Longpass Glass Color Filters

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  • UV, VIS and IR Pass Ranges
  • VIS Can Be Used for Color Bandpass

A longpass filter has low transmission in the shortwave region (stopband) and high transmission in the longwave region (passband).

Longpass Filter Kits

Longpass filter kits are available in three different options: UV-VIS, VIS, or VIS-NIR. Each kit contains 8 filters in either 12.5mm diameter, 1" diameter, or 2" square. Wooden box with foam lining is included.

  • UV-VIS Kit Contains: WG 295, WG 305, WG 320, L 38, GG 400, GG 420, GG 435, GG 455
  • VIS Kit Contains: GG 475, GG 495, OG 515, OG 530, OG 550, OG 570, OG 590, RG 610
  • VIS-NIR Kit Contains: RG 630, RG 665, RG 695, RG 715, RG 780, RG 830, RG 850, RG 1000

Complete Filter Kits

Complete filter kits available with 12.5mm diameter, 50.0mm diameter, 1" diameter, or 2" square filters. Each kit contains all 38 Longpass Glass Color Filter types.

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Description Stock No. Price In Stock  
Showing 1-20 of 168 Items | Show All Items | Sort by Spec
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N-WG-280 Long Pass Filter 12.5mm Dia
NT64-509 $15.00 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Schott N-WG280
Stopband Limit λs(nm) 230
Cut-Off Position λc (nm) 285±6
Passband Limit 1 λp1 (nm) 380
Spectral Transmittance tip (%) 99
Density (g/cm3) 2.51
Transformation Temperature (°C) 558
Color clear
Diameter (mm) 12.5
RoHS Compliant
N-WG-280 Long Pass Filter 1 Inch Dia
NT64-510 $25.00 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Schott N-WG280
Stopband Limit λs(nm) 230
Cut-Off Position λc (nm) 285±6
Passband Limit 1 λp1 (nm) 380
Spectral Transmittance tip (%) 99
Density (g/cm3) 2.51
Transformation Temperature (°C) 558
Color clear
Diameter (inches) 1
RoHS Compliant
N-WG-280 Long Pass Filter 2 Inch Square
NT64-511 $49.50 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Schott N-WG280
Stopband Limit λs(nm) 230
Cut-Off Position λc (nm) 285±6
Passband Limit 1 λp1 (nm) 380
Spectral Transmittance tip (%) 99
Density (g/cm3) 2.51
Transformation Temperature (°C) 558
Color clear
Dimensions (inches) 2 x 2
RoHS Compliant
N-WG-280 Long Pass Filter 50mm Dia
NT66-071 $49.50 Click to receive an email with delivery information. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Schott N-WG 280
Stopband Limit λs(nm) 230
Cut-Off Position λc (nm) 285±6
Passband Limit 1 λp1 (nm) 380
Spectral Transmittance tip (%) 99
Density (g/cm3) 2.51
Transformation Temperature (°C) 558
Color Clear
Diameter (mm) 50
RoHS Exempt
N-WG-295 Long Pass Filter 12.5mm Dia
NT46-416 $15.00 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Schott N-WG 295
Stopband Limit λs(nm) 250.00
Cut-Off Position λc (nm) 300±6
Passband Limit 1 λp1 (nm) 400.00
Spectral Transmittance tip (%) 99
Density (g/cm3) 2.51
Transformation Temperature (°C) 565.00
Color Clear
Diameter (mm) 12.5
RoHS Exempt
N-WG-295 Long Pass Filter 1 Inch Dia
NT46-417 $25.00 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Schott WG 295
Stopband Limit λs(nm) 265.00
Cut-Off Position λc (nm) 300±6
Passband Limit 1 λp1 (nm) 340.00
Density (g/cm3) 2.51
Transformation Temperature (°C) 557.00
Color Clear
Diameter (inches) 1
RoHS Exempt
N-WG-295 Long Pass Filter 2 Inch Sq
NT46-418 $49.50 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Schott WG 295
Stopband Limit λs(nm) 265.00
Cut-Off Position λc (nm) 300±6
Passband Limit 1 λp1 (nm) 340.00
Density (g/cm3) 2.51
Transformation Temperature (°C) 557.00
Color Clear
Dimensions (inches) 2 x 2
RoHS Exempt
N-WG-295 Long Pass Filter 50mm Dia
NT66-072 $49.50 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Schott N-WG 295
Stopband Limit λs(nm) 250
Cut-Off Position λc (nm) 300±6
Passband Limit 1 λp1 (nm) 400
Spectral Transmittance tip (%) 99
Density (g/cm3) 2.51
Transformation Temperature (°C) 565
Color Clear
Diameter (mm) 50
RoHS Exempt
N-WG-305 Long Pass Filter 12.5mm Dia
NT54-646 $15.00 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Schott N-WG 305
Stopband Limit λs(nm) 260.00
Cut-Off Position λc (nm) 309±6
Passband Limit 1 λp1 (nm) 420.00
Spectral Transmittance tip (%) 99
Density (g/cm3) 2.51
Transformation Temperature (°C) 562.00
Color Clear
Diameter (mm) 12.5
RoHS Exempt
N-WG-305 Long Pass Filter 1 Inch Dia
NT45-066 $25.00 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Schott WG 305
Stopband Limit λs(nm) 275.00
Cut-Off Position λc (nm) 309±6
Passband Limit 1 λp1 (nm) 360.00
Density (g/cm3) 2.59
Transformation Temperature (°C) 546.00
Color Clear
Diameter (inches) 1
RoHS Exempt
N-WG-305 Long Pass Filter 2 Inch Sq
NT45-061 $49.50 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Schott WG 305
Stopband Limit λs(nm) 275.00
Cut-Off Position λc (nm) 309±6
Passband Limit 1 λp1 (nm) 360.00
Density (g/cm3) 2.59
Transformation Temperature (°C) 546.00
Color Clear
Dimensions (inches) 2 x 2
RoHS Exempt
N-WG-305 Long Pass Filter 50mm Dia
NT66-073 $49.50 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Schott N-WG 305
Stopband Limit λs(nm) 260
Cut-Off Position λc (nm) 309±6
Passband Limit 1 λp1 (nm) 420
Spectral Transmittance tip (%) 99
Density (g/cm3) 2.51
Transformation Temperature (°C) 562
Color Clear
Diameter (mm) 50
RoHS Exempt
N-WG-320 Long Pass Filter 12.5mm Dia
NT46-419 $15.00 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Schott N-WG 320
Stopband Limit λs(nm) 280.00
Cut-Off Position λc (nm) 320±6
Passband Limit 1 λp1 (nm) 470.00
Spectral Transmittance tip (%) 99
Density (g/cm3) 2.51
Transformation Temperature (°C) 563.00
Color Clear
Diameter (mm) 12.5
RoHS Exempt
N-WG-320 Long Pass Filter 1 Inch Dia
NT46-420 $25.00 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Schott WG 320
Stopband Limit λs(nm) 300.00
Cut-Off Position λc (nm) 315±6
Passband Limit 1 λp1 (nm) 365.00
Density (g/cm3) 3.22
Transformation Temperature (°C) 413.00
Color Clear
Dimensions (inches) 1
RoHS Exempt
N-WG-320 Long Pass Filter 2 Inch Sq
NT46-421 $49.50 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Schott WG 320
Stopband Limit λs(nm) 300.00
Cut-Off Position λc (nm) 315±6
Passband Limit 1 λp1 (nm) 365.00
Density (g/cm3) 3.22
Transformation Temperature (°C) 413.00
Color Clear
Dimensions (inches) 2 x 2
RoHS Exempt
N-WG-320 Long Pass Filter 50mm Dia
NT66-074 $49.50 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Schott N-WG 320
Stopband Limit λs(nm) 280
Cut-Off Position λc (nm) 320±6
Passband Limit 1 λp1 (nm) 470
Spectral Transmittance tip (%) 99
Density (g/cm3) 2.51
Transformation Temperature (°C) 563
Color Clear
Diameter (mm) 50
RoHS Exempt
L-37 (370nm) Long Pass Filter 12.5mm Dia
NT66-038 $15.00 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Hoya L-37
Stopband Limit λs(nm) 323
Cut-Off Position λc (nm) 370±6
Passband Limit 1 λp1 (nm) 400
Spectral Transmittance tip (%) 93
Density (g/cm3) 3.26
Transformation Temperature (°C) 440
Color Clear
Diameter (mm) 12.5
RoHS Exempt
L-37 (370nm) Long Pass Filter 1 Inch Dia
NT66-049 $25.00 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Hoya L-37
Stopband Limit λs(nm) 323
Cut-Off Position λc (nm) 370±6
Passband Limit 1 λp1 (nm) 400
Spectral Transmittance tip (%) 93
Density (g/cm3) 3.26
Transformation Temperature (°C) 440
Color Clear
Diameter (inches) 1
RoHS Exempt
L-37 (370nm) Long Pass Filter 2 Inch Sq
NT66-060 $49.50 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Hoya L-37
Stopband Limit λs(nm) 323
Cut-Off Position λc (nm) 370±6
Passband Limit 1 λp1 (nm) 400
Spectral Transmittance tip (%) 93
Density (g/cm3) 3.26
Transformation Temperature (°C) 440
Color Clear
Dimensions (inches) 2 x 2
RoHS Exempt
L-37 (370nm) Long Pass Filter 50mm Dia
NT66-075 $49.50 In stock and ready to ship. Click to add this item to your cart.
Wavelength UV
Glass/Filter Number Hoya L-37
Stopband Limit λs(nm) 323
Cut-Off Position λc (nm) 370±6
Passband Limit 1 λp1 (nm) 400
Spectral Transmittance tip (%) 93
Density (g/cm3) 3.26
Transformation Temperature (°C) 440
Color Clear
Diameter (mm) 50
RoHS Exempt
 Sort by Spec
 
Dimensional Tolerances ±0.015" (±0.38mm)
Material Thickness 3mm, 2.5mm for L 38
Surface Quality 80-50
Pd Reflection Factor Pd =0.92 for all filters except L 38, RG665, RG695, RG715, RG780, RG830, RG850, RG1000 (Pd=0.91)
Properties Applicable to these Filters are:
λs limit of stopband: specified at 0.001% internal transmittance
λc cut-off position: specified at 50% internal transmittance
λp limit of the passband
tip internal spectral transmittance at λp
ρ density
Tg transformation temperature
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