UItraopto Precision Optics Co. Ltd. four-bandpass filter is a specialized optical filtering component designed for multi-band fluorescence detection. It is available in stock and also supports customization. With four independent transmission bands, it perfectly meets the emission requirements of mainstream fluorophores, featuring stable optical performance and high filtering accuracy. It is an ideal optical accessory for fluorescence applications, biochemical analysis, and other scenarios, and is fully compatible with both research and industrial-grade fluorescence detection optical systems.
This filter is equipped with four independent transmission bands at 440nm, 520nm, 600nm, and 710nm, precisely compatible with the emissions of DAPI/FITC/TRITC/CY5 fluorophores, meeting the needs of simultaneous detection of multiple fluorophores. It has excellent optical performance, with a half-width of 10±2nm, a transmittance of over 90%, a cut-off range of 250-1100nm, and an OD value of over 5, providing strong stray light shielding capability to ensure the accuracy of multi-band filtering. The product is available in two diameter specifications: φ12.7mm and φ25.4mm (both with aluminum rings), corresponding to part numbers 106001 and 106002, respectively, offering standardized selection to meet the installation requirements of different optical devices.
The product is widely applicable in fluorescence applications, spectroscopy, biochemical analysis instruments, life sciences, education and research, and other fields, providing stable and efficient multi-band filtering solutions for multi-fluorophore labeling detection, multi-band spectral analysis, and other experiments and detection tasks. The company can provide customized services based on customers' actual needs, precisely matching personalized band, size, and other filtering requirements.
Ultraopto’s Four-bandpass Filter is a high-performance multi-spectral optical filter engineered with advanced multi-layer dielectric coating technology, featuring four independent high-transmission spectral bands in a single filter to enable simultaneous multi-spectral detection, serving as a core component in fluorescence imaging, flow cytometry, multi-spectral detection and biomedical diagnostic systems. Crafted from premium optical-grade glass substrates, our product delivers an average transmittance of ≥90% for the primary spectral band and ≥93% for the secondary band in the four target transmission bands, with precise center wavelength control and narrow passband width for each band, ensuring high spectral resolution and accurate multi-spectral isolation, and the rejection region features an optical density of ≥OD6 (up to OD10 for custom ULTRA series), with steep spectral edges that minimize spectral crosstalk between the four bands and effectively block unwanted light, maximizing the signal-to-noise ratio for multi-spectral detection systems. Manufactured with strict precision coating and optical processing technology, the filter ensures consistent spectral performance across all four transmission bands, with no mutual interference and stable light transmission for each band.
We implement strict quality control over all manufacturing processes, from substrate selection to coating deposition and finished product testing, achieving a superior surface quality rating of 60/40 scratch-dig and a clear aperture of over 90%, minimizing light scattering and reflection loss for optimal multi-spectral optical performance. The filter features a compact and thin structural design with customizable overall thickness and diameter dimensions, enabling seamless integration into compact multi-spectral imaging systems, portable detection devices and miniature biomedical diagnostic instruments, and the durable hard coatings exhibit excellent environmental stability and mechanical resistance, with scratch resistance, temperature change resistance and humidity resistance, ensuring long-term stable operation in both laboratory precision testing and clinical/industrial field conditions. Our Four-bandpass Filter is also designed with low thermal expansion coefficient, avoiding wavelength drift and spectral performance degradation caused by temperature changes, which is crucial for accurate multi-spectral quantitative detection and imaging applications.
Ultraopto’s Four-bandpass Filter is widely applied in professional multi-spectral optical fields that demand simultaneous detection of multiple spectral bands, including fluorescence imaging for simultaneously capturing multiple fluorescence emission signals of biological samples, enabling multi-color fluorescence imaging and high-throughput biological analysis for biomedical research and clinical diagnosis. In flow cytometry, it is an essential component for simultaneously detecting multiple fluorescently labeled biomarkers in cells, achieving accurate cell classification and disease diagnosis, and in multi-spectral detection systems for environmental monitoring, it enables simultaneous detection of multiple atmospheric pollutants and water contaminants, improving detection efficiency and reducing equipment volume and cost. It also serves as a core component in biomedical diagnostic instruments for multi-parameter clinical testing, in industrial quality control for simultaneous detection of multiple material characteristics and surface defects, and in agricultural remote sensing for simultaneously detecting multiple crop growth parameters such as chlorophyll content and water status.
Additionally, the filter is used in machine vision systems for multi-spectral imaging and object recognition, as well as in academic research and multi-spectral optical experiment platforms for studying the multi-spectral characteristics of materials and biological samples.
As a professional manufacturer of high-performance multi-spectral optical filters, Ultraopto offers fully customized Four-bandpass Filter solutions to meet your unique multi-spectral application requirements. Our experienced R&D and engineering team can tailor the center wavelength, passband width and transmittance of each of the four spectral bands, with ultra-strict tolerance control for center wavelength to minimize spectral crosstalk between bands, and we also provide custom optical density levels for the rejection region (from OD4 to OD10) to meet different blocking requirements. We can customize the filter dimensions, thickness and mounting options to fit your specific optical system integration needs, as well as custom substrate materials and coating designs optimized for specific spectral ranges (UV, visible, near-infrared).
All custom Four-bandpass Filter orders undergo multi-stage strict multi-spectral optical performance testing and quality inspection, including transmittance measurement of each band, center wavelength verification, spectral crosstalk testing and environmental stability testing, with a detailed quality inspection report provided to ensure the final product fully complies with your design specifications and application needs. Backed by advanced multi-layer dielectric coating technology, a complete quality control system and stable batch supply capacity, Ultraopto is committed to providing global customers with high-quality Four-bandpass Filter products and comprehensive multi-spectral optical solutions. For more detailed technical parameters, product quotation information or custom design solutions for our Ultraopto Four-bandpass Filter, please contact our professional sales and technical team through the official website, and we will provide you with efficient, professional and personalized optical solutions to support the development and production of your multi-spectral imaging and detection systems.
