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BVO 1000
BVO 1000 Linear Polarizer
Active Range: 400 nm – 1,600 nm | Ultra-Broadband VIS / NIR / SWIR Hybrid | Single Element
400–1600 nm
16,341:1 VIS Contrast
65–81% Tp
Single Element
Absorptive Hybrid
BVO 1000 is an ultra-broadband VIS/NIR/SWIR hybrid linear polarizer covering 400 nm to 1,600 nm in a single optical element — the most complete single-element broadband coverage in the BVO linear polarizer line. Designed for system architects who need a single polarizer across the full visible and extended NIR/SWIR band without the cost or complexity of stacking multiple elements. High single-pass transmission (65–81%) across the full range, with exceptional visible contrast averaging 16,341:1 from 400–700 nm.
400–1600 nm
Full Active Range
16,341:1
Avg VIS Contrast (400–700 nm)
~72%
Avg Tp Across Full Range
BVO 1000 Linear Polarizer — Transmission Performance
Input Light: Plane Polarized | Active Range: 400–1600 nm | Tc calculated from Tp / Contrast Ratio
Key Features
- Ultra-broadband: 400 nm to 1,600 nm — single element covers full VIS, NIR, and partial SWIR
- Eliminates multiple polarizers in broadband multispectral and hyperspectral systems
- 16,341:1 average contrast in visible band (400–700 nm)
- 7,381:1 average contrast in NIR (700–1000 nm)
- 1,674:1 average contrast in SWIR extension (1000–1600 nm)
- High Tp: 65–81% maintained across the full 400–1600 nm range
- Absorptive hybrid construction — no back-reflection artifacts
- PSA conversion available for direct lamination to optical surfaces
- BBAR anti-reflection coated BK-7 glass components available
- Custom geometry — .dxf routing or laser cutting to 10–25 micron tolerances
- Works as a 50/50 beamsplitter at 45° AOI in some configurations
Performance
BVO 1000 covers three distinct spectral regions in one element. In the visible (400–700 nm), it delivers exceptional contrast averaging 16,341:1 — comparable to dedicated visible polarizers — with Tp rising from 39% at 400 nm to a plateau of 68–69% through the visible band. In the NIR (700–1000 nm), Tp continues rising to ~77% while contrast remains solid at 7,381:1 average. Above 1000 nm into the SWIR, Tp reaches 78–81% at high transmission with contrast settling to ~1,674:1 — lower than the VIS/NIR but sufficient for many SWIR applications.
The contrast transition at 850–1000 nm reflects the handoff between the visible and NIR absorbing systems in the hybrid construction. This zone shows rising Tc as the visible dye system rolls off before the SWIR characteristic stabilizes.
Key Wavelength Data
| Wavelength | Tp (%) | Tc (%) | Contrast | Band |
|---|
| 400 nm | 38.9% | 0.013% | 2,976:1 | Visible — rising |
| 450 nm | 61.0% | 0.006% | 11,153:1 | Visible — good contrast |
| 550 nm | 68.8% | 0.003% | 22,542:1 | Visible — peak contrast |
| 700 nm | 69.2% | 0.004% | 19,537:1 | VIS/NIR — excellent |
| 750 nm | 70.0% | 0.004% | 16,613:1 | NIR — excellent contrast |
| 800 nm | 71.1% | 0.007% | 10,355:1 | NIR — good contrast |
| 850 nm | 73.1% | 0.019% | 3,779:1 | NIR — transition zone |
| 900 nm | 75.3% | 0.038% | 2,007:1 | NIR — Tc rising |
| 1000 nm | 77.1% | 0.038% | 2,028:1 | NIR/SWIR boundary |
| 1100 nm | 78.6% | 0.050% | 1,586:1 | SWIR — stable |
| 1300 nm | 80.3% | 0.048% | 1,689:1 | SWIR — stable |
| 1500 nm | 78.2% | 0.047% | 1,678:1 | SWIR — stable |
| 1600 nm | 81.2% | 0.045% | 1,805:1 | SWIR — upper range |
Standard Specifications
| Parameter | Value |
|---|
| Performance Range | 400 nm – 1,600 nm |
| Contrast VIS avg (400–700 nm) | 16,341:1 |
| Contrast NIR avg (700–1000 nm) | 7,381:1 |
| Contrast SWIR avg (1000–1600 nm) | 1,674:1 |
| Avg Tp | ~72% across 400–1600 nm |
| Polarizer Type | Transmissive, absorptive, hybrid dichroic |
| Film Cut Tolerances | ±50 microns standard; 10–25 microns precision |
| Adhesive (PSA) | None standard; PSA conversion available |
| Glass Components | BK-7 available — contact BVO for BBAR coating options |
| Custom Geometry | .dxf routing or laser cutting available |
Applications
Multispectral & Hyperspectral ImagingSingle polarizer from 400–1600 nm eliminates multiple elements in broadband hyperspectral cameras and imaging systems.
Broadband PolarimetryStokes polarimetry and Mueller matrix measurements spanning VIS through NIR/SWIR in a single optical element.
NIR Machine VisionBroadband VIS+NIR glare reduction for machine vision systems. High Tp (65–77%) maintains throughput across the full band.
Beamsplitter ApplicationsWorks as a 50/50 beamsplitter in some 45° AOI configurations across the 400–1600 nm band.
Food & Agriculture InspectionSingle polarizer for broadband VIS through NIR/SWIR food inspection systems — moisture, defect detection, sorting.
Defense & Airborne ImagingUltra-broadband polarization for airborne multispectral imaging systems covering the full VIS and NIR/SWIR bands.
Scientific InstrumentationBroadband research instrumentation requiring polarization across VIS, NIR, and into the SWIR in a single element.
NIR Camera SystemsBroadband NIR camera polarization from 400–1600 nm — no need to switch polarizers across spectral sub-bands.
Contact Bolder Vision Optik
