BVO NIR Polarizer
All new, purely absorptive NIR linear polarizer available in large 1 meter lengths. The new BVO NIR polarizer also extends down to 550nm offering a combination of visible and NIR polarization. Large format size allows large panel laminations for NIR polarized lighting illuminators in machine vision systems, volume custom sensor applications and biotech components using the visible / NIR bandwidths.
VISIBLE / NIR ABSORPTIVE LINEAR POLARIZER
- Active Range: 550nm – 950nm
- Hybrid Visible / NIR polarizer
- Type – transmissive, absorptive
- Large sheet format – 1000mm x 620mm
- Polarize all 730nm – 940nm LED’s and laser diodes
- Dyestuff option available, resists burn in
- Imaging capable
- BBAR coated glass components available
BVO NIR polarizer options
- BVO NIR DS – Dyestuff high durability, high transmission polarizer
- BVO NIR DS2 – Dyestuff high durability, high contrast polarizer
Applications
- Surveillance
- Retroreflective Sensors
- Defect Identification for Sorting
- Machine Vision Imaging – Glare Reduction
- NIR Sensors – Optical, Solid State
- LIDAR
- NIR Cameras
- Polarized Raman Spectroscopy
- Multispectral Imaging
- License Plate Scanning
- Biometrics Polarization
- NIR Polarized Microscopy
Downloads
Volume NIR polarizer wafer slicing on chosen substrate available
OEM Specs – Custom prototypes and volume at reduced cost
Precision NIR Polarizers – AR coated glass laminated components
Film Specifications
| Polarizer Range | 550nm-950nm |
| Contrast Ratio Visible | 5,000:1, nominal |
| Contrast Ratio NIR | 3,000:1, nominal |
| Maximum Dimension | 1000mm x 620mm |
| Thickness | .419mm |
| Film Cutting Tolerances | ± 50 microns |
| Adhesive (PSA) | Yes, high durability type PSA No PSA, optional |
| Temperature Range | -20° C to 80° 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 OD ± 0.20mm |
| Wavefront Distortion | Lambda/2 measured @ 632nm |
| Thickness | 6.5mm, ± 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-950nm |
| Environmental Tolerance | -10° C to 60° C |
Optional Lamination Substrates :
Optical Grade BK-7
Low Wavefront Distortion Glass
- Industry standard optics glass
- Good transmission visible and NIR
- Best for low wavefront distortion
- Thickness flexibility
- Double side polished, lambda/10 flatness
- Refractive index – 1.52
BK-7 Glass Transmission Chart
Bk-7 Optional NIR BBAR COATING
- R ≤ .65% per surface, avg.
- Ultra broad range, 400nm to 950nm
400-950nm BBAR on BK-7 scan – typical
Corning Display Glass
Results in thin final components
- Thin glass, excellent clarity
- No residual birefringence
- Imaging quality flatness
- No added heavy metals
- 0.5, 0.7mm, 1.1mm options for thickness
- Refractive index – 1.50
Corning Glass Transmission Chart
Eagle XG Optional NIR BBAR COATING
- R ≤ .65% per surface, avg.
- Ultra broad range, 400nm to 950nm
400-950nm BBAR on Eagle XG scan – typical
Non-Birefringent Acrylic
Inexpensive Complex Shapes
- No residual birefringence substrate
- Cheapest option for laminated products
- Digitally cut for all geometric shapes
- Thin flexible substrate (bends)
- 0.2mm – 5.0mm options for thickness
- Refractive index – 1.49
Non-birefringent acrylic transmission chart
