1.Product Descriptions:
| Characteristics: | 650nm Bandpass Filter |
| Type: | Bandpass Filter |
| Central Wavelength (CWL): | 650+-5nm |
| Full Width at Half Maximum(FWHM): | 10/20/40/45/60/80/100/300nm |
| Peak Transmittance(%) : | BP650-10nm:>85% BP650-20nm:>85% BP650-40nm:>90% BP650-45nm:>90% BP650-60nm:>92% BP650-80nm+AR:>92% BP650-100nm:>90% BP650-300nm:>90% |
| Cut-off depth: | OD2-OD3 |
| Shape: | Square, Round, Irregular Shape |
| Color: | Red |
| Surface Quality: | 60/40 scratch-dig or specified |
| Dimension(mm): | specified** |
| Thickness(mm): | specified*** |
| Substrate: | Ultra-clear glass,K9,BK7,B270,D2637T, Quartz Glass(Fused Silica) or other specified. |
| Remark: Spectral range:350-1100nm *Customized capability: 380-2500nm, stock for 10nm intervals. **Common for 86x86mm, 80x80mm, other can customized, max. 300x300mm | |
2.Measured Spectral Graph – 650nm Bandpass filter:
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| Picture 1: BP650-10nm Spectral Graph measurement |
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| Picture 2: BP650-20nm Spectral Graph measurement |
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| Picture 3: BP650-40nm Spectral Graph measurement |
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| Picture 4: BP650-45nm Spectral Graph measurement |
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| Picture 5: BP650-60nm Spectral Graph measurement |
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| Picture 6: BP650-80nm+AR Spectral Graph measurement |
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| Picture 7: BP650-100nm Spectral Graph measurement |
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| Picture 8: BP650-300nm Spectral Graph measurement |
3.What is typical application for 650nm bandpass filters?
650nm bandpass filters are optical devices designed to transmit light primarily at a 650nm wavelength while blocking light at all other wavelengths. Typical application for 650nm bandpass filters are in fluorescence microscopy and flow cytometry. They are also essential in laser-based pointers, barcode scanners, and optical sensing systems, ensuring precise wavelength selection while blocking unwanted background light for enhanced signal-to-noise performance.
4.What is key parameter when choose for right bandpass filter?
When selecting a bandpass filters, the center wavelength (CWL) will be one of key parameter to be designated, it refer to the wavelength at which the filter achieves maximum transmission. Secondly, Peak and Average Transmittance, typically ≥80–95%, higher transmittance might need Anti-reflective(AR) coating. Third, full width at half maximum (FWHM). Forth, Blocking Range & Depth. Fifth, substrate material, e.g., BK7, B270, fused silica, colored glass. Sixth, surface quality, e.g., 60/40, 40/20. Seventh, Size & Shape, etc.
Shenzhen Hengda Liyuan Optoelectronics introduced advanced optical technology that apply depositing nanomaterials through ion-assisted evaporation onto a multilayer hard film in a high vacuum environment which coating layer is firm and has good tightness, and small bandwidth drift. Liyuan optoelectronics have been focus on optical coating for more than 17 years and offer one-stop optical filters solution including Narrow Bandpass Filters, IR cut-off Filters, Longpass & Short Filters, Notch Filters, ND filters, Star filters and Optical sapphire block.
Other typical Bandpass filters in stock from Liyuan Optoelectronics include BP810 BP820 BP830 BP840 BP850 BP860 BP870 BP880 BP890 BP…etc.
