Sensor and Detector Filter

Sensor and Detector Filter Description

1.  Features

• High Efficiency: Designed for high selectivity in optical filtering, ensuring efficient gas detection and analysis.
• Wide Application Range: Optimized for online detection in a variety of infrared optical applications.
• High Transmission: Features high transmittance in key spectral regions, ensuring precise measurement and detection.
• Customizable Designs: Available in a wide range of wavelengths, with customized options available for unique applications.
• Durability and Reliability: Manufactured with dielectric coatings that improve longevity and performance in various environmental conditions.

2. General Description

The Sensor and Detector Filters from Shape Optics Technologies Pte Ltd are essential components for high-performance infrared optical applications. These filters are designed to enable highly selective wavelength transmission, ideal for online detection systems in fields like environmental monitoring, gas detection, and precision laser applications. They ensure precise measurement by providing high transmission and deep reflection for specific wavelengths of interest.

These filters are specifically optimized to improve the responsiveness of photodetectors used in applications like Raman scattering and other spectral analysis methods. With custom wavelength options, they cater to a variety of detection needs, ensuring flexibility and adaptability to specific requirements.

The use of multi-layer dielectric coatings helps mitigate the wavelength-dependent response of silicon photodiodes, which improves the uniformity of the detector response. This makes the filters perfect for applications in toxic gas detection, water quality analysis, and atmospheric monitoring, where precise optical measurement is critical.

3. Spectrum Transmission Curves

If standard components are unavailable, Shape Optics Technologies offers customized services to meet specific application needs. Customers can request tailored wavelengths or transmission characteristics for their unique requirements.

4. Coating Quality

The filters undergo rigorous quality testing, ensuring they meet military standards for durability and performance.

• Adhesion Test: Compliant with MIL-C-675C standards. The adhesion test involves applying tape meeting LT-90 specifications to the lens film, with no blistering or peeling observed after vertical removal.
• Temperature Test: Filters are tested at -62±1℃ and 71±1℃, ensuring no detachment after two hours at room temperature.
• Abrasion Resistance Test: Conforming to MIL-C-675C and CCC-C-440 standards, ensuring no damage from 1.0 lb force.
• Humidity Test: Filters withstand exposure to 95-100% humidity for 24 hours with no peeling or defects.
• Solvent and Cleaning Testing: No degradation after exposure to acetone and alcohol.
• Salt Spray Test: Withstands 100 hours in a 35°C saltwater solution without damage.

5. Standard Specifications

• Materials: Fused silica, BK7, and custom coatings.
• Dimensions: Minimum of 2mm-55mm; Custom sizes upon request.
• Flatness: λ/4 for superior optical performance.
• Surface Quality: 60-40 for high-quality clarity.
• Custom Wavelengths: Available for specialized applications, including infrared ranges (e.g., CO2, CH4, and N2O detection).
• Temperature Range: -40°C to +60°C.

6. General Applications and Examples

These filters are commonly used in gas detection systems, especially for monitoring toxic gases such as CO2, CH4, CO, and other gases with distinct absorption peaks in the infrared range.

• Water Quality Analysis: Detects chemical and biological contaminants through spectral absorption characteristics.
• Toxic Gas Detection: Monitors industrial, environmental, and health-related toxic gases with high specificity.
• Ranging Laser Systems: Used in laser-based ranging systems for accurate distance measurements.
• Atmospheric Monitoring: Detects pollutants and atmospheric gases in air quality control systems.

7. SOT Strengths and Capabilities

Shape Optics Technologies Pte Ltd specializes in high-precision optical filters designed for a wide range of scientific and industrial applications. The company’s commitment to quality and precision ensures that each product delivers exceptional performance and durability. With the ability to provide customized solutions, SOT ensures that their filters meet the specific needs of each customer, backed by reliable, high-performing technology.

8. Standard Products

Here is a summary of Standard Sensor and Detector Filters:

This table can be customized with additional rows for various wavelengths and products upon request.