BVO IR Polarizer
BVO IR (700nm-1,600nm) covers the near infrared polarizer bandwidth. Modern NIR applications often require polarized light for fiber optics, imaging or solid state sensing. Use BVO IR as a solution to polarize incoming light, increase contrast or reduce glare in the near infrared up to 1,600nm.
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
Applications
- 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
OEM Volume – Custom Specs Reduced Cost
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 |
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
