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Edge Filters (Long Wave) Visible Long Wave Pass Filters

Often referred to as long wave pass (LWP) and short wave pass (SWP) filters, these sharp-cut edge filters are distinguished by their high rate of transition between their region of reflection and transmission. This high rate of transition makes them an excellent choice as emission filters in fluorescence applications, and as order sorting filters in photometry. They are also very useful as stray light or trim filters, to eliminate any unwanted near band radiation. All LWP/SWP filters are constructed of hard, durable first-surface dielectric coatings, and will withstand the normal cleaning and handling associated with any high-quality optical component. Their film construction is essentially a modified quarter-wave stack, using interference effects rather than absorption to isolate their spectral bands. Unlike filter glass, which is not sensitive to wavelength shift with angle, these filters will shift shorter in wavelength with an increase in their angle of incidence. This feature can be useful in applications where it may be desirable to fine tune the 50% cuton, or cut-off wavelength. All standard edge filters are available in 50nm increments from 400nm to 1000nm. Custom edge filters are available and will be quoted upon request.
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47-619

650nm OD 2 Longpass Filter 25.0mm Diameter

  •  Diameter (mm)  25.0
     Diameter Tolerance (mm)  +0.00/-0.20
     Clear Aperture (%)
     80
     Thickness (mm)  3.0
     Thickness Tolerance (mm)
     ±0.1
     Surface Quality  40-20
     Transmitted Wavefront, RMS (λ)
     1/4
     Transmission (%)
     >85
     Transmission Wavelength (nm)
     675 - 2000
     Rejection Wavelength (nm)
     495 - 610
     Cut-On Wavelength (nm)
     650.00
     Cut-On Tolerance (%)
     ±2
     Slope Factor (%)
     3
     Angle of Incidence (°)
     0
     Optical Density OD
     >2
     Substrate
     UV Grade Fused Silica
     RoHS
     Compliant

     

  • ※ 本產品為限量銷售之特價品,若銷售完畢,本公司得保有隨時恢復原價之權利。

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47-620

700nm OD 2 Longpass Filter 25.0mm Diameter

  •  Diameter (mm)  25.0
     Diameter Tolerance (mm)  +0.00/-0.20
     Clear Aperture (%)
     80
     Thickness (mm)  3.0
     Thickness Tolerance (mm)
     ±0.1
     Surface Quality  40-20
     Transmitted Wavefront, RMS (λ)
     1/4
     Transmission (%)
     >85
     Transmission Wavelength (nm)
     775 - 2000
     Rejection Wavelength (nm)
     535 - 660
     Cut-On Wavelength (nm)
     700.00
     Cut-On Tolerance (%)
     ±2
     Slope Factor (%)
     3
     Angle of Incidence (°)
     0
     Optical Density OD
     >2
     Substrate
     UV Grade Fused Silica
     RoHS
     Compliant

     

  • ※ 本產品為限量銷售之特價品,若銷售完畢,本公司得保有隨時恢復原價之權利。

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400FH90-25

50% Point: 400nm, φ25mm

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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450FH90-25

50% Point: 450nm, φ25mm

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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500FH90-25

50% Point:500nm, φ25mm

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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550FH90-25

50% Point:550nm, φ25mm

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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600FH90-25

50% Point:600nm, φ25mm

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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650FH90-25

50% Point:650nm, φ25mm

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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700FH90-25

50% Point:700nm, φ25mm

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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400FH90-50

50% Point: 400nm, φ50mm

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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450FH90-50

50% Point: 450nm, φ50mm

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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500FH90-50

50% Point: 500nm, φ50mm

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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550FH90-50

50% Point: 550nm, φ50mm

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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600FH90-50

50% Point: 600nm, φ50mm

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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650FH90-50

50% Point: 650nm, φ50mm

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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700FH90-50

50% Point: 700nm, φ50mm

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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400FH90-50S

50% Point: 400nm, 50mm sq

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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450FH90-50S

50% Point: 450nm, 50mm sq

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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500FH90-50S

50% Point: 500nm, 50mm sq

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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550FH90-50S

50% Point: 550nm, 50mm sq

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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600FH90-50S

50% Point: 600nm, 50mm sq

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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650FH90-50S

50% Point: 650nm, 50mm sq

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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700FH90-50S

50% Point: 700nm, 50mm sq

  •  Transmission Long Wave Pass  85% average from the 50% cut-on point to 2000nm
     Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet

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 Size Tolerance  +0.0mm/-0.5mm
 Thickness  4.0mm max.
 Minimum Clear Aperture  95% of O.D.
 Substrate Material  Glass
 Flatness  3 to 5 wave per 25mm
 Parallelism  3 Arc minutes or better
 Surface Quality  80/50 Per MIL-O-13830B
 Coating Quality  40/20 Per MIL-O-13830B
 Humidity and Abrasion  Per MIL-C-675A

 Operating Temperature

 -50℃ to +100℃
 Cut-on and cut-off slopes  6% Maximum
 Cut-on and cut-off tolerance  ±10nm
 Mechanical  Not mounted in metal holders
 Transmission Long Wave Pass  85% average from the 50% cut-on point to
 2000nm
 Transmission Short Wave Pass

 85% average from the 50% cut-off point to 0.6 x the 5%
 cut-off-point
 *With the exception of the 400nm filter, all others will
 drop off in transmission at wavelengths less than
 425nm.

 Rejection Long Wave Pass  99% or greater from 0.9 x the 50% point to the ultraviolet
 Rejection Short Wave Pass  99% or greater from 1.07 x the 50% point to 1.25 x the
 50%point
 Rejection  1.7 (approximately)