Product Description 4.1mm F1.0  M22 12um Lens Long-wave Infrared Thermal Imaging Lens
BOSHI LENS  is a leading China Standard M12 Lens manufacturer, supplier and exporter. Adhering to the pursuit of perfect quality of products, so that our Standard M12 Lens have been satisfied by many customers. Extreme design, quality raw materials, high performance and competitive price are what every customer wants, and that's also what we can offer you. We will provide you with the best after-sales service and timely delivery.

Advantages

1.Ultra-Large Aperture: F1.0

Technical Advantage: In infrared thermal imaging systems, the aperture size plays a decisive role in light throughput . An F1.0 aperture is exceptionally large, meaning the lens can capture extremely weak infrared radiation signals.

Application Value: It significantly enhances the system's NETD (Noise Equivalent Temperature Difference) performance. This allows the system to deliver crisp, detailed, and high-contrast thermal images even in low-contrast, harsh weather, or complete darkness, showing superior sensitivity to minute temperature variations.

2.Perfect Match for Mainstream High-Resolution Detectors: 640 x 512, 12μm

Technical Advantage: The lens is tailor-made for mainstream uncooled infrared detectors featuring a 640 x 512 resolution and a 12μm pixel pitch. Combined with the 9.1mm focal length, it yields a wide Field of View (FOV) of

62.4°（D)×48.1°（H)×38.5°V. 

Application Value: It maintains excellent spatial resolution despite the wide field of view, making it ideal for scenarios that require a balance between wide-area monitoring and rich image details.

3.High Transmittance ≥90% & Excellent Optical Quality

High Transmittance: Achieving a transmittance of ≥90% within the 8~12μm wavelength band indicates advanced lens coating technology (typically high-performance LWIR anti-reflective coatings), which minimizes infrared energy loss.

Relative Illumination ≥84%: This ensures highly uniform brightness from the center to the edges of the image, effectively eliminating vignetting or peripheral signal degradation common in thermal imaging.

Distortion < -10%: For a wide-angle lens with an FOV exceeding 60°, the distortion is well-controlled within a reasonable range and can be easily corrected via back-end algorithms to ensure the geometric integrity of targets.

4.Industrial-Grade Reliability & Ruggedness

Wide Operating Temperature (-40°C ~ +80°C): This extreme temperature range allows the lens to operate flawlessly in harsh industrial environments, from freezing conditions (e.g., high-altitude or extreme winter outdoor deployment) to intense heat (e.g., power grid monitoring or industrial furnace environments).

Front Element Ingress Protection Rating IP67: The outermost lens element is highly dustproof and waterproof. It can be exposed directly to outdoor wind and rain without requiring an expensive extra infrared protective window.

Core Parameter & Technical Advantages

1.Security Surveillance & Border/Coastal Defense (Wide-Area Night Vision)

Scenarios: Perimeter defense, forest fire prevention, maritime search and rescue, and border monitoring.

Advantages: The 48.1° horizontal FOV is optimal for panoramic surveillance. The combination of an F1.0 aperture and the 8~12μm LWIR characteristics provides outstanding penetration through total darkness, thick fog, smoke, and dust, allowing rapid detection of distant heat sources (e.g., personnel, vehicles, or ignition points).

2.Electrical & Industrial Predictive Maintenance (Thermal Cameras/Thermography)

Scenarios: Substation inspections, high-voltage cable testing, pipeline leak detection, and factory equipment temperature monitoring.

Advantages: High transmittance and excellent relative illumination guarantee precise radiometric temperature measurements. The wide-angle focal length enables inspection robots or fixed thermal cameras to capture the complete thermal profile of large equipment or electrical cabinets from a relatively short distance.

3.Intelligent Transportation & Automotive Night Vision (ADAS / Autonomous Driving)

Scenarios: Automotive infrared night vision assistant systems, autonomous driving night-time perception, and intersection traffic flow monitoring.

Advantages: Thermal imaging is entirely unaffected by visible light, making it immune to oncoming high-beam glare at night. The wide FOV covers multiple lanes to detect vulnerable road users (VRUs) like pedestrians or animals much earlier. Furthermore, the IP67 front element rating perfectly withstands harsh automotive exterior environments.

4.Firefighting & Emergency Rescue

Scenarios: Handheld thermal imagers for firefighters and infrared gimbals for Unmanned Aerial Vehicles (UAVs).

Advantages: Featuring an M17 x 0.5 mount, the lens configuration is compact and lightweight, making it highly suitable for integration into handheld devices or drone payloads. In smoke-filled fire scenes, the F1.0 aperture can capture faint thermal signatures of human life or hidden fire spots, helping firefighters execute fast search-and-rescue and firefighting operations.

Our Starlight Lens can be installed in Smart home webcam, artificial intelligence camera.

4.1mm F1.0  M22 12um Lens Long-wave Infrared Thermal Imaging Lens Security Monitoring Starlight Lens, Standard M12 threaded interface Lens, with 2.0 F/NO, 6G structure, more lightweight, with high cost-effectiveness! If you are interested in our Standard Starlight Lens, you can consult us now, we will reply to you in time!

The product has the following specific characteristics：

1. Product features: Made of all plastic material, while ensuring the quality of the products, we can offer customers a lower purchase price..

2. Product advantages: Large angle, small size, Wide depth of field range.

We are eagerly awaiting your purchase and look forward to providing you with the best cooperation experience and deeper business collaboration.