1.Product Descriptions:
| Characteristics: | 405nm Bandpass Filter |
| Type: | Bandpass Filter |
| Central Wavelength (CWL): | 405+-5nm |
| Full Width at Half Maximum(FWHM): | 10/30nm |
| Peak Transmittance(%) : | BP405-10nm:>90% BP405-30nm:>85% |
| Surface Quality: | 60/40 scratch-dig |
| Optical Density (OD): | OD2-OD3 |
| Color: | Violet-Blue |
| Shape： | Square, Round, Irregular Shape |
| 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 – 405nm Bandpass filter:
 |
| Picture 1: BP405-10nm Graph measurement |
 |
| Picture 1: BP405-30nm Spectral Graph measurement |
3.What is typical application for 405nm bandpass filters?
A 405nm bandpass filter is an optical device that selectively transmits light centered at the 405nm wavelength in the violet-blue region of the spectrum, while blocking light at all other wavelengths. Typical application for 405nm bandpass filters are very broad, including 405nm laser imaging and laser calibration equipment, biochemical fluorescence detection, fluorescence microscopes, UV curing monitoring, UV ink printing inspection, Industrial flaw detection, particle optical sensing, spectroscopic analysis and biochemical diagnostic instruments.
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.
