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| Categories | Optical Interference Filter | 
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| Brand Name: | Wuhan Siwer Optics.,Ltd | 
| Model Number: | Custom | 
| Place of Origin: | Wuhan,China | 
| MOQ: | 5 pieces | 
| Price: | 2-29USD/piece | 
| Payment Terms: | T/T, Western Union | 
| Supply Ability: | 20000 pieces/month | 
| Delivery Time: | 1-3 weeks | 
| Packaging Details: | 1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler | 
| Material: | Fused Silca,B270,BK7,etc. | 
| Size tolerance: | +/-0.1mm | 
| Chamfer: | 0.2-0.5mm | 
| Surface quality: | 40/20 | 
| Surface flatness: | Lambda/4 in 25.4mm | 
| Parallelism: | 2 arc min | 
| Size range: | 2-100mm | 
| Usage: | Optical system | 
| Company Info. | 
| Wuhan Siwer Optics Co.,Ltd | 
| View Contact Details | 
| Product List | 
Longpass Filters are commonly used to isolate portions of the spectrum in a variety of industrial or life sciences applications including microscopy or fluorescence instrumentation. Longpass Filters are typically designed for a 0° Angle of Incidence, whereas Longpass Dichroic Filters are designed for use at a 45° Angle of Incidence.
| Clear Aperture | >90% | 
| Thickness | <10mm | 
| CWL Tolerance | ±2nm | 
| FWHM | 10±2nm | 
| Peak Transmission | >45% | 
| Block | <0.1%@200-1100nm | 
| CWL Shift | <0.02nm/℃ | 

We not only provide a number of standard filters, but also customize filters according to your requirements.Please contact our sales for information about the filters in stock.
| Item | Size(mm) | Unit price(USD) | 
| 850nm Narrow band pass filter | Φ4.2*1.1 | 10 | 
| Φ4.5*0.55 | 10 | |
| Φ6*2 | 10 | |
| Φ8*0.55 | 4 | |
| Φ8*1.1 | 4 | |
| Φ10.4*1 | 5 | |
| Φ14*1 | 10 | |
| Φ15*1.1 | 10 | |
| Φ17*0.7 | 14 | |
| Φ20*0.55 | 14 | |
| Φ23*1.1 | 21 | |
| Φ25*0.55 | 14 | |
| Φ27*1.2 | 26 | |
| Φ29*1.7 | 26 | |
| Φ34*1 | 51 | |
| Φ37.5*1.2 | 26 | |
| 4.5*4.5*0.55 | 3 | |
| 6.2*6.2*0.5 | 3 | |
| 7*2*1 | 10 | |
| 8.2*8.2*0.55 | 4 | |
| 8.5*2*1 | 10 | |
| 10*10*0.55 | 5 | |
| 10*7.5*0.55 | 8 | |
| 14*14*1.1 | 8 | |
| 14*7*1.1 | 8 | |
| 16.9*16.9*1 | 21 | |
| 17*17*0.55 | 21 | |
| 17.8*17.8*0.55 | 21 | |
| 15.5*8*1.1 | 21 | |
| 23.5*15.6*1.1 | 21 | |
| 27*20*0.6 | 26 | |
| 30.5*23*0.6 | 26 | |
| 35*2*1 | 21 | |
| 37*8.2*0.55 | 14 | |
| 57*9*1.8 | 21 | |
| 80*14*1 | 51 | |
| 86*86*0.55 | 103 | |
| 8.2*8.2*1 | 7 | |
| 14*14*1 | 14 | |
| Item | Size(mm) | Unit price(USD) | 
| 450nm narrow band pass filter | Φ3.5*1 | 14 | 
| Φ5*1.5 | 10 | |
| Φ6.5*1.7 | 14 | |
| Φ8*1.1 | 17 | |
| Φ11.5*1.5 | 21 | |
| Φ15*1.5 | 21 | |
| Φ25*1.5 | 21 | |
| Φ30*1.5 | 21 | |
| Φ35*1.4 | 48 | |
| Φ36*1.5 | 48 | |
| Φ39*1.6 | 69 | |
| Φ45*1 | 86 | |
| Φ50*1.8 | 103 | |
| Φ51*1.5 | 103 | |
| 10*5*1.65 | 17 | |
| 14*14*1.1 | 21 | |
| 14*7.5*1.1 | 21 | |
| 14*8.1*1.1 | 21 | |
| 16.5*16.5*1.1 | 21 | |
| 18*18*1.7 | 21 | |
| 19.5*16.8*1.5 | 21 | |
| 30*5*1.1 | 21 | |
| 38*20*1.1 | 34 | |
| 39*23*2.2 | 48 | |
| Item | Size(mm) | Unit price(USD) | 
| 625-665nm band pass filter | 4.8*2.6*1 | 10 | 
| 6*4.6*1 | 3 | |
| 5*5*1.2 | 10 | |
| 6.5*6.5*1 | 3 | |
| 9*9*1 | 3 | |
| 10*10*1 | 10 | |
| 6*6*1 | 3 | |
| 9*9*1 | 3 | |
| 16*16*1.7 | 14 | |
| 16.5*16.5*1.1 | 21 | |
| 25*14*1.1 | 21 | |
| 30*30*1.7 | 21 | |
| Φ6*1 | 3 | |
| Φ8*1 | 3 | |
| Φ12*1.1 | 12 | |
| Φ16*1.1 | 12 | |
| Φ20*1.1 | 12 | |
| Φ24*1 | 14 | |
| Φ25*1.1 | 14 | |
| Φ26*1.1 | 14 | |
| Φ29*1.2 | 14 | |
| Φ30*1.1 | 14 | |
| Φ39*1.1 | 34 | |
| 600-750nm band pass filter | Φ21.5*2.3mm | 21 | 
| Φ27.5*2.3mm | 21 | |
| 600-480nm band pass filter | 7.65*7.65*0.7mm | 14 | 
| 420nm-620nm&850nm band pass filter | Φ8*0.55mm | 3 | 
| 10*10*0.55mm | 4 | |
| 30*30*1.1mm | 7 | |
| 697nm narrow band pass filter | Φ20*1.75mm | 26 | 
| 400-950nm band pass filter | 40*10*1.1mm | 21 | 
| 820-1100nm band pass filter | 40*10*1.6mm | 21 | 
| 970nm narrow bandpass filter | Φ19*0.7mm | 21 | 
| Item | Size(mm) | Unit price(USD) | 
| 520nm narrow bandpass filter | Φ14*1.1mm | 21 | 
| Φ16.5*1.6mm | 21 | |
| Φ24*1.1mm | 21 | |
| Φ25*1.7mm | 21 | |
| Φ30*1.1mm | 26 | |
| Φ39*1.1mm | 71 | |
| 8*8*1.1mm | 18 | |
| 20*20*1.2mm | 21 | |
| Item | Size(mm) | Unit price(USD) | 
| 689-725nm bandpass filter | Φ39*1.8mm | 49 | 
| 563nm narrow bandpass filter | 80*20*1mm | 49 | 
| 680-760 bandpass filter | Φ29.5*2.2mm | 21 | 
| Φ12*1.8mm | 18 | |
| Φ7*2.3mm | 14 | |
| 80*8.5*1.7mm | 26 | |
| Item | Size(mm) | Unit price(USD) | 
| 760-850nm bandpass filter | Φ8*1.2mm | 14 | 
| 14*14*1.1 | 21 | |
| Item | Size(mm) | Unit price(USD) | 
| 940nm narrow bandpass filter | Φ8*0.7mm | 7 | 
| Φ10*0.55mm | 14 | |
| Φ12*1.1mm | 14 | |
| Φ15*1mm | 21 | |
| Φ22*1.1mm | 21 | |
| Φ25*1.1mm | 26 | |
| Φ28*1.1mm | 26 | |
| Φ36*1.3mm | 71 | |
| Φ39*1.5mm | 71 | |
| 10*10*0.7mm | 7 | |
| 14*6*0.6mm | 18 | |
| 14*14*0.6mm | 21 | |
| 500-550nm bandpass filter | 4.8*2.6*0.7mm | 7 | 
| 6*6*1.1mm | 14 | |
| 8*8*1.65mm | 14 | |
| 11.3*1.6*1.55mm | 14 | |
| 70*20*2.5mm | 35 | |
| Φ20*2mm | 21 | |
| Φ27*1.45mm | 21 | |
| Φ36*2.45mm | 26 | |
| 450-1100nm longpass filter | Φ25*1.1mm | 21 | 
| Φ35*1.3mm | 49 | |
| 420-480nm bandpass filter | 6*6*1.7mm | 14 | 
| 18*18*1.6mm | 18 | |
| Φ30*1.46mm | 21 | |
| 80*39*2.3mm | 71 | |
| 80*10*1.65mm | 18 | |
| Φ8*1.7mm | 14 | |
| 10*10*2mm | 18 | |
| Φ12.5*1.5mm | 18 | |
| Φ35*1.6mm | 35 | 


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