Product Descriptions:
| Characteristics: | 730nm Bandpass Filter |
| Type: | Interference type Filter |
| Central Wavelength (CWL): | 730+-5nm |
| Full Width at Half Maximum(FWHM): | 40nm |
| Peak Transmittance(%) : | >92% |
| Cut-off depth: | OD2 |
| Shape: | Round, Square or customized. |
| Color: | Dark red |
| 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: | 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 – 730nm Bandpass filter:
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| Picture 1: BP730-40nm Spectral Graph measurement |
What is typical application for 730nm Bandpass Filters?
A 730nm bandpass filter is an optical filter that allows near infrared light centered at 730nm to pass through while blocking light outside that range. Typically, A 730nm bandpass filters are used in Flow cytometry for single-point fluorescence detection. Additionaly, in scientific instrumentation for laser line isolation and analytical chemistry. lastly, in industrial settings for enabling reliable near-infrared imaging, reflectance sensing and machine vision.
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, and it refer to the central wavelength at stable high transmission rate passband.
- Peak or Average Transmittance(%): typically, Tp≥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 define as Interference Filter is angle sensitive. normally, 0° AOI by default, and 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:
700nm Bandpass Filter, 700nm CWL, 45nm 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.
