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WaveQuanta

Reflective Neutral Density Filter, Round, Unmounted NDFR10-40

NDFR10-40
$83.85
In Stock
Key Specifications
Wavelength 350.0nm
Diameter 25.4mm
LIDT 0.019J/cm²
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Reflective Neutral Density Filter, Round, Unmounted — Model NDFR10-40

Operating wavelength 350 nm-1100 nm, ØØ25.4 mm.

Product Description

  • Substrate Material: N-BK7
  • Working Wavelength: 350 nm-1100 nm
  • OD: 0.2, 0.3, 0.4, 0.5, 1.0, 2.0, 3.0, 4.0
  • Low Power Applications
  • Reflective Neutral Density Filters

LBTEK Reflective Neutral Density (ND) Filters are made of N-BK7 substrate with chrome-nickel-iron alloy coating, available in optical density (OD) ranges from 0.2 to 4.0. The sizes include Ø12.7 mm, Ø25.4 mm, and 50.8 mm×50.8 mm. LBTEK filters can be mounted on threaded tubes or coaxial mounting plates for use in coaxial systems, or installed in free space. LBTEK also offers customization services for other special sizes and optical density value attenuators. Please contact Technical Support for any requirements.

Reflective Neutral Density Filter, Round, Unmounted

  • Substrate Material: N-BK7
  • Working Wavelength: 350 nm-1100 nm
  • Low Power Applications
  • Reflective Neutral Density Filter

LBTEK unmounted round reflective neutral density filters with optical density (OD) ranging from 0.2 to 4.0 are available in sizes of Ø12.7 mm and Ø25.4 mm. By depositing chrome-Inconel coating (single-sided) on N-BK7 substrates, these filters achieve a smooth OD curve across the 350 nm-1100 nm wavelength range. Although classified as reflective neutral density filters, the chrome-Inconel coating still absorbs a portion of the incident light. For optimal performance, it is recommended that light enters from the chrome-Inconel coated side. Be careful to avoid contact with this unprotected metal film, as contact may scratch the unprotected surface. It is recommended to use an air blower for cleaning.

Clear Aperture>90%
Thickness2 mm
Damage Threshold0.019 J/cm2@1030 nm, 290 fs, 100 Hz, Ø21.486 μm (Single Pulse) 0.017 J/cm2@1030 nm, 290 fs, 100 Hz, Ø21.486 μm (100 Pulses)
Diameter Tolerance+0.00/-0.25 mm
Thickness Tolerance±0.3 mm
Clear Aperture>90%
Operating Wavelength350 nm-1100 nm
Thickness2 mm
DiameterØ25.4 mm
Damage Threshold0.019 J/cm2@1030 nm, 290 fs, 100 Hz, Ø21.486 μm (Single Pulse) 0.017 J/cm2@1030 nm, 290 fs, 100 Hz, Ø21.486 μm (100 Pulses)
Low damage threshold detected (0.019 J/cm²). For high-power applications, consider WaveQuanta premium IBS-coated optics with enhanced damage resistance.
Specification Sheet PDF — Download
CAD Drawing Download
3D Model (STL) STL — Download
Curve - N-BK7 Reflective Neutral Density Filters
Curve - N-BK7 Reflective Neutral Density Filters
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Product Family: Reflective Neutral Density (ND) Filters, Working Wavelength: 350 nm-1100 nm (40 variants)

Product ▴▾ SKU Size ▴▾ Clear Aperture ▴▾ Operating Wavelength ▴▾
Reflective Neutral Density Filter, Square, Unmounted NDFRS20-40 NDFRS20-40 >45 mm×45 mm >45 mm×45 mm 350 nm-1100 nm View
Reflective Neutral Density Filter, Square, Unmounted NDFRS20-30 NDFRS20-30 >45 mm×45 mm >45 mm×45 mm 350 nm-1100 nm View
Reflective Neutral Density Filter, Square, Unmounted NDFRS20-20 NDFRS20-20 >45 mm×45 mm >45 mm×45 mm 350 nm-1100 nm View
Reflective Neutral Density Filter, Square, Unmounted NDFRS20-10 NDFRS20-10 >45 mm×45 mm >45 mm×45 mm 350 nm-1100 nm View
Reflective Neutral Density Filter, Square, Unmounted NDFRS20-05 NDFRS20-05 >45 mm×45 mm >45 mm×45 mm 350 nm-1100 nm View
Reflective Neutral Density Filter, Square, Unmounted NDFRS20-04 NDFRS20-04 >45 mm×45 mm >45 mm×45 mm 350 nm-1100 nm View
Reflective Neutral Density Filter, Square, Unmounted NDFRS20-03 NDFRS20-03 >45 mm×45 mm >45 mm×45 mm 350 nm-1100 nm View
Reflective Neutral Density Filter, Square, Unmounted NDFRS20-02 NDFRS20-02 >45 mm×45 mm >45 mm×45 mm 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Unmounted NDFR10-02 NDFR10-02 Ø25.4 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Unmounted NDFR10-03 NDFR10-03 Ø25.4 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Unmounted NDFR10-04 NDFR10-04 Ø25.4 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Unmounted NDFR10-05 NDFR10-05 Ø25.4 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Unmounted NDFR10-10 NDFR10-10 Ø25.4 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Unmounted NDFR10-20 NDFR10-20 Ø25.4 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Unmounted NDFR10-30 NDFR10-30 Ø25.4 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Unmounted NDFR10-40 Current NDFR10-40 Ø25.4 mm >90% 350 nm-1100 nm
Reflective Neutral Density Filter, Round, Unmounted NDFR05-02 NDFR05-02 Ø12.7 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Unmounted NDFR05-03 NDFR05-03 Ø12.7 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Unmounted NDFR05-04 NDFR05-04 Ø12.7 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Unmounted NDFR05-05 NDFR05-05 Ø12.7 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Unmounted NDFR05-10 NDFR05-10 Ø12.7 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Unmounted NDFR05-20 NDFR05-20 Ø12.7 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Unmounted NDFR05-30 NDFR05-30 Ø12.7 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Unmounted NDFR05-40 NDFR05-40 Ø12.7 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Mounted MNDFR10-03 MNDFR10-03 Ø25.4 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Mounted MNDFR10-02 MNDFR10-02 Ø25.4 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Mounted MNDFR10-04 MNDFR10-04 Ø25.4 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Mounted MNDFR10-05 MNDFR10-05 Ø25.4 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Mounted MNDFR10-10 MNDFR10-10 Ø25.4 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Mounted MNDFR10-20 MNDFR10-20 Ø25.4 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Mounted MNDFR10-30 MNDFR10-30 Ø25.4 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Mounted MNDFR10-40 MNDFR10-40 Ø25.4 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Mounted MNDFR05-02 MNDFR05-02 Ø12.7 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Mounted MNDFR05-03 MNDFR05-03 Ø12.7 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Mounted MNDFR05-04 MNDFR05-04 Ø12.7 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Mounted MNDFR05-05 MNDFR05-05 Ø12.7 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Mounted MNDFR05-10 MNDFR05-10 Ø12.7 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Mounted MNDFR05-20 MNDFR05-20 Ø12.7 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Mounted MNDFR05-30 MNDFR05-30 Ø12.7 mm >90% 350 nm-1100 nm View
Reflective Neutral Density Filter, Round, Mounted MNDFR05-40 MNDFR05-40 Ø12.7 mm >90% 350 nm-1100 nm View