BP540-7 Bandpass Filter(CWL=540nm,FWHM=7nm)

BP540-7 Bandpass Filter - Ultra-Narrow Green Light Precision

The BP540-7 bandpass filter represents the pinnacle of green light spectral precision, delivering exceptional performance at the 540nm wavelength. With an ultra-narrow 7nm FWHM bandwidth and OD4 blocking, this filter provides unmatched spectral selectivity for the most demanding fluorescence microscopy, laser line filtering, and high-resolution analytical applications.

Key Features

• Center Wavelength (CWL): 540nm - optimized for green light applications
• Ultra-Narrow Bandwidth: 7nm FWHM for maximum spectral resolution and precision
• Superior Blocking: OD4 optical density ensures 10,000:1 rejection of unwanted wavelengths
• High Transmission: Optimized coatings maximize throughput at 540nm
• Premium Quality: Hard-coated surfaces for long-term durability and stability

Applications

Essential for ultra-high precision optical applications including:

• Fluorescence microscopy with green fluorophores (GFP, FITC, Alexa Fluor 488)
• Green laser line filtering and beam cleanup (532nm region)
• Flow cytometry and multi-color cell analysis with tight spectral requirements
• Confocal microscopy and laser scanning systems
• High-resolution spectroscopy and photometry
• Raman spectroscopy with green laser excitation
• Machine vision wavelength separation and color analysis
• Semiconductor inspection and quality control

Technical Excellence

The 540nm wavelength occupies a critical position in the green spectral region, making it invaluable for applications requiring precise green light isolation. Our BP540-7 filter's ultra-narrow 7nm bandwidth provides exceptional spectral resolution, enabling precise isolation of this wavelength while rejecting adjacent spectral regions with minimal interference—ideal for applications where even minor spectral overlap can compromise results.

With OD4 (10,000:1) blocking performance, this filter delivers superior out-of-band rejection critical for sensitive fluorescence applications and multi-color imaging experiments. The exceptional blocking ensures that weak fluorescence signals can be detected without interference from excitation light or emissions from other fluorophores, making it ideal for demanding research applications requiring maximum spectral purity.

The ultra-narrow 7nm bandwidth is particularly valuable for applications requiring maximum spectral discrimination, such as multi-color flow cytometry where multiple fluorophores with closely spaced emission spectra must be clearly separated. This extremely narrow bandwidth minimizes spectral crosstalk to an absolute minimum, enabling more accurate quantitative measurements and clearer separation of adjacent fluorophores.

Manufactured using state-of-the-art ion-beam sputtering technology, the BP540-7 delivers consistent performance across the entire aperture with minimal transmission variation and excellent transmitted wavefront quality. The hard-coated surfaces ensure durability in demanding laboratory environments, maintaining optical quality through years of continuous use in fluorescence microscopy and laser-based systems.

The filter's ultra-narrow bandwidth also makes it excellent for laser line filtering applications, providing exceptional spectral isolation for green laser sources. This is particularly valuable in Raman spectroscopy and confocal microscopy systems where laser line purity directly impacts measurement accuracy and image quality.

The 7nm bandwidth represents one of the narrowest commercially available bandwidths for visible light filters, making this filter ideal for applications where conventional narrow-band filters (10-20nm) cannot provide sufficient spectral discrimination. This extreme selectivity enables new possibilities in multi-color imaging and spectroscopy that would be impossible with broader bandwidth filters.

Whether you're conducting fluorescence imaging with GFP or FITC dyes, performing multi-color flow cytometry with the tightest spectral requirements, filtering green laser output for Raman spectroscopy, or building high-resolution spectroscopic instruments, the BP540-7 provides the wavelength precision and optical quality that the most demanding research applications require. Trust SyronOptics for optical components that deliver ultra-precision performance.