BVO IR Polarizer

The Cadillac of NIR polarization, BVO IR covers all near infrared polarizer applications required by imaging or solid state instruments. The NIR bandwidth reveals unique physics where polarization can increase contrast, reduce glare, select emitted polarized states and attenuate NIR light. All can be done with this utilitarian polarizer.

Near Infrared DIchroic Linear Polarizer

  • Active Range: 700nm – 1,700nm
  • Best true NIR polarizer
  • Type – transmissive, absorptive
  • Polarize 740nm, 780nm, 850nm, 870nm, and 940nm LED’s
  • Polarize 785nm, 808nm, 830nm, 905nm, 980nm, and 1,064nm laser diodes
  • Polarize 1,310nm and 1,550nm optical communications
  • All NIR low power lasing sources
  • NIR Imaging capable
  • BBAR coated BK-7 components available
  • Polarize portion of SWIR
  • Replaces 3M polarizer – HR


  • Surveillance & Security
  • Defect Identification for Sorting
  • Machine Vision Imaging – Glare Reduction
  • NIR Sensors – Optical, Solid State
  • Multispectral Imaging
  • Agriculture Inspection
  • NIR Polarized Microscopy
  • NIR Cameras, Photography
  • NIR Semiconductor Inspection
  • NIR Raman Polarized Spectroscopy
  • NIR Astronomy
  • NIR Thermography

Spec Downloads

Precision Polarizer - Glass Laminated Components
Precision Polarizer – Glass Laminated Components
OEM Volume - Custom Specs Reduced Cost
OEM Volume – Custom Specs Reduced Cost
Raw Polarizer -  Digitally Cut to Shape or Custom Mounted
Raw Polarizer – Digitally Cut to Shape or Custom Mounted

Film Specifications

Polarizer Range 700nm – 1,700nm
Contrast Ratio 3,000:1, nominal
Maximum Dimension 60mm x 55mm
Thickness .40mm
Film Cutting Tolerances ± 50 microns
Adhesive (PSA) None
Temperature Range -20° C to 60° C
Damage Threshold 1 W/cm2, CW
0.2 J/cm2 with 20 nsec pulse, visible
Color Dark Green
Substrate Plastic Type, “Cellulose Triacetate”, dichroic
Surface Quality 80/50 Scratch-Dig

Component Specifications

Outer Dimension 25.4mm OD ± 0.20mm
Wavefront Distortion Lambda/2 measured @ 632nm
Thickness 4.5mm, ± 0.20mm
Substrates BK-7
Surface Quality 40/20 Scratch-Dig
Beam Deviation 2 Arc Minutes
Anti Reflection Coatings R ≤ 0.65% / surface, average. 400nm-900nm
R ≤ 0.65% / surface, average. 700nm-1,100nm
R ≤ 0.65% / surface, average. 900nm-1,700nm
Environmental Tolerance -10° C to 60° C

Glass & Coating

Optical Grade BK-7
  • Industry standard optics glass
  • Good transmission visible and NIR
  • Best for low wavefront distortion
  • Thickness flexibility
  • Double side polished, lambda/10 surface flatness
  • Refractive index – 1.52
  • R ≤ .65% per surface, avg.
  • Ultra broad range, 400nm to 900nm
  • R ≤ .65% per surface, avg.
  • Ultra broad range, 900nm to 1,700nm
  • pdfView Optical Grade BK-7 Specs

    Corning Display Glass
    • Thin glass, excellent clarity
    • No residual birefringence
    • Imaging quality flatness
    • Thin substrates – .7mm, 1.1mm each
    • Refractive index – 1.50
  • R ≤ .65% per surface, avg.
  • Ultra broad range, 900nm to 1,700nm
  • pdfView Corning Eagle 2000 Specs

    • No residual birefringence
    • Cheapest option for laminated products
    • Digitally cut for all geometric shapes
    • Thin substrates – flexible
    • Refractive index – 1.49

    pdfView Acrylic Specs

    BK-7 Transmission
    Corning Eagle Glass Transmission
    BBAR 400nm-900nm, BK-7 Coating Scan
    BBAR 900nm-1,700nm, BK-7 Coating Scan