BVO IR Linear Polarizer Family

700 – 1,700 nm

The broadband NIR/IR workhorse. Covers all NIR imaging and solid-state instrument applications from 700–1700 nm. Imaging capable. Replaces 3M HR polarizer.

Contrast Ratio

3,000:1 nominal

Peak Tp

~69% at 1000 nm

Max Format

60 × 55 mm

Full Specs →

Contact BVO

Ultra-Broadband SWIR

400 – 2,100 nm

Ultra-broadband single element covering full VIS, NIR, and SWIR. Peak contrast >153,000:1 at 900 nm. Covers the full InGaAs detector response band and beyond.

Peak Contrast

>153,000:1

CR >1000:1

437–2100 nm

Availability

Contact BVO

Full Specs →

Standard Catalog

VIS / NIR / SWIR Hybrid

400 – 1,600 nm

Ultra-broadband hybrid delivering exceptional visible contrast (16,341:1 avg) across VIS+NIR+SWIR in one element. ~72% avg Tp across the full range. Beamsplitter capable at 45° AOI.

VIS Contrast avg

16,341:1

NIR Contrast avg

7,381:1

Avg Tp

~72%

Full Specs →

Which IR Polarizer? — Application Selector

If your application is...	Choose	Why
NIR surveillance / security cameras	BVO IR	700–1700 nm, imaging capable, absorptive — standard NIR camera band
3M HR polarizer replacement	BVO IR	Direct drop-in replacement for discontinued 3M HR
NIR astronomy / scientific imaging	BVO IR	Imaging capable, absorptive, no back-reflection into detector
InGaAs camera polarization	BVO SWIR	Covers full InGaAs response band (900–1700 nm) and beyond to 2100 nm
SWIR hyperspectral imaging	BVO SWIR	Single element 400–2100 nm — no multiple polarizers across SWIR sub-bands
Maximum contrast at 600–950 nm	BVO SWIR	Peak >153,000:1 at 900 nm — extraordinary NIR extinction in this window
Plastics / polymer SWIR identification	BVO SWIR	Full SWIR coverage to 2100 nm for polymer spectral signatures
Broadband VIS + NIR single element	BVO 1000	400–1600 nm, 16,341:1 avg VIS contrast + NIR/SWIR extension in one polarizer
Multispectral / hyperspectral 400–1600 nm	BVO 1000	~72% avg Tp across full range — eliminates multiple polarizers
Beamsplitter at 45° AOI	BVO 1000	Works as 50/50 beamsplitter at 45° AOI across 400–1600 nm
NIR + SWIR, need SWIR beyond 1700 nm	BVO SWIR	Only BVO SWIR extends beyond 1700 nm — reaches 2100 nm

If your application is...

Choose

Why

NIR surveillance / security cameras

700–1700 nm, imaging capable, absorptive — standard NIR camera band

3M HR polarizer replacement

Direct drop-in replacement for discontinued 3M HR

NIR astronomy / scientific imaging

Imaging capable, absorptive, no back-reflection into detector

InGaAs camera polarization

Covers full InGaAs response band (900–1700 nm) and beyond to 2100 nm

SWIR hyperspectral imaging

Single element 400–2100 nm — no multiple polarizers across SWIR sub-bands

Maximum contrast at 600–950 nm

Peak >153,000:1 at 900 nm — extraordinary NIR extinction in this window

Plastics / polymer SWIR identification

Full SWIR coverage to 2100 nm for polymer spectral signatures

Broadband VIS + NIR single element

400–1600 nm, 16,341:1 avg VIS contrast + NIR/SWIR extension in one polarizer

Multispectral / hyperspectral 400–1600 nm

~72% avg Tp across full range — eliminates multiple polarizers

Beamsplitter at 45° AOI

Works as 50/50 beamsplitter at 45° AOI across 400–1600 nm

NIR + SWIR, need SWIR beyond 1700 nm

Only BVO SWIR extends beyond 1700 nm — reaches 2100 nm

Side-by-Side Comparison

Property	BVO IR	BVO SWIR	BVO 1000
Active range	700–1700 nm	400–2100 nm	400–1600 nm
VIS contrast (400–700 nm)	Not active	7,110:1 avg	16,341:1 avg
NIR contrast (700–1000 nm)	4,000–8,000:1	90,000:1+ peak	7,381:1 avg
SWIR contrast (1000–1700 nm)	2,000–7,000:1	2,000–5,000:1	1,674:1 avg
Beyond 1700 nm	—	Yes — to 2100 nm	—
Peak contrast	~8,000:1 at 1300 nm	>153,000:1 at 900 nm	22,542:1 at 550 nm
Avg Tp active range	~60–69%	~65%	~72%
Imaging capable	Yes	Yes	Yes
Beamsplitter at 45° AOI	—	—	Yes
Max film format	60 × 55 mm	Contact BVO	Contact BVO
3M HR replacement	Yes	—	—
Availability	Standard catalog	Contact BVO	Standard catalog

Property