Product Descriptions:
| Characteristics: | 450+525+620nm triple bandpass filter |
| Type: | Interference type Filter |
| Central Wavelength (CWL): | 450nm ± 5nm, 525nm ± 5nm, 620nm ± 5nm |
| Full Width at Half Maximum(FWHM): | 20nm |
| Peak Transmittance(%) : | >90% |
| Optical Density (OD): | OD 2 – OD3 |
| Shape: | Round, Square, Custom Shape |
| Color: | Transparent |
| Angle of Incidence(AOI): | 0° |
| Surface Quality: | 60/40 scratch-dig |
| Dimension(mm): | Common for 86x86mm, 80x80mm, other can customized, max. 300x300mm |
| Thickness(mm): | Available: 0.21、0.3、0.55、0.7、1.0、1.1、1.5、1.8、2.0、3.0mm…etc. |
| Substrate: | Optical Glass |
| Remark：Spectral range from 350-1100nm. | |
Measured Spectral Graph
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| Picture 1: 450+525+620nm triple bandpass Filter spectral graph measurement |
What is the difference between a triple-bandpass filter and a single bandpass filter?
The core difference between a triple-bandpass filter and a single bandpass filter are that a standard bandpass filter focuses on a single specific spectral channel, while a triple-bandpass filter integrates three spectral channels into a single component.
What is typical application for 450+525+620nm triple-bandpass filters?
The 450+525+620nm triple-bandpass filter with AR coating is a precision optical device that selectively transmits light at three specific wavelength bands while blocking all other wavelengths, with AR coatings applied to minimize surface reflections. Typically, this triple-bandpass filters are widely used in:
- fluorescence microscopy & biological detection
- RGB machine vision & industrial inspection
- Medical imaging equipment
- Optical projection & display optics
- Multi-spectral sensing & biophotonics
- Consumer & scientific Cameras.
What is key parameter when choose for right Dual Bandpass Filters?
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: 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 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+550nm+650nm Triple Bandpass Filter for Fluorescence Microscopy, 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.
