Product Descriptions:
| Characteristics: | BP460nm+ LP650nm Dual band Filter |
| Type: | Interference type Filter |
| Central Wavelength(in nm): | 460nm, 650nm |
| Average Transmittance(%) : | >92% |
| Full Width at Half Maximum(FWHM): | 25nm |
| Optical Density (OD): | OD2 – OD3 |
| Shape: | Round, Square or customized. |
| Color: | Blue |
| Angle of Incidence(AOI): | 0° or customized |
| Surface Quality: | 60/40 scratch-dig |
| Dimension(mm): | 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 materials: | Ultra-clear glass,K9,BK7,B270,D2637T, Quartz Glass(Fused Silica) or other specified. |
| Remark: Support customized for wavelength from 200-2000nm. | |
Measured Spectral Graph
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| Picture 1: BP460nm+ LP650nm Dual band Filter spectral graph measurement |
What is typical application for BP460nm + LP650nm Dual band Filter？
Typically, the BP460nm + LP650nm dual-band filter is mainly on application for multi-color fluorescence imaging and flow cytometry, where it simultaneously captures blue light and near infrared light signals in a single optical path. Besides, this filter also for multispectral analysis, dual-wavelength illumination systems, and laser beam combining for biomedical and industrial inspection applications.
What is key parameter when choose for suitable Dual band Filter?
When selecting a Dual Bandpass Filter, normally the following factors need to be taken into consideration：
- Central Wavelength (CWL)：Firstly, CWL is one of key parameter to designate, it refer to the central wavelength at stable high transmission rate passband.
- Peak or Average Transmittance(in %): typically ≥90%, Higher transmittance might need Anti-reflective(AR) coating.
- Full width at half maximum (FWHM): it 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 blocking rate 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:
650&850nm Dual Bandpass Filter, 40nm FWHM,Day&Night Optical Filter
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.
