Product Descriptions:
| Characteristics: | 555nm Narrow Bandpass Filter |
| Type: | Interference type filter |
| Central Wavelength (CWL): | 555nm |
| Full Width at Half Maximum(FWHM): | 20nm |
| Peak Transmittance(%) : | >88% |
| Optical Density: | OD2-OD3 |
| Shape: | Square, Round or customized |
| Angle of Incidence (AOI): | 0° |
| Surface Quality: | 60/40 or specified |
| Dimension(mm): | Specified* |
| Thickness(mm): | Specified** |
| Substrate material: | Optical Glass or specified*** |
| Remark: Spectral range:350-1100nm*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.***Ultra-clear glass,BK7,K9,B270,D2637T, Quartz Glass or other specified.Note:Above product parameters are for sample reference only. Actual product parameters shall be subject to the final agreement between both parties. |
Measured Spectral Graph – 555nm Narrow Bandpass Filter:
 |
| Picture 1: BP555-20nm Spectral Graph measurement |
What is typical application for 555nm Narrow Bandpass Filter?
A 555nm narrow bandpass filter is an optical component to transmit light centered at 555nm yellow green light while blocking light at other wavelengths. Accordingly,It finds use in fluorescence microscopy and flow cytometry for imaging and analysis, also at machine vision and color imaging analysis in automated production devices, and additionally spectroscopy in industrial and analytical settings.
What are key parameters when choose for a suitable Narrow Bandpass Filter?
When selecting a Narrow Bandpass Filter, normally the following factors need to be taken into consideration：
- Central Wavelength (CWL)：CWL is one of key parameter to designate first, it refer to the central wavelength at stable high transmission rate passband.
- Peak or Average Transmittance: typically ≥90%, Higher transmittance might need Anti-reflective(AR) coating.
- Full width at half maximum (FWHM): FWHM refer to the interval between the two wavelength points where the transmittance rate reaches 50%.
- Blocking rate: usually in terms of optical density(OD), OD2-OD3 for standard and higher will be OD4-OD6 per requirement.
- Angle of Incidence (AOI): AOI need to be considered as Interference Filter is angle sensitive, 0° AOI by default, other AOI e.g. 30/45° need to be specified.
- Physical and environmental requirement：Substrate type, dimensions and thickness, surface quality, and environmental durability.
The company introduced advanced optical coating technology that apply depositing nano-materials 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. Besides,The company 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.
