Products Description
BP430 Bandpass Filter | CWL 430nm, FWHM 30nm, High Transmission

The OPTOStokes BP430 Bandpass Filter is a precision optical filter designed to isolate the blue wavelength region around 430nm with high spectral accuracy. Featuring a center wavelength (CWL) of 430±3nm and a narrow full width at half maximum (FWHM) of 30±3nm, this filter provides reliable wavelength selection for optical measurement and analytical systems requiring stable spectral performance.
With high transmission from 420-440nm at T>90% and blocking performance from 350-1100nm at T<1%, the BP430 delivers effective suppression of unwanted background wavelengths. It is suitable for engineers developing compact optical instruments, spectrophotometers, and precision detection systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | BP430 |
| Filter Type | Bandpass Optical Filter |
| Center Wavelength (CWL) | 430±3nm @ T>90% |
| Full Width at Half Maximum (FWHM) | 30±3nm |
| Transmission Range | 420-440nm @ T>90% |
| Blocking Range | 350-1100nm @ T<1% |
| Spectral Region | Visible Blue Wavelength |
| Application Category | Optical Measurement and Analytical Instruments |
Applications
The BP430 bandpass filter is commonly integrated into spectrophotometers and optical analysis equipment where precise wavelength isolation is required. By transmitting a defined spectral band while rejecting unwanted wavelengths, it helps improve measurement accuracy and signal quality.
Typical applications include analytical instruments, color measurement systems, optical sensing equipment, laboratory spectroscopy, and other visible-spectrum detection platforms. For related solutions, OPTOStokes also provides Bandpass Filters and Spectrophotometry optical components.
Customization & Service
Beyond standard BP430 models, OPTOStokes supports customized optical filter solutions based on specific system requirements. Available customization options include round, square, and irregular shapes, as well as mounted filter assemblies with retaining rings.
Engineers can request customized spectral specifications, dimensions, substrate selections, and coating designs. With extensive in-stock selections and flexible manufacturing capabilities, OPTOStokes helps customers reduce development cycles while maintaining consistent optical performance.
Reliable Optical Filter Solutions for Engineering Applications
Selecting the right optical filter often involves balancing spectral performance, delivery time, and customization capability. OPTOStokes provides technical support for prototype development and production requirements, helping customers solve challenges related to wavelength accuracy, filter availability, and system integration.
For BP430 specifications, pricing, or customized optical filter requirements, please contact OPTOStokes at sales@optofilters.com or submit an inquiry through www.optofilters.com.
Tags: optical filter bandpass filter narrowband filter 40nm FWHM spectrophotometry CWL 430nm filter visible filter