Dielectric Filters

Optical filters designed with dielectric thin-film coatings to restrict transmission and/or reflection to specific wavelength ranges with high contrast. Learn More

Product	Wavelength Range	Transmittance	Dimensions	Availability	Price (USD)
Longpass Filter	-	97.7305% (540 - 1000 nm)	Ø 21.9 mm	In stock	$ 365.00
Product Code Cut-On Wavelength 540 nm Transmission Wavelength 540 - 1000 nm Transmittance 97.7305% (540 - 1000 nm) Diameter 21.9 mm Dimensions Ø 21.9 mm Shape Round Applications Fluorescence Blocking 6 OD (300 - 522 nm) Mount Non-Threaded Mount, 21.9 mm Supplier Location Vermont, USA Selected Product Option 21.9mmR R=Mounted in Ring See product details More from Chroma
Longpass Filter	-	> 90% (1013 - 2150 nm)	Ø 25 mm (0.98")	In stock	$ 143.81
Product Code Cut-On Wavelength 1000 nm Transmittance > 90% (1013 - 2150 nm) Diameter 25 mm (0.98") Dimensions Ø 25 mm (0.98") Thickness 3.5 mm Shape Round Substrate UV Fused Silica Surface Quality 40-20 scratch-dig Clear Aperture Ø 21.1 mm (0.83") Optical Density > 5 (200 - 987 nm) Transmitted Wavefront Error λ/4 (632.8 nm) Damage Threshold Pulsed 3.75 J/cm² (0.516 mm, 10 ns, 10 Hz, 1064 nm) Supplier Location New Jersey, USA See product details More from Thorlabs
Longpass Filter	600 - 1600 nm	> 85% (890 - 1600 nm)	6 x 6 mm (+0/-0.2 mm)	In stock	$ 46.50
Product Code Wavelength Range 600 - 1600 nm Cut-On Wavelength 850 nm (±17 nm) Transmission Wavelength 890 - 1600 nm Coating Hard Coating Transmittance > 85% (890 - 1600 nm) Dimensions 6 x 6 mm (+0/-0.2 mm) Thickness 2 mm Shape Square Substrate Borofloat Surface Quality 60-40 scratch-dig Angle of Incidence 0° Clear Aperture 5.4 x 5.4 mm Thickness Tolerance ±0.1 mm Optical Density > 2 (Average) Supplier Location New Jersey, USA See product details More from Edmund Optics
Longpass Filter	355 - 600 nm (Transmission) 220 - 330 nm (Blocking Range)	> 80% (355 - 600 nm, Average) < 1% (220 - 330 nm)	Ø 50 mm	Contact Supplier	Add to cart to request quote
Product Code Wavelength Range 355 - 600 nm (Transmission) 220 - 330 nm (Blocking Range) Cut-On Wavelength 345 nm (±7 nm) Transmission Wavelength 355 - 600 nm Coating Dielectric Transmittance > 80% (355 - 600 nm, Average) < 1% (220 - 330 nm) Diameter 50 mm Dimensions Ø 50 mm Thickness 3 mm Blocking Wavelength Range 220 - 330 nm Shape Round Substrate Fused Silica Angle of Incidence 0° Supplier Location Netherlands See product details More from PHYSIX Photonics
Longpass Filter	-	> 90% (880 - 1100 nm, Minimum)	Ø 64 mm	In stock	$ 77.00
Product Code Cut-On Wavelength 850 nm Transmission Wavelength 880 - 1100 nm Coating Hard Coating Transmittance > 90% (880 - 1100 nm, Minimum) Diameter 64 mm (Outer) Dimensions Ø 64 mm Thickness 5.2 mm (Mount) 2 mm (Substrate) 7 mm (Mount) Shape Round Substrate Acrylic Clear Aperture 57.1 mm Filter Thread M62x0.75 Supplier Location New Jersey, USA See product details More from Edmund Optics
Longpass Filter	1030 nm (Front, Center Wavelength) 1030 nm (Rear, Center Wavelength) 343 nm (Front, Center Wavelength) 515 nm (Front, Center Wavelength) 515 nm (Rear, Center Wavelength)	-	Ø 50 mm	In stock	$ 547.32
Product Code Wavelength Range 1030 nm (Front, Center Wavelength) 1030 nm (Rear, Center Wavelength) 343 nm (Front, Center Wavelength) 515 nm (Front, Center Wavelength) 515 nm (Rear, Center Wavelength) Center Wavelength 1030 nm (Front) 1030 nm (Rear) 343 nm (Front) 515 nm (Front) 515 nm (Rear) Reflection Wavelength 343 nm, 515 nm, 1030 nm Coating AR/Transmissive V-Coating (1030 nm) AR/Transmissive V-Coating (515 nm) Reflective V-Coating (343 nm) AR/Transmissive V-Coating (1030 nm) (Rear) AR/Transmissive V-Coating (515 nm) (Rear) Coating Method Ion Beam Sputtering (Front) Ion Beam Sputtering (Rear) Reflectance > 99.5% (45°, 343 nm, Front) < 1% (45°, 515 nm, Front) < 1% (45°, 1030 nm, Front) < 0.7% (45°, 515 nm, Rear) < 0.7% (45°, 1030 nm, Rear) Diameter 50 mm Dimensions Ø 50 mm Thickness 9.5 mm Parallelism < 5' Shape Round Substrate UV Fused Silica Surface Quality 10-5 scratch-dig 5/3x0.040 (ISO-7) Angle of Incidence 45° Diameter Tolerance +0/-0.1 mm Surface Irregularity λ/10 (546 nm, Flatness) Coating Features Multi Wavelength Narrowband Supplier Location Germany See product details More from LASEROPTIK
Longpass Filter	420 - 780 nm (Transmission) 280 - 380 nm (Blocking Range)	> 85% (420 - 780 nm, Average) < 1% (280 - 380 nm)	Ø 25 mm	Contact Supplier	Add to cart to request quote
Product Code Wavelength Range 420 - 780 nm (Transmission) 280 - 380 nm (Blocking Range) Cut-On Wavelength 405 nm (±8 nm) Transmission Wavelength 420 - 780 nm Coating Dielectric Transmittance > 85% (420 - 780 nm, Average) < 1% (280 - 380 nm) Diameter 25 mm Dimensions Ø 25 mm Thickness 1.1 mm Blocking Wavelength Range 280 - 380 nm Shape Round Substrate Borofloat Angle of Incidence 0° Supplier Location Netherlands See product details More from PHYSIX Photonics
Bandpass Filter	1064 nm (Front, Center Wavelength) 1064 nm (Rear, Center Wavelength) 355 nm (Front, Center Wavelength) 532 nm (Front, Center Wavelength)	-	Ø 25 mm	In stock	$ 259.84
Product Code Wavelength Range 1064 nm (Front, Center Wavelength) 1064 nm (Rear, Center Wavelength) 355 nm (Front, Center Wavelength) 532 nm (Front, Center Wavelength) Center Wavelength 1064 nm (Front) 1064 nm (Rear) 355 nm (Front) 532 nm (Front) Reflection Wavelength 355 nm, 532 nm, 1064 nm Coating AR/Transmissive V-Coating (1064 nm) Reflective V-Coating (355 nm) Reflective V-Coating (532 nm) AR/Transmissive V-Coating (1064 nm) (Rear) Coating Method Electron Beam Evaporation (Front) Electron Beam Evaporation (Rear) Reflectance > 99% (45°, 355 nm, Front) > 95% (45°, 532 nm, Front) < 2% (45°, 1064 nm, Front) < 0.6% (45°, 1064 nm, Rear) Diameter 25 mm Dimensions Ø 25 mm Thickness 6.35 mm (0.25") Parallelism < 5' Shape Round Substrate UV Fused Silica Surface Quality 10-5 scratch-dig 5/3x0.025 (ISO-7) Angle of Incidence 45° Diameter Tolerance +0/-0.1 mm Surface Irregularity λ/10 (546 nm, Flatness) Coating Features Multi Wavelength Narrowband Supplier Location Germany See product details More from LASEROPTIK
Longpass Filter	-	> 90% (1467 - 2150 nm)	Ø 25 mm (0.98")	In stock	$ 143.81
Product Code Cut-On Wavelength 1450 nm Transmittance > 90% (1467 - 2150 nm) Diameter 25 mm (0.98") Dimensions Ø 25 mm (0.98") Thickness 3.5 mm Shape Round Substrate UV Fused Silica Surface Quality 40-20 scratch-dig Clear Aperture Ø 21.1 mm (0.83") Optical Density > 5 (200 - 1433 nm) Transmitted Wavefront Error λ/4 (632.8 nm) Supplier Location New Jersey, USA See product details More from Thorlabs
Longpass Filter	420 - 780 nm (Transmission) 280 - 380 nm (Blocking Range)	> 85% (420 - 780 nm, Average) < 1% (280 - 380 nm)	Ø 25 mm	Contact Supplier	Add to cart to request quote
Product Code Wavelength Range 420 - 780 nm (Transmission) 280 - 380 nm (Blocking Range) Cut-On Wavelength 405 nm (±8 nm) Transmission Wavelength 420 - 780 nm Coating Dielectric Transmittance > 85% (420 - 780 nm, Average) < 1% (280 - 380 nm) Diameter 25 mm Dimensions Ø 25 mm Thickness 2 mm Blocking Wavelength Range 280 - 380 nm Shape Round Substrate Borofloat Angle of Incidence 0° Supplier Location Netherlands See product details More from PHYSIX Photonics
Longpass Filter	950 - 2000 nm (Transmission) 300 - 750 nm (Blocking Range)	> 80% (950 - 2000 nm, Average) < 0.1% (300 - 750 nm, Average)	50 x 50 mm	Contact Supplier	Add to cart to request quote
Product Code Wavelength Range 950 - 2000 nm (Transmission) 300 - 750 nm (Blocking Range) Cut-On Wavelength 860 nm (±15 nm) Transmission Wavelength 950 - 2000 nm Coating Dielectric Transmittance > 80% (950 - 2000 nm, Average) < 0.1% (300 - 750 nm, Average) Dimensions 50 x 50 mm Thickness 1.1 mm Blocking Wavelength Range 300 - 750 nm Shape Square Substrate Borofloat Angle of Incidence 0° Supplier Location Netherlands See product details More from PHYSIX Photonics
Longpass Filter	690 - 890 nm 700 - 880 nm 450 - 550 nm 532 nm	-	Ø 12.7 mm (0.5")	Contact Supplier	$ 222.25
Product Code Wavelength Range 690 - 890 nm 700 - 880 nm 450 - 550 nm 532 nm Center Wavelength 450 - 550 nm 532 nm 690 - 890 nm 700 - 880 nm Reflection Wavelength 690 - 890 nm 532 nm 450 - 550 nm Coating BBHR (690 - 890 nm) BBAR (450 - 550 nm) (Rear) Reflectance > 99.9% (0°, 690 - 890 nm, Front) < 1% (0°, 532 nm, Front) < 0.25% (0°, 450 - 550 nm, Rear) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 6.35 mm (0.25") Edge Thickness 6.35 mm (0.25") Parallelism 5' Shape Round Substrate Fused Silica Surface Quality 10-5 scratch-dig (Output Face) 5/1x0.025; L1x0.004 (Front), 5/1x0.025; L1x0.004 (Rear) (ISO-7) Angle of Incidence 0° Thickness Tolerance ±0.1 mm Applications Pump Mirror Diameter Tolerance +0.05/-0.05 mm Surface Irregularity λ/10 (546.1 nm, Rear) λ/4 (546.1 nm, Front) Coating Features Broadband Laser Type Ti:Sa, Yb:YAG Radius of Curvature 50 mm Type of Curvature Plano-Concave Group Delay Dispersion 0 fs² (700 - 880 nm) Chamfer 0.3 mm (Rear) 0.3 mm (Front) Supplier Location Germany See product details More from LAYERTEC
Longpass Filter	-	> 90% (359.6 - 800.8 nm)	Ø 25 mm	6 - 12 weeks	$ 796.00
Product Code Transmission Wavelength 359.6 - 800.8 nm Transmittance > 90% (359.6 - 800.8 nm) Diameter 25 mm Dimensions Ø 25 mm Shape Round Surface Quality 60-40 scratch-dig Angle of Incidence 0° Clear Aperture Ø 22 mm Applications Raman Mount Non-Threaded Mount, 25mm Optical Density 6 (Average) Weight 5 g Supplier Location California, USA See product details More from OptoSigma
Longpass Filter	-	-	Ø 12.5 mm	Contact Supplier	$ 28.22
Product Code Cut-On Wavelength 625 nm Diameter 12.5 mm Dimensions Ø 12.5 mm Thickness 1.1 mm Shape Round Substrate Borosilicate Surface Quality 60-40 scratch-dig Thickness Tolerance ±0.2 mm Diameter Tolerance +0/-0.2 mm Length Tolerance ±0.25 mm Width Tolerance ±0.25 mm Supplier Location United Kingdom; Rhode Island, USA See product details More from Knight Optical
Longpass Filter	950 - 2000 nm (Transmission) 300 - 750 nm (Blocking Range)	> 80% (950 - 2000 nm, Average) < 0.1% (300 - 750 nm, Average)	Ø 80 mm	Contact Supplier	Add to cart to request quote
Product Code Wavelength Range 950 - 2000 nm (Transmission) 300 - 750 nm (Blocking Range) Cut-On Wavelength 860 nm (±15 nm) Transmission Wavelength 950 - 2000 nm Coating Dielectric Transmittance > 80% (950 - 2000 nm, Average) < 0.1% (300 - 750 nm, Average) Diameter 80 mm Dimensions Ø 80 mm Thickness 1.1 mm Blocking Wavelength Range 300 - 750 nm Shape Round Substrate Borofloat Angle of Incidence 0° Supplier Location Netherlands See product details More from PHYSIX Photonics
Longpass Filter	1064 nm (Front, Center Wavelength) 1064 nm (Rear, Center Wavelength) 532 nm (Front, Center Wavelength)	-	Ø 25 mm	In stock	$ 221.14
Product Code Wavelength Range 1064 nm (Front, Center Wavelength) 1064 nm (Rear, Center Wavelength) 532 nm (Front, Center Wavelength) Center Wavelength 1064 nm (Front) 1064 nm (Rear) 532 nm (Front) Reflection Wavelength 532 nm, 1064 nm Coating AR/Transmissive V-Coating (1064 nm) Reflective V-Coating (532 nm) AR/Transmissive V-Coating (1064 nm) (Rear) Coating Method Electron Beam Evaporation (Front) Electron Beam Evaporation (Rear) Reflectance > 99% (0°, 532 nm, Front) < 0.5% (0°, 1064 nm, Front) < 0.1% (0°, 1064 nm, Rear) Diameter 25 mm Dimensions Ø 25 mm Thickness 6.35 mm (0.25") Parallelism < 5' Shape Round Substrate UV Fused Silica Surface Quality 10-5 scratch-dig 5/3x0.025 (ISO-7) Angle of Incidence 0° Diameter Tolerance +0/-0.1 mm Surface Irregularity λ/10 (546 nm, Flatness) Coating Features Multi Wavelength Narrowband Supplier Location Germany See product details More from LASEROPTIK
Longpass Filter	-	> 93% (812.1 - 1200 nm)	Ø 25 mm	6 - 12 weeks	$ 363.00
Product Code Transition Wavelength 805 nm Transmission Wavelength 812.1 - 1200 nm Transmittance > 93% (812.1 - 1200 nm) Diameter 25 mm Dimensions Ø 25 mm Thickness 3.5 mm Shape Round Surface Quality 60-40 scratch-dig Angle of Incidence 0° Clear Aperture Ø 22 mm Mount Non-Threaded Mount, 25mm Optical Density 5 (Average) Weight 5 g Supplier Location California, USA See product details More from OptoSigma
Longpass Filter	-	> 90% (815 - 915 nm)	Ø 25 mm	2 weeks	$ 363.00
Product Code Transition Wavelength 812 nm Transmission Wavelength 815 - 915 nm Transmittance > 90% (815 - 915 nm) Diameter 25 mm Dimensions Ø 25 mm Thickness 3.5 mm Shape Round Surface Quality 60-40 scratch-dig Angle of Incidence 0° Clear Aperture Ø 22 mm Mount Non-Threaded Mount, 25mm Optical Density 6 (Average) Weight 5 g Supplier Location California, USA See product details More from OptoSigma
Longpass Filter	625 - 800 nm (Transmission) 300 - 550 nm (Blocking Range)	> 85% (625 - 800 nm, Average) < 1% (300 - 550 nm, Average)	50 x 50 mm	Contact Supplier	Add to cart to request quote
Product Code Wavelength Range 625 - 800 nm (Transmission) 300 - 550 nm (Blocking Range) Cut-On Wavelength 600 nm (±10 nm) Transmission Wavelength 625 - 800 nm Coating Dielectric Transmittance > 85% (625 - 800 nm, Average) < 1% (300 - 550 nm, Average) Dimensions 50 x 50 mm Thickness 1.1 mm Blocking Wavelength Range 300 - 550 nm Shape Square Substrate Borofloat Angle of Incidence 0° Supplier Location Netherlands See product details More from PHYSIX Photonics
Longpass Filter	1064 nm (Front, Center Wavelength) 1064 nm (Rear, Center Wavelength) 532 nm (Front, Center Wavelength)	> 99.8% (45°, 532 nm, Front) (p-pol) < 1% (45°, 1064 nm, Front) (p-pol) > 99.8% (45°, 532 nm, Front) (s-pol) < 1% (45°, 1064 nm, Front) (s-pol)	Ø 25 mm	In stock	$ 221.14
Product Code Wavelength Range 1064 nm (Front, Center Wavelength) 1064 nm (Rear, Center Wavelength) 532 nm (Front, Center Wavelength) Center Wavelength 1064 nm (Front) 1064 nm (Rear) 532 nm (Front) Reflection Wavelength 1064 nm Coating AR/Transmissive V-Coating (1064 nm) Reflective V-Coating (532 nm) AR/Transmissive V-Coating (1064 nm) (Rear) Coating Method Electron Beam Evaporation (Front) Electron Beam Evaporation (Rear) Reflectance < 0.1% (45°, 1064 nm, Rear) > 99.8% (45°, 532 nm, Front) (s-pol) < 1% (45°, 1064 nm, Front) (s-pol) > 99.8% (45°, 532 nm, Front) (p-pol) < 1% (45°, 1064 nm, Front) (p-pol) Transmittance > 99.8% (45°, 532 nm, Front) (p-pol) < 1% (45°, 1064 nm, Front) (p-pol) > 99.8% (45°, 532 nm, Front) (s-pol) < 1% (45°, 1064 nm, Front) (s-pol) Diameter 25 mm Dimensions Ø 25 mm Thickness 6.35 mm (0.25") Parallelism < 5' Shape Round Substrate UV Fused Silica Surface Quality 10-5 scratch-dig 5/3x0.025 (ISO-7) Angle of Incidence 45° Diameter Tolerance +0/-0.1 mm Surface Irregularity λ/10 (546 nm, Flatness) Coating Features Multi Wavelength Narrowband Supplier Location Germany See product details More from LASEROPTIK