1.Product Descriptions：
| Characteristics: | 460nm Bandpass Filter |
| Type: | Interference type |
| Central Wavelength (CWL): | 460+-5nm |
| Full Width at Half Maximum(FWHM): | 60nm |
| Peak Transmittance(%) : | >92% |
| Optical Density(OD): | OD2 |
| Shape: | customized |
| Color: | Dark blue |
| Surface Quality: | 60/40 |
| Dimension(mm): | Common for 86x86mm, 80x80mm, other can customized, max. 300x300mm |
| Thickness(mm): | 0.21、0.3、0.55、0.7、1.0、1.1、1.5、1.8、2.0、3.0mm, etc. |
| Substrate: | Ultra-clear glass,K9,BK7,B270,D2637T, Quartz Glass(Fused Silica) or other specified. |
| Remark: Spectral range:350-1100nm. | |
2.Measured Spectral Graph:
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| Picture 1: BP460-60nm Bandpass Filter with AR+AF Coating Graph measurement |
3.What is typical application for 457nm Bandpass Filters?
Typically, the 457nm bandpass filter is used for isolating deep-blue fluorescence signals, particularly in fluorescence microscopy for imaging blue fluorescent proteins and in flow cytometry for multi-color analysis. Besides, They are also widely used in laser line cleanup for lasers, biomedical diagnostics, DNA sequencing, and machine vision for enhancing blue object contrast.
4.What are key parameters when choose for a suitable 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.
Related products:
450nm Bandpass Filter, 450nm CWL, 30/45/50nm FWHM, Support Customized
Shenzhen Hengda Liyuan Optoelectronics introduced advanced optical vacuum 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, Liyuan optoelectronics have been focus on optical coating for more than 17 years ,and the company offer one-stop optical filters solution including Narrow Bandpass Filters, IR cut-off Filters, Longpass Filters, Shortpass Filters, Notch Filters, ND filters, Star filters and Optical sapphire block.
Remark：The appearance color of the optical filter is usually determined by the spectral parameters, the interference type filter varies at different angles, and the pictures in this link may have been taken from different angles, so the actual color should be based on the final spectral parameters required！
