 - 1600 #69-885 £112.20 Qty 6+ £89.25   Request Quote  
  • 3-4 days
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- 25.00 900.00 1.05 675 - 855 935 - 1600 #69-896 £153.00 Qty 6+ £122.40   Request Quote  
  • 3-4 days
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25.2 x 35.6 - 900.00 1.05 675 - 855 935 - 1600 #69-907 £153.00 Qty 6+ £122.40   Request Quote  
  • 3-4 days
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- 12.50 950.00 1.05 715 - 900 985 - 1600 #87-027 £112.20 Qty 6+ £89.25   Request Quote  
  • 3-4 days
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12.5 x 17.6 - 950.00 1.05 715 - 900 985 - 1600 #87-033 £112.20 Qty 6+ £89.25   Request Quote  
  • 3-4 days
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- 25.00 950.00 1.05 715 - 900 985 - 1600 #87-039 £153.00 Qty 6+ £122.40   Request Quote  
  • 3-4 days
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25.2 x 35.6 - 950.00 1.05 715 - 900 985 - 1600 #87-045 £153.00 Qty 6+ £122.40   Request Quote  
  • 3-4 days
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- 12.50 1,000.00 1.05 750 - 950 1035 - 1600 #87-028 £115.60 Qty 6+ £91.80   Request Quote  
  • In Stock
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12.5 x 17.6 - 1,000.00 1.05 750 - 950 1035 - 1600 #87-034 £115.60 Qty 6+ £91.80   Request Quote  
  • 3-4 days
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- 25.00 1,000.00 1.05 750 - 950 1035 - 1600 #87-040 £157.25 Qty 6+ £125.80   Request Quote  
  • 3-4 days
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25.2 x 35.6 - 1,000.00 1.05 750 - 950 1035 - 1600 #87-046 £157.25 Qty 6+ £125.80   Request Quote  
  • 3-4 days
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- 12.50 1,050.00 1.05 790 - 1000 1085 - 1600 #87-029 £115.60 Qty 6+ £91.80   Request Quote  
  • 3-4 days
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12.5 x 17.6 - 1,050.00 1.05 790 - 1000 1085 - 1600 #87-035 £112.20 Qty 6+ £89.25   Request Quote  
  • 3-4 days
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- 25.00 1,050.00 1.05 790 - 1000 1085 - 1600 #87-041 £157.25 Qty 6+ £125.80   Request Quote  
  • 3-4 days
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25.2 x 35.6 - 1,050.00 1.05 790 - 1000 1085 - 1600 #87-047 £157.25 Qty 6+ £125.80   Request Quote  
  • 3-4 days
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- 12.50 1,100.00 1.05 825 - 1045 1135 - 1600 #87-030 £115.60 Qty 6+ £91.80   Request Quote  
  • 3-4 days
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12.5 x 17.6 - 1,100.00 1.05 825 - 1045 1135 - 1600 #87-036 £115.60 Qty 6+ £91.80   Request Quote  
  • 3-4 days
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- 25.00 1,100.00 1.05 825 - 1045 1135 - 1600 #87-042 £157.25 Qty 6+ £125.80   Request Quote  
  • 3-4 days
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25.2 x 35.6 - 1,100.00 1.05 825 - 1045 1135 - 1600 #87-048 £157.25 Qty 6+ £125.80   Request Quote  
  • 3-4 days
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- 12.50 1,150.00 1.05 875 - 1095 1190 - 1600 #87-031 £115.60 Qty 6+ £91.80   Request Quote  
  • 3-4 days
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12.5 x 17.6 - 1,150.00 1.05 875-1095 1190 - 1600 #87-037 £115.60 Qty 6+ £91.80   Request Quote  
  • 3-4 days
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- 25.00 1,150.00 1.05 875 - 1095 1190 - 1600 #87-043 £157.25 Qty 6+ £125.80   Request Quote  
  • 3-4 days
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25.2 x 35.6 - 1,150.00 1.05 875 - 1095 1190 - 1600 #87-049 £157.25 Qty 6+ £125.80   Request Quote  
  • 3-4 days
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- 12.50 1,200.00 1.05 920 - 1160 1240 - 1600 #87-032 £115.60 Qty 6+ £91.80   Request Quote  
  • 3-4 days
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12.5 x 17.6 - 1,200.00 1.05 920 - 1160 1240 - 1600 #87-038 £115.60 Qty 6+ £91.80   Request Quote  
  • 3-4 days
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- 25.00 1,200.00 1.05 920 - 1160 1240 - 1600 #87-044 £157.25 Qty 6+ £125.80   Request Quote  
  • 3-4 days
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25.2 x 35.6 - 1,200.00 1.05 920 - 1160 1240 - 1600 #87-050 £157.25 Qty 6+ £125.80   Request Quote  
  • 3-4 days
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Product Details

Hard coatings are used to increase durability while maintaining performance. The hard coating provides Dichroic Longpass Filters with high resistance to humidity, temperature, and abrasion, while also reducing the risk of damage when being handled.

Technical Information

Filter Type Transmitted Wavefront (RMS) Surface Quality Surface Flatness
(P-V)
R(avg) T(avg)
HP Dichroic λ/10 40-20 λ/2 >98% >90%
Fluorescence Dichroics 60-40 - >98% >90%
Dichroic Longpass λ/4 40-20 - >97% >85%

Accessories

Title CompareStock Number  Price Buy
400 - 750nm, 25mm Dia., Dichroic Longpass Filter Kit (8 Filters) #15-102 £1,079.50   Request Quote
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800 - 1200nm, 25mm Dia., Dichroic Longpass Filter Kit (9 Filters) #15-103 £1,177.25   Request Quote
  • 3-4 days
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400 - 750nm, 25.2 x 35.6mm, Dichroic Longpass Filter Kit (8 Filters) #15-104 £1,079.50   Request Quote
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800 - 1200nm, 25.2 x 35.6mm, Dichroic Longpass Filter Kit (9 Filters) #15-105 £1,177.25   Request Quote
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