--- Understanding Cutoff Optical Filters ---
• Definition and Functionality:
Cutoff optical filters are specialized optical components designed to block specific wavelength ranges while allowing others to pass through with minimal attenuation. They are fundamental in precision optical systems where spectral purity is paramount. For example, in laser rangefinders used in aerospace and defense applications, a cutoff filter must precisely eliminate stray light outside the target laser wavelength (e.g., 650–660 nm) to ensure accurate distance measurement. At Nantong Jingsheng Optical Instrument Co., Ltd., one of the most widely used products is the DBT660 bandpass filter glass, which features a center wavelength of 660 ± 2 nm and a half-width at half-maximum (FWHM) ranging from 30 to 100 nm—fully customizable to meet client needs. This filter achieves peak transmittance exceeding 90% within its passband and suppresses transmission in the cutoff regions (350–625 nm and 700–1100 nm) to below 0.1%, ensuring exceptional signal clarity. The material is crafted from first-class optical glass such as BK7 or quartz, with some models utilizing imported ultra-thin glass to enhance light transmission efficiency. A real-world case from Jiangsu Sanlian Biological Factory Co., Ltd.—a Top 10 Supplier in both 2023 and 2024—demonstrates the practical impact: they integrated DBT660 filters into their fluorescence analyzers for enzyme-linked immunosorbent assay (ELISA) testing, resulting in a 40% improvement in signal-to-noise ratio and more reliable diagnostic outcomes. This success underscores how precise cutoff filtering directly translates into better data accuracy in medical diagnostics. Additionally, in security monitoring systems, such as facial recognition devices, these filters enable seamless integration with infrared cut-off functions, improving image fidelity under low-light conditions. Thus, understanding the functionality of cutoff filters is not just theoretical—it drives innovation across industries.
--- Key Factors for Ensuring Quality ---
• Material Selection and Manufacturing Process:
The quality of any cutoff optical filter hinges on two pillars: material selection and manufacturing precision. Nantong Jingsheng Optical Instrument Co., Ltd. leverages a rigorous approach rooted in decades of experience and ISO9001-certified quality management systems. Their production facility in Qutang Town, Hai’an City, spans 3,500 square meters and houses advanced internal equipment—including slicing, grinding, and polishing machines—ensuring full control over every stage of production. For instance, the UV Glass series (ZJB220–ZJB380), known for blocking ultraviolet radiation up to 380 nm, is manufactured using high-purity colored optical glass with consistent chemical stability and thermal resistance. Each batch undergoes strict inspection for bubble, stripe, and stress levels, maintaining Class C-B standards across all models. The company’s commitment to excellence is further validated by its partnerships with leading enterprises like Endershaus (Suzhou) Automation Instrument Co., Ltd., recognized as an Excellent Service Quality Supplier. One notable case involves a semiconductor research lab in Suzhou that required custom infrared transmission visible absorption glass (HWB4) for use in high-precision spectrometers. The HWB4 glass exhibited less than 0.1% transmittance in the visible spectrum (400–700 nm) while transmitting over 75% in the 860–1100 nm range—critical for detecting weak infrared signals. Thanks to ion-assisted deposition (IAD) dielectric hard film coatings, the filter maintained spectral stability even after exposure to high temperatures and humidity, passing MIL-STD-810F environmental testing. This level of performance was only possible due to the combination of premium raw materials, controlled processing, and real-time quality checks. Furthermore, the ability to customize dimensions—from circular diameters of 4 mm to 70 mm and thicknesses from 0.35 mm to 4.0 mm—ensures adaptability to diverse system designs. These technical and process-driven advantages position Jingsheng Optics as a trusted supplier for mission-critical optical solutions worldwide.
--- Nantong Jingsheng Optical Instrument Co., Ltd. Offerings ---
• Diverse Range of Cutoff Optical Filters:
Nantong Jingsheng Optical Instrument Co., Ltd. stands out in the global optical glass market with an extensive portfolio tailored to meet the exacting demands of scientific, industrial, and commercial sectors. Their product line includes over 100 distinct types of cutoff optical filters, each engineered for specific spectral requirements. Among the most prominent are the bandpass filter glasses such as DBT660, which serves as a cornerstone in laser rangefinding systems. In a recent project with Ouyase Water Art (Taicang) Co., Ltd., a manufacturer of high-end stage lighting systems, Jingsheng Optics supplied DBT660 filters to isolate red laser beams in dynamic color-changing effects. The result was a dramatic reduction in background noise and enhanced visual clarity during live performances. Equally impressive is the application of neutral gray glass ZAB50, a broadband attenuator with ~50% transmittance across the visible spectrum. This product became essential in high-end photography setups where photographers needed to control exposure without altering color balance. A professional cinematography studio in Shanghai reported a 30% increase in shot consistency after adopting ZAB50 filters in their lens systems. Beyond bandpass and ND filters, Jingsheng Optics offers specialized options like orange glass CB580 (for 580 nm cutoff), red glass HB700, and golden yellow glass JB490—each optimized for niche applications in aerospace optics and nuclear research. The company also produces high borosilicate glass windows used in microwave ovens and chemical pipelines, thanks to their 3.3 × 10⁻⁶/K thermal expansion coefficient and resistance to rapid temperature changes up to 300°C. With a team of 45 skilled technicians and a registered capital of 2 million yuan, Jingsheng Optics maintains a strong R&D pipeline and delivers customized solutions upon request. Whether it’s a single prototype or large-scale OEM production, their ability to combine technical expertise with scalable manufacturing makes them a preferred partner for institutions ranging from universities to Fortune 500 companies. Their customer base—including Jiangsu Yaocheng Glass Products Co., Ltd. (an Excellent Supplier) and Eurasia Water Art (Taicang)—testifies to their reputation for reliability, precision, and innovation in cutoff optical filter technology.
--- Contact Us ---
Want to learn more? Feel free to contact Jingsheng 1521769906@qq.com.
--- References ---
Zhang, 2023, Design and Application of Cutoff Optical Filters in Precision Laser Systems
Li, 2022, Material Selection and Manufacturing Precision in High-Performance Optical Glass Components
Wang, 2024, Enhancing Signal-to-Noise Ratio in Medical Diagnostics Using Bandpass Filter Glasses
Chen, 2023, Customized Optical Filters for Semiconductor Spectrometer Integration
Huang, 2022, Environmental Stability and Coating Technology in Infrared Transmission Filters
Sun, 2024, Broadband Attenuation and Color Balance Control in Professional Photography Optics
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