Import 515nm Narrow Bandpass Filter Fwhm10nm — Buy in wholesale FOB from Supplier in China

The 515nm narrow bandpass filter with a full width at half maximum of 10nm is a precision optical interference filter manufactured by Changchun Sunday Optoelectronics Co., Ltd in Jilin Province, China. It transmits a narrow spectral band centred at 515 nanometres while attenuating out-of-band wavelengths through a multi-layer dielectric thin-film coating deposited on optical substrate. This wavelength corresponds to the green region of the visible spectrum, commonly employed in fluorescence microscopy, laser-based instrumentation, and spectral analysis systems where selective wavelength isolation is critical.

The filter construction typically comprises a polished optical glass or fused silica substrate with deposited quarter-wave and half-wave dielectric layers of alternating high and low refractive index materials such as titanium dioxide and silicon dioxide. The 10nm FWHM specification indicates high spectral selectivity, requiring precise control of layer thicknesses during vacuum deposition. Typical peak transmission for this class of filter ranges from 40% to 85% depending on design complexity, blocking level, and substrate material. Out-of-band optical density of OD3 or greater is standard for fluorescence applications to minimise crosstalk from excitation sources.

Applications include confocal and widefield fluorescence microscopy using green fluorescent protein and similar fluorophores, Raman spectroscopy instrumentation, laser line clean-up, and machine vision systems employing 515nm laser diodes. Buyers of this filter from Changchun Sunday Optoelectronics Co., Ltd should confirm substrate dimensions, clear aperture, and mounting thread specifications. The company is based in Changchun, a region with established optoelectronics manufacturing infrastructure, though buyers should verify current production capacity and quality control procedures directly.

Changchun Sunday Optoelectronics Co., Ltd is located at No. 9576 Donghuan Road, Changchun, Jilin Province, 130000, China. The supplier holds harbour trust tier status within the marketplace, representing a baseline level of verification without premium assurance. The company shows a recorded 0.00% response rate and zero average response hours, which necessitates direct contact verification by potential buyers before order commitment. Changchun is recognised as a significant centre for optical manufacturing in China, with established supply chains for precision optical components.

The company's product focus centres on optoelectronic components including narrow bandpass filters for scientific and industrial applications. No specific year of establishment, factory floor area, employee count, revenue figures, or named client references appear in the available profile data. Buyers should independently verify production capabilities, coating chamber specifications, metrology equipment for spectral testing, and existing export experience with European or North American quality standards.