Visible / Near Infrared Dichroic Linear Polarizer
- Active Range: 420nm – 800nm
- Hybrid Visible / NIR polarizer
- Type – transmissive, absorptive
- Polarize 740nm, 780nm LED’s
- Polarize 785nm laser diodes
- Lowest cost visible / NIR coverage
- Imaging capable
- BBAR coated BK-7 components available
- Replaces 3M polarizer – HN 22
Applications
- Biotech Instruments
- Machine Vision Imaging – Glare Reduction
- NIR Sensors – Optical, Solid State
- NIR Cameras
- Magnetometers
- Vein Viewing Polarization Contrast
- Multispectral Imaging – Retina
- Agriculture Inspection
- Biometrics Polarization
- Polarized Microscopy
Spec Downloads
We Can Laser Cut Your Films
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BVO 777 | Performance
PRECISION 777 POLARIZER – GLASS LAMINATED COMPONENTS
OEM VOLUME – CUSTOM SPECS REDUCED COST
RAW 777 POLARIZER – LASER CUT TO SHAPE OR CUSTOM MOUNTED
BVO 777 is one of the cheapest imaging capable hybrid linear polarizers. It covers the important short NIR laser diode / LED lines of 740nm, 780nm and 785nm. Additionally, it has solid visible polarizer performance making it a good hybrid choice for imaging and all other applications. Consider BVO 777 linear polarizer if you need to cover near infrared and visible wavelengths at a minimum cost.
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BVO 777 | Film Specifications
Polarizer Range 420nm – 800nm Contrast Ratio > 5,000:1 nominal Maximum Dimension 450 mm x 300 mm Thickness 0.44 mm ± .02 mm Film Cutting Tolerances ± 0.15 mm (laser) Adhesive (PSA) No, PSA option available Temperature Range -20° C to 60° C Damage Threshold 1 W/cm squared, CW 0.2 J/cm squared with 20 nsec pulse, visible Color Neutral Gray Substrate Plastic Type, “Cellulose Triacetate”, dichroic Surface Quality 80/50 Scratch – Dig BVO 777 – Component Specifications
Outer Dimension 25.4mm OD,± 0.20mm Transmitted Wavelength Distortion Lambda/2 measured @ 632nm Thickness 4.5mm,± 0.20mm Substrates BK-7 , OEM options available Surface Quality 40/20 Scratch – Dig Beam Deviation 2 arc minutes Anti-reflection coatings R ≤ .65% / surface, average. 400nm-900nm Environmental Tolerance -10˚ C to 50˚ C -
BVO 777 | 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
Corning Display Glass
- Thin glass, excellent clarity
- No residual birefringence
- Imaging quality flatness
- Thin substrates – .7mm, 1.1mm each
- Refractive index – 1.50
- OPTIONAL BBAR COATING:
- R ≤ .65% per surface, avg.
- visible range, 425nm to 685nm
Cell Cast Acrylic
- No residual birefringence
- Cheapest option for laminated products
- Laser cut for all geometric shapes
- Thin substrates – flexible
- Refractive index – 1.49
Glass
BK-7 Transmission
Corning Eagle Glass Transmission
Coating
BBAR 400nm-900nm, BK-7 Coating Scan
HEA BBAR 425nm-685nm, Display Glass Coating Scan
