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China Suppliers Multi IR Dual-Channel Filter (BP+BP) – High Accuracy and Performance from Factory
| Product Name | CWL1 (nm) | HPB (nm) | CWL2 (nm) | HPB (nm) | Tp (%) | Size (mm) | Sub Material | Blocking | Tavg | Spectrogram |
|---|---|---|---|---|---|---|---|---|---|---|
| BP2000+BP3200 | 2000 | 325 | 3200 | 175 | ≥70 | Φ0.1~300 | Quartz | 1000~5000 | - |
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| BP3070+BP3960 | 3070 | 60 | 3960 | 80 | ≥80 | Φ0.1~300 | Si | 400~11000 | <1 |
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| BP3070+BP3980 | 3070 | 60 | 3980 | 80 | ≥70 | Φ0.1~300 | Si | 400~11000 | <1 |
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| BP3100+BP4010 | 3100 | 90 | 4010 | 130 | ≥75 | Φ0.1~300 | Si | 400~11000 | - |
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| BP3140+BP4050 | 3140 | 90 | 4050 | 130 | ≥65 | Φ0.1~300 | Si | 400~11000 | - |
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The above list shows our current stock items.
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If you don't see what you are looking for, please contact us.
❓ Frequently Asked Questions
Q: What substrates are used for these dual-band bandpass filters?
Our standard stock items utilize high-quality Quartz and Silicon (Si) substrates, selected to optimize optical performance and durability depending on the targeted spectral range.
Q: What do CWL and HPB stand for in the specifications table?
CWL stands for Center Wavelength, which is the central peak of the passband. HPB stands for Half Peak Bandwidth (also referred to as Full Width at Half Maximum, FWHM), defining the width of the spectral band at 50% of maximum transmission.
Q: Can I request custom sizes or dimensions for these optical filters?
Yes, we support custom fabrication. While our standard stock sizes range from Φ0.1 to 300 mm, we can cut, shape, and coat filters to match your precise mechanical and optical specifications.
Q: What is the typical blocking range (out-of-band rejection) for these filters?
The blocking range varies by model. For instance, our Silicon-substrate filters (like the BP3070 series) offer a wide out-of-band blocking range from 400 nm to 11000 nm to ensure high signal-to-noise ratios.
Q: How do I obtain detailed transmission curves or spectrogram data?
You can view the spectrogram preview directly in the product table. For high-resolution files or customized measurement reports, please reach out to us using our contact form.