China Suppliers MultiIR Short-Pass Filter - Factory Direct for Isolating Long Waves
| Product Name | Cut-off range (nm) | Cut-off depth | Transmission range (nm) | Transmission band transmittance | Spectrogram |
|---|---|---|---|---|---|
| LPF800 | 400-770 | >0D4 | 825-1200 | >85% average |
|
| LPF825 | 400-795 | >0D4 | 850-1200 | >85% average |
|
| LPF850 | 400-820 | >0D4 | 875-1200 | >85% average |
|
| LPF875 | 400-845 | >0D4 | 900-1200 | >85% average |
|
| LPF900 | 400-870 | >0D4 | 930-1200 | >85% average |
|
| LPF925 | 400-895 | >0D4 | 955-1200 | >85% average |
|
| LPF950 | 400-910 | >0D4 | 980-1200 | >85% average |
|
| LPF975 | 400-935 | >0D4 | 1010-1800 | >85% average |
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| LPF1000 | 400-960 | >0D4 | 1040-1800 | >85% average |
|
| LPF1025 | 400-985 | >0D4 | 1070-1800 | >85% average |
|
| LPF1050 | 400-1010 | >0D4 | 1100-1800 | >85% average |
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| LPF1075 | 400-1035 | >0D4 | 1130-1800 | >85% average |
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| LPF1100 | 400-1060 | >0D4 | 1160-1800 | >85% average |
|
| LPF400 | 200-375 | >0D4 | 420-1200 | >85% average |
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| LPF425 | 200-405 | >0D4 | 445-1200 | >85% average |
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| LPF450 | 200-430 | >0D4 | 470-1200 | >85% average |
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| LPF475 | 200-455 | >0D4 | 495-1200 | >85% average |
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| LPF500 | 200-480 | >0D4 | 520-1200 | >85% average |
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| LPF525 | 200-505 | >0D4 | 545-1200 | >85% average |
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| LPF550 | 200-530 | >0D4 | 575-1200 | >85% average |
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| LPF575 | 200-550 | >0D4 | 600-1200 | >85% average |
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| LPF600 | 200-570 | >0D4 | 625-1200 | >85% average |
|
| LPF625 | 200-595 | >0D4 | 650-1200 | >85% average |
|
| LPF650 | 200-620 | >0D4 | 675-1200 | >85% average |
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| LPF675 | 200-645 | >0D4 | 700-1200 | >85% average |
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| LPF700 | 200-670 | >0D4 | 725-1200 | >85% average |
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| LPF725 | 200-695 | >0D4 | 750-1200 | >85% average |
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| LPF750 | 200-720 | >0D4 | 775-1200 | >85% average |
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| LPF775 | 200-745 | >0D4 | 800-1200 | >85% average |
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1. What is a Longpass Filter (LPF)?
A longpass filter is an optical optical element that attenuates shorter wavelengths (cut-off range) and transmits longer wavelengths (transmission range) with high efficiency.
2. What does the "Cut-off depth >OD4" indicate?
OD4 (Optical Density 4) means that the transmission of light within the cut-off range is blocked down to 0.01% or less, providing excellent signal-to-noise ratios for precision applications.
3. Can I request custom sizes or custom cut-off wavelengths?
Yes, we provide customization options for dimensions, thickness, substrate materials, and specific spectral performance characteristics to meet your unique requirements.
4. What is the average transmission rate of these stock filters?
Our stock longpass filters (LPF series) feature a high average transmittance of over 85% in their designated transmission bands.
5. Are these filters suitable for infrared (IR) applications?
Yes, several models in our catalog (such as LPF975 through LPF1100) extend their transmission ranges up to 1800 nm, making them ideal for Near-Infrared (NIR) optical systems.