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	495 - 1600 nm	> 85% (675 - 1600 nm, Average Polarization) > 80% (675 - 1600 nm, Absolute Polarization)	25.2 x 35.6 mm	In stock	$ 174.00
Product Code Wavelength Range 495 - 1600 nm Cut-On Wavelength 650 nm (±13 nm) Reflection Wavelength 495 - 610 nm Transmission Wavelength 675 - 1600 nm Coating Hard Coating Reflectance > 97% (495 - 610 nm, Average Polarization) > 95% (495 - 610 nm, Absolute Polarization) Transmittance > 85% (675 - 1600 nm, Average Polarization) > 80% (675 - 1600 nm, Absolute Polarization) Dimensions 25.2 x 35.6 mm Thickness 1.05 mm Substrate Fused Silica Shape Rectangular Angle of Incidence 45° Surface Quality 60-40 scratch-dig Thickness Tolerance ±0.1 mm Supplier Location New Jersey, USA See product details More from Edmund Optics
Longpass Filter	950 - 2000 nm (Transmission) 300 - 750 nm (Blocking Range)	> 80% (950 - 2000 nm, Average) < 0.1% (300 - 750 nm, Average)	Ø 25 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 25 mm Dimensions Ø 25 mm Thickness 1.1 mm Blocking Wavelength Range 300 - 750 nm Substrate Borofloat Shape Round Angle of Incidence 0° Supplier Location Netherlands See product details More from PHYSIX Photonics
Longpass Filter	946 nm, 473 nm, 808 nm, 1064 nm	-	Ø 12.7 mm (0.5")	Contact Supplier	$ 195.71
Product Code Wavelength Range 946 nm, 473 nm, 808 nm, 1064 nm Center Wavelength 1064 nm, 473 nm, 808 nm, 946 nm Reflection Wavelength 946 nm, 473 nm, 808 nm, 1064 nm Coating Reflective V-Coating (946 nm) AR/Transmissive V-Coating (473 nm) (Rear) AR/Transmissive V-Coating (808 nm) (Rear) Reflectance > 99.9% (0°, 946 nm, Front) < 5% (0°, 473 nm, Front) < 10% (0°, 808 nm, Front) < 30% (0°, 1064 nm, Front) < 0.3% (0°, 473 nm, Rear) < 0.3% (0°, 808 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' Substrate Fused Silica Shape Round Angle of Incidence 0° Surface Quality 10-5 scratch-dig (Output Face) 5/1x0.025; L1x0.004 (Front), 5/1x0.025; L1x0.004 (Rear) (ISO-7) 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 Multi Wavelength Narrowband Laser Type Nd:YAG, Ti:Sa Radius of Curvature 75 mm Type of Curvature Plano-Concave Supplier Location Germany See product details More from LAYERTEC
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 1.75 mm Blocking Wavelength Range 280 - 380 nm Substrate Borofloat Shape Round Angle of Incidence 0° Supplier Location Netherlands See product details More from PHYSIX Photonics
Longpass Filter	-	> 90% (880 - 1100 nm, Minimum)	Ø 41 mm	In stock	$ 55.00
Product Code Cut-On Wavelength 850 nm Transmission Wavelength 880 - 1100 nm Coating Hard Coating Transmittance > 90% (880 - 1100 nm, Minimum) Diameter 41 mm (Outer) Dimensions Ø 41 mm Thickness 5.2 mm (Mount) 2 mm (Substrate) 7 mm (Mount) Substrate Acrylic Shape Round Clear Aperture 34 mm Filter Thread M39x0.50 Supplier Location New Jersey, USA See product details More from Edmund Optics
Longpass Filter	820 - 990 nm 1030 - 1200 nm	-	Ø 6.35 mm (0.25")	Contact Supplier	$ 199.03
Product Code Wavelength Range 820 - 990 nm 1030 - 1200 nm Center Wavelength 1030 - 1200 nm 820 - 990 nm Reflection Wavelength 1030 - 1200 nm Coating BBHR (820 - 990 nm) BBAR (1030 - 1200 nm) (Rear) Reflectance < 0.2% (22° 30', 1030 - 1200 nm, Rear) > 99% (22° 30', 820 - 990 nm, Front) (s-pol) < 3% (22° 30', 1030 - 1200 nm, Front) (s-pol) > 99% (22° 30', 820 - 990 nm, Front) (p-pol) < 3% (22° 30', 1030 - 1200 nm, Front) (p-pol) Diameter 6.35 mm (0.25") Dimensions Ø 6.35 mm (0.25") Thickness 2.3 mm Substrate N-BK7 Shape Round Angle of Incidence 22.5° Surface Quality 10-5 scratch-dig (Output Face) 5/1x0.025 (Front), 5/1x0.025 (Rear) (ISO-7) Thickness Tolerance ±0.1 mm Diameter Tolerance +0.05/-0.05 mm Surface Irregularity λ/10 (546.1 nm, Rear) λ/10 (546.1 nm, Front) Coating Features Broadband Laser Type Nd:YAG Wedge 30' Chamfer 0.4 mm (Rear) 0.2 mm (Front) Chamfer Tolerance ±0.05 mm Supplier Location Germany See product details More from LAYERTEC
Longpass Filter	-	-	Ø 25 mm	Contact Supplier	$ 30.51
Product Code Cut-On Wavelength 645 nm Diameter 25 mm Dimensions Ø 25 mm Thickness 1.1 mm Substrate Borosilicate Shape Round 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	420 - 780 nm (Transmission) 280 - 380 nm (Blocking Range)	> 85% (420 - 780 nm, Average) < 1% (280 - 380 nm)	50 x 50 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) Dimensions 50 x 50 mm Thickness 1.1 mm Blocking Wavelength Range 280 - 380 nm Substrate Borofloat Shape Square Angle of Incidence 0° Supplier Location Netherlands See product details More from PHYSIX Photonics
Longpass Filter	565 - 1600 nm	> 85% (780 - 1600 nm, Average Polarization) > 80% (780 - 1600 nm, Absolute Polarization)	25.2 x 35.6 mm	In stock	$ 180.00
Product Code Wavelength Range 565 - 1600 nm Cut-On Wavelength 750 nm (±15 nm) Reflection Wavelength 565 - 715 nm Transmission Wavelength 780 - 1600 nm Coating Hard Coating Reflectance > 97% (565 - 715 nm, Average Polarization) > 95% (565 - 715 nm, Absolute Polarization) Transmittance > 85% (780 - 1600 nm, Average Polarization) > 80% (780 - 1600 nm, Absolute Polarization) Dimensions 25.2 x 35.6 mm Thickness 1.05 mm Substrate Fused Silica Shape Rectangular Angle of Incidence 45° Surface Quality 60-40 scratch-dig Thickness Tolerance ±0.1 mm Supplier Location New Jersey, USA See product details More from Edmund Optics
Longpass Filter	-	-	Ø 12.7 mm (0.5")	Contact Supplier	Add to cart to request quote
Product Code Cut-On Wavelength 915 nm Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 3 mm Shape Round Blocking > 5 OD (750 - 895 nm) Supplier Location Vermont, USA See product details More from omega optical
Longpass Filter	-	> 90% (815 - 1100 nm, Minimum)	Ø 36 mm	Contact Supplier	$ 55.00
Product Code Cut-On Wavelength 800 nm Transmission Wavelength 815 - 1100 nm Coating Hard Coating Transmittance > 90% (815 - 1100 nm, Minimum) Diameter 36 mm (Outer) Dimensions Ø 36 mm Thickness 5.2 mm (Mount) 1 mm, 3 mm (Substrate) 7 mm (Mount) Substrate Acrylic Shape Round Clear Aperture 29 mm Filter Thread M34x0.50 Supplier Location New Jersey, USA See product details More from Edmund Optics
Longpass Filter	-	90%	Ø 12.5 mm	Contact Supplier	Add to cart to request quote
Product Code Cut-On Wavelength 1050 nm Transmittance 90% Diameter 12.5 mm Dimensions Ø 12.5 mm Substrate Silicon Shape Round Supplier Location Vermont, USA See product details More from omega optical
Longpass Filter	360 - 435 nm 700 - 950 nm 680 - 950 nm	-	Ø 12.7 mm (0.5")	In stock	$ 262.05
Product Code Wavelength Range 360 - 435 nm 700 - 950 nm 680 - 950 nm Center Wavelength 360 - 435 nm 680 - 950 nm 700 - 950 nm Reflection Wavelength 360 - 435 nm 700 - 950 nm 680 - 950 nm Coating BBHR (360 - 435 nm) BBAR (680 - 950 nm) (Rear) Reflectance > 99.9% (0°, 360 - 435 nm, Front) < 2% (0°, 700 - 950 nm, Front) 0.25% (0°, 680 - 950 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' Substrate Fused Silica Shape Round Angle of Incidence 0° Surface Quality 10-5 scratch-dig (Output Face) 5/1x0.025; L1x0.004 (Front), 5/1x0.025; L1x0.004 (Rear) (ISO-7) Thickness Tolerance ±0.1 mm Applications Pump Mirror Diameter Tolerance +0.05/-0.05 mm Surface Irregularity λ/10 (546.1 nm, Rear) Coating Features Broadband Radius of Curvature 200 mm Type of Curvature Plano-Concave Chamfer 0.3 mm (Rear) 0.3 mm (Front) Chamfer Tolerance ±0.1 mm Supplier Location Germany See product details More from LAYERTEC
Longpass Filter	200 - 1650 nm	> 91% (765 - 1650 nm)	Ø 12.5 mm	In stock	$ 198.00
Product Code Wavelength Range 200 - 1650 nm Cut-On Wavelength 750 nm (±7.5 nm) Transmission Wavelength 765 - 1650 nm Coating Hard Coating Transmittance > 91% (765 - 1650 nm) Diameter 12.5 mm Dimensions Ø 12.5 mm Thickness 2 mm Substrate Fused Silica Shape Round Angle of Incidence 0° Surface Quality 60-40 scratch-dig Clear Aperture > 10 mm Thickness Tolerance ±0.1 mm Diameter Tolerance +0/-0.2 mm Optical Density > 4 (Average) Supplier Location New Jersey, USA See product details More from Edmund Optics
Longpass Filter	-	-	50 x 50 mm	Contact Supplier	Add to cart to request quote
Product Code Cut-On Wavelength 800 nm (±10 nm) Dimensions 50 x 50 mm Thickness 0 mm Shape Square Angle of Incidence 0 - 15° (Half-Cone) Clear Aperture > 46 mm Blocking > 4 OD (760 nm) Length 50 mm Width 50 mm (+0/-0.25) Supplier Location Vermont, USA See product details More from omega optical
Longpass Filter	-	95.2869% (510 - 1100 nm)	Ø 10 mm	In stock	$ 175.00
Product Code Cut-On Wavelength 510 nm Transmission Wavelength 510 - 1100 nm Transmittance 95.2869% (510 - 1100 nm) Diameter 10 mm Dimensions Ø 10 mm Shape Round Applications Fluorescence Blocking 5.8 OD (300 - 492 nm) Mount Non-Threaded Mount, 10 mm Supplier Location Vermont, USA Selected Product Option 10mmR R=Mounted in Ring See product details More from Chroma
Longpass Filter	-	-	Ø 11.3 mm	Contact Supplier	Add to cart to request quote
Product Code Cut-On Wavelength 660 nm Diameter 11.3 mm Dimensions Ø 11.3 mm Thickness 3.3 mm Shape Round Angle of Incidence 0° (±5°, Half-Cone) Blocking > 3 OD (625 - 635 nm) > 2 OD (635 - 640 nm) Supplier Location Vermont, USA See product details More from omega optical
Longpass Filter	-	85%	Ø 25 mm	1 weeks	$ 121.00
Product Code Cut-On Wavelength 1000 nm (±10 nm) Transmittance 85% Diameter 25 mm Dimensions Ø 25 mm Thickness 3 mm Substrate Green Glass Shape Round Angle of Incidence 0° Surface Quality 60-40 scratch-dig Clear Aperture 23.75 mm Thickness Tolerance ±0.25 mm Applications Fluorescence Imaging Microscopy Raman Surface Irregularity < λ/4 (Flatness) Operating Temperature -50 to 200 °C Refractive Index 1.76 Supplier Location New Hampshire, USA See product details More from Andover
Longpass Filter	610 - 1200 nm (Transmission) 200 nm (Blocking Range) 588 nm (Blocking Range)	91% (610 - 1200 nm, Average)	Ø 12.5 mm	1 weeks	$ 104.00
Product Code Wavelength Range 610 - 1200 nm (Transmission) 200 nm (Blocking Range) 588 nm (Blocking Range) Cut-On Wavelength 600 nm (±6 nm) Transmittance 91% (610 - 1200 nm, Average) Diameter 12.5 mm Dimensions Ø 12.5 mm Thickness 1.5 mm Parallelism 1' Blocking Wavelength Range 200 nm (4 OD) 588 nm Substrate Quartz Shape Round Angle of Incidence 0° Surface Quality 60-40 scratch-dig Clear Aperture 11.875 mm Thickness Tolerance ±0.25 mm Applications Fluorescence Imaging Microscopy Raman Blocking > 4 OD (200 nm, 588 nm) Surface Irregularity < λ (Flatness) < 4λ (Flatness) Operating Temperature -50 to 200 °C Refractive Index 1.76 Supplier Location New Hampshire, USA See product details More from Andover
Longpass Filter	946 nm, 473 nm, 1064 nm, 1320 nm	5% (0°, 473 nm, Front) 5% (0°, 1064 nm, Front) 10% (0°, 1320 nm, Front)	Ø 12.7 mm (0.5")	Contact Supplier	$ 175.81
Product Code Wavelength Range 946 nm, 473 nm, 1064 nm, 1320 nm Center Wavelength 1064 nm, 1320 nm, 473 nm, 946 nm Reflection Wavelength 946 nm, 473 nm, 1064 nm, 1320 nm Transmission Wavelength 473 nm, 1064 nm, 1320 nm Coating AR/Transmissive V-Coating (1064 nm) AR/Transmissive V-Coating (1320 nm) AR/Transmissive V-Coating (473 nm) Reflective V-Coating (946 nm) AR/Transmissive V-Coating (1064 nm) (Rear) AR/Transmissive V-Coating (1320 nm) (Rear) AR/Transmissive V-Coating (473 nm) (Rear) Reflectance > 99.9% (0°, 946 nm, Front) 0.25% (0°, 473 nm, Rear) 0.25% (0°, 1064 nm, Rear) 8% (0°, 1320 nm, Rear) Transmittance 5% (0°, 473 nm, Front) 5% (0°, 1064 nm, Front) 10% (0°, 1320 nm, Front) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 6.35 mm (0.25") Parallelism 5' Substrate Fused Silica Shape Round Angle of Incidence 0° Surface Quality 10-5 scratch-dig (Output Face) 5/1x0.025; L1x0.004 (Front), 5/1x0.025; L1x0.004 (Rear) (ISO-7) Thickness Tolerance ±0.1 mm Applications Pump Mirror Diameter Tolerance +0.05/-0.05 mm Coating Features Multi Wavelength Narrowband Supplier Location Germany See product details More from LAYERTEC