BVO 244 Polarizer

Sometimes you just need throughput. BVO 244 is the highest transmittance visible linear polarizer available (plastic dichroic type). However, there is a trade-off with loss of contrast ratio. Our Solq and Lyot filter customers desire high transmission due to multi-stage design. Projection systems and HUDs also require clean up polarizers which do not depend on high extinction.

Very High Transmission Visible Dichroic Linear Polarizer

  • Active Range: 400nm – 700nm
  • Extremely high transmission
  • Type – transmissive, absorptive
  • Lower contrast
  • Low absorption
  • Large sizes available

Applications

  • Multi Stage Filters
  • Projection System Clean-Up Polarizer
  • HUD’s – Heads Up Display

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 400nm – 700nm
Contrast Ratio 300:1, nominal
Maximum Dimension 1000mm x 620mm
Thickness 0.190mm
Film Cutting Tolerances ± 50 microns
Adhesive (PSA) None, PSA conversion on custom basis
Temperature Range -20° C to 70° C
Damage Threshold 1 W/cm2, CW
0.2 J/cm2 with 20 nsec pulse, visible
Color Neutral Gray
Substrate Plastic Type, “Cellulose Triacetate”, dichroic
Surface Quality 80/50 Scratch-Dig

Component Specifications

Outer Dimension 25.4mm ± 0.20mm
Wavefront Distortion Lambda/2 measured @ 632nm
Thickness 4.25mm± 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
Environmental Tolerance -10˚ C to 70˚ 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
VISIBLE BBAR COATING
  • R ≤ .65% per surface, avg.
  • Ultra broad range, 400nm to 900nm
  • 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
    OPTIONAL HEA BBAR COATING
  • R ≤ .65% per surface, avg.
  • Visible range, 425nm to 685nm
  • pdfView Corning Eagle 2000 Specs

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

    pdfView Acrylic Specs

    Glass
    BK-7 Transmission
    Corning Eagle Glass Transmission
    Coating
    BBAR 400nm-900nm, BK-7 Coating Scan
    HEA BBAR 425nm-685nm, Display Glass Coating Scan