1.Product Descriptions:
| Characteristics: | 470nm Bandpass Filter |
| Type: | Bandpass Filter |
| Central Wavelength (CWL): | 470+-5nm |
| Full Width at Half Maximum(FWHM): | 20/25/30/40nm |
| Peak Transmittance(%) : | BP470-20nm:>70% BP470-25nm:>85% BP470-30nm:>88% BP470-40nm:>85% |
| Cut-off depth: | OD2-OD3 |
| Shape: | Square, Round, Irregular Shape |
| Color: | Blue |
| Surface Quality: | 60/40 scratch-dig or specified |
| Dimension(mm): | specified** |
| Thickness(mm): | specified*** |
| Substrate: | Optical Glass |
| Remark: Spectral range:350-1100nm *Customized capability: 380-2500nm, stock for 10nm intervals. **Common for 86x86mm, 80x80mm, other can customized, max. 300x300mm *** Thickness available: 0.21、0.3、0.55、0.7、1.0、1.1、1.5、1.8、2.0、3.0mm, etc. | |
2.Measured Spectral Graph – 470nm Bandpass filter:
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| Picture 1: Blue Glass Substrate 470-20nm Bandpass Filter Spectral Graph measurement |
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| Picture 2: BP470-25nm Spectral Graph measurement |
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| Picture 3: BP470-30nm Spectral Graph measurement |
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| Picture 4: 470-40nm Spectral Graph measurement |
3.What is typical application for 470nm Bandpass Filters with a blue glass substrate?
A 470nm Bandpass Filters with a blue glass substrate is an optical device designed to transmit only a narrow band of light centered at 470nm, while blocking all other wavelengths. Typical application for 470nm bandpass filters are very broad, including fluorescence microscopy, biomedical & chemical analysis, machine vision, laser & LED line cleanup.
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.
