1.Product Descriptions:
| Characteristics: | 450nm Bandpass Filter |
| Type: | Bandpass Filter |
| Central Wavelength (CWL): | 450+-5nm |
| Full Width at Half Maximum(FWHM): | 30nm/45/50nm |
| Peak Transmittance(%) : | BP450-30nm:>88% BP450-45nm:>88% BP450-50nm:>92% |
| 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: | 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 *** 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 – 450nm Bandpass filter:
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| Picture 1: BP450-30nm Spectral Graph measurement |
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| Picture 2: BP450-45nm Spectral Graph measurement |
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| Picture 3: BP450-50nm Spectral Graph measurement |
3.What is typical application for 450nm Bandpass Filters?
The 450nm bandpass filter is a precision optical component that selectively transmits blue light centered around 450nm, while effectively blocking all other wavelengths outside this passband. Typical application for 450nm Bandpass Filters are very broad, include fluorescence microscopy, blue light detection & biomedical imaging, environmental water quality optical testing, machine vision blue light inspection, spectroscopy, color measurement instruments.
4.What is key parameter when choose for right bandpass filter?
When selecting a bandpass filters, the center wavelength 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 coating. Third, full width at half maximum. 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.
