Comprehensive Infrared Filter Solutions
MOK OPTICS specializes in the design and manufacturing of high-performance Infrared (IR) Filters, available in three primary categories: Broadband Infrared Filters, Narrowband IR Filters, and Neutral Density IR Filters. Our IR filters are precisely engineered using high-transmittance substrate materials, ensuring exceptional optical performance across the infrared spectrum.
High-Performance Substrate Materials
To achieve superior infrared transmission, MOK OPTICS employs a variety of high-quality substrate materials, including but not limited to:
Silicon (Si) – Excellent IR transmission in the 1-7μm range
Sapphire (Al₂O₃) – High durability and broad spectral range
IR Grade Fused Silica (e.g., Corning 7979/SK-1310) – Low absorption and high thermal stability
Germanium (Ge) – High refractive index, ideal for thermal imaging
Zinc Selenide (ZnSe) & Zinc Sulfide (ZnS) – Optimal for CO₂ laser applications
Calcium Fluoride (CaF₂) – Low dispersion and wide transmission range
These materials are precisely processed into thin optical components, tailored to optimize spectral performance across designated IR wavelengths.
Three Major Categories of IR Filters
1. Broadband Infrared (IR) Filters
Broadband IR filters are designed to transmit a wide region of the infrared spectrum centered around a specific wavelength, efficiently blocking unwanted light outside the designated range. These filters ensure maximum signal integrity for applications requiring broad spectral coverage.
2. Narrowband Infrared (IR) Filters
Narrowband IR filters provide highly selective wavelength transmission, allowing only a narrow region of the infrared spectrum to pass while effectively blocking out-of-band radiation. These filters are critical for applications that demand precision spectral selection, including gas detection and spectroscopy.
3. Infrared Neutral Density (ND) Filters
Infrared ND filters regulate IR intensity by leveraging a combination of metal alloy coatings based on both reflection and absorption mechanisms. These filters are essential for applications requiring controlled attenuation of infrared light without spectral distortion.
Wide Spectral Coverage & High Transmission Efficiency
MOK OPTICS’ IR Bandpass Filters cover the full infrared spectrum from 0.9μm to 12μm, offering unparalleled spectral selectivity and peak transmission rates approaching 98%. Our IR ND filters are optimized for 2.2μm wavelengths but maintain operational efficiency up to 15μm. The integration of advanced coatings ensures high transmission rates and minimal signal loss, making them suitable for demanding optical applications.
Applications of MOK OPTICS Infrared Filters
MOK OPTICS’ IR filters are engineered to support a diverse range of high-precision applications, including:
Infrared Thermal Imaging – Enhancing clarity and detection in thermal cameras
Infrared Thermal Sensing – Accurate temperature measurement and monitoring
Infrared Thermography – Critical for industrial and medical diagnostics
Infrared Light Emitters & Detectors – Optimizing optical performance in IR systems
Gas Detection & Spectroscopy – Essential for environmental monitoring and industrial safety
Semiconductor Inspection – Precision filtering for advanced manufacturing processes
Exceptional Optical Stability & Customization
Our IR filters are designed with superior thermal stability, ensuring reliable performance under extreme conditions. Leveraging state-of-the-art material properties and coating technologies, MOK OPTICS delivers filters with:
High durability and environmental resistance
Optimal signal-to-noise ratio for enhanced image clarity
Customization options tailored to specific wavelength and application requirements
Expert Consultation & Tailored Solutions
At MOK OPTICS, we prioritize customer-specific needs by offering fully customizable IR filter solutions. Our team of experienced optical engineers provides expert consultation to guide you towards the optimal filter specifications for your application.
Contact us today to discuss your infrared filtering needs and explore our cutting-edge optical solutions.