BVO 777 Polarizer
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.
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
Film Specifications
Polarizer Range
420nm – 800nm
Contrast Ratio
> 5,000:1, nominal
Maximum Dimension
450mm x 300mm
Thickness
.44mm
Film Cutting Tolerances
± 50 microns
Adhesive (PSA)
None, PSA option available
Temperature Range
-20° C to 60° C
Damage Threshold
1 W/cm2, CW
0.2 J/cm2 with 20 nsec pulse, visibleColor
Neutral Gray
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 ≤ .65% / surface, average. 400nm-900nm
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
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 HEA BBAR COATING
R ≤ .65% per surface, avg.
Visible range, 425nm to 685nm
Acrylic
No residual birefringence
Cheapest option for laminated products
Digitally 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
商品属性 [Polarizer Range] 420nm – 800nm [Contrast Ratio] > 5,000:1, nominal [Maximum Dimension] 450mm x 300mm [Thickness] .44mm