Product Description 13mm F1.0 M22 12um HD 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.

I. Detailed Interpretation of Core Parameters

1. Core Optical Specifications

1. 13mm Focal Length, F1.0 Large Aperture

F1.0 represents an ultra-large light transmission aperture among infrared lenses, with far higher luminous flux than conventional F1.4/F1.8 infrared lenses. Under equal thermal infrared radiation, the signal intensity received by the detector is greatly improved, delivering significantly better signal-to-noise ratio for low-temperature weak heat sources and long-distance target imaging.

The 13mm medium focal length balances field-of-view coverage and long-distance identification, striking a compromise between wide-angle surveillance and mid-to-long-distance temperature measurement & detection.

2. Operating Wavelength: 8~12μm

This is the standard long-wave infrared (LWIR) atmospheric transmission window, compatible with uncooled vanadium oxide infrared detectors, the universal waveband for human body monitoring, equipment temperature measurement, and outdoor thermal imaging security.

3. Compatible Detector: 640×512, 12μm Pixel Pitch

Matches mainstream 640-pixel uncooled infrared camera cores (universal specifications for Hikvision, Dahua, Guide Infrared, Dali Infrared, etc.). The 12μm pixel pitch is the standard pixel size for industrial and security infrared systems, delivering moderate imaging resolution with controllable overall equipment cost.

4. Field of View: 40.7°(Diagonal) × 32.6°(Horizontal) × 26.3°(Vertical)

Medium-narrow field of view with versatile applicability:

·The 32.6° horizontal FOV suits linear inspection scenarios such as roadways, factory compounds, and border lines;

·The 26.3° vertical FOV covers scenes with large elevation differences, including viaducts, mountainous areas, and platforms;

·Free from severe edge attenuation common in ultra-wide-angle lenses, balancing viewing range and imaging uniformity.

5.Focus Range: 1m ~ ∞

Supports close-range temperature measurement for equipment at 1m distance and long-distance thermal observation of heat sources thousands of meters away, enabling dual functions of short-range equipment inspection and long-distance security monitoring with a single lens.

2. Image Quality Indicators

1.AR Anti-Reflection Coating on Exposed Optics

Specialized infrared anti-reflection coating for 8–12μm waveband reduces stray light reflection on lens surfaces. Combined with ≥86% overall transmittance, it maximizes infrared energy collection and suppresses ghost images and glare, delivering clean imaging under high-temperature strong light conditions.

2.Transmittance ≥86% (Full 8~12μm Waveband)

This is an excellent performance benchmark for infrared lenses, as ordinary infrared lenses typically only achieve 70%~80% transmittance. High transmittance amplifies the advantages of the F1.0 large aperture, making weak low-temperature heat sources (e.g., electric leakage, pipeline heat loss) far easier to identify.

3.Relative Illumination ≥75%

Brightness at the four corners of the image frame remains no less than 75% of the center brightness, eliminating obvious darkening at edges during large-area panoramic monitoring. No heavy software edge brightening (which would trigger excessive noise) is required.

4.Distortion ≤-1.5%

The negative value indicates mild barrel distortion with superior distortion control. Straight lines in the scene show almost no bending, eliminating dimensional or temperature measurement errors caused by optical distortion — ideal for industrial scenarios requiring precise temperature reading and dimension calculation.

3. Mechanical & Environmental Adaptability

1.Mount: M20 × 0.5

Standard universal threaded interface for the infrared industry, directly compatible with most mainstream 640 uncooled infrared camera cores on the market, delivering strong compatibility and low replacement/integration costs.

2.Front Element Ingress Protection Rating: IP67

The front lens element is dustproof and waterproof, enabling direct outdoor deployment without additional protective housings. It resists short-term rain splashes, sand dust, and humid environments, greatly simplifying the structural design of outdoor complete equipment.

3.Operating Temperature: -40℃ ~ +80℃

Ultra-wide temperature tolerance range covering frigid northern winters, scorching southern summers, and high-temperature industrial workshops/smelting peripheries. The lens optics, barrel, and coating avoid delamination, deformation, and focus shift under extreme high/low temperature for stable round-the-clock operation.

II. Summary of Core Performance Advantages

Advantage 1: Extreme Low-Heat Infrared Detection Capability (F1.0 Large Aperture + 86% High Transmittance)

Few lenses of the same focal length adopt the F1.0 light transmission aperture. Paired with high-transmission AR coating, its identification capacity for low-temperature weak heat sources far outperforms conventional F1.4 lenses. It clearly captures long-distance tiny hotspots, underground pipeline heat leakage, and minor temperature rises in electrical equipment, boosting temperature measurement accuracy and alarm sensitivity.

Advantage 2: Uniform Imaging & Low Distortion, Suited for Both Surveillance and Precision Temperature Measurement

The ≥75% edge relative illumination solves the common "dark four corners" defect of wide-angle infrared lenses. Distortion controlled within 1.5% ensures geometric fidelity of the image. No false temperature readings induced by optical distortion occur during industrial temperature measurement, power defect inspection, and rail transit thermal detection — perfect for quantitative inspection applications.

Advantage 3: All-Weather Outdoor Deployment with Simplified Protection & Stable Wide-Temperature Performance

IP67 front lens protection plus -40~80℃ wide temperature range supports direct installation in open fields, substations, mines, and highways without customized waterproof housings. No focus drift or coating failure occurs under extreme temperatures, cutting overall equipment integration costs and failure rates.

Advantage 4: High Versatility, Compatible with Mainstream 640 Infrared Camera Cores

The 12μm 640×512 format is the most popular specification for uncooled infrared detectors. The M20×0.5 standard thread mount enables mass integration by security, industrial temperature measurement, and vehicle-mounted infrared equipment manufacturers with mature supply chain matching.

Advantage 5: Integrated Near & Long-Range Focusing

Continuous focusing from 1m close distance to infinity allows one single lens to satisfy two scenarios: short-range equipment inspection (switch cabinets, motors) and long-distance security monitoring (borderlines, factory perimeter). It reduces inventory variety by eliminating the need to stock lenses of different focal lengths.

III. Segmented Application Fields

1.Power & Energy Industry (Core Application Scenario)

·Infrared temperature measurement for substations & power distribution rooms: Captures subtle temperature rises on connectors, busbars, and circuit breakers; low distortion guarantees precise temperature readings; IP67 protection adapts to outdoor substation environments.

·Long-distance inspection of transmission lines & poles: The 13mm focal length paired with F1.0 large aperture identifies wire strand breakage and insulator heating defects thousands of meters away; wide temperature tolerance adapts to wild temperature fluctuations in the field.

·Hot spot detection for photovoltaic power stations: High transmittance identifies faint hot spots on PV panels, while uniform relative illumination delivers shadow-free imaging of the entire PV array.

2. Outdoor Security & Border Surveillance

·Intrusion early warning for factory compounds, oil fields, and mines: The 8–12μm waveband penetrates complete darkness and thin mist; the F1.0 aperture captures weak human body infrared radiation, and the 32.6° horizontal FOV fits linear wall perimeter layout.

·All-weather night vision for borders & coastal defense: -40℃ low-temperature resistance adapts to frigid northern climates, and IP67 rating withstands rain, snow, and sandstorms to identify personnel and vehicle heat sources at long distances.

·Thermal imaging fire warning & speed measurement for highways and tunnels: Low distortion ensures accurate calculation of vehicle size and position, and the lens resists fog and dust in humid tunnel environments without fogging.

3.Predictive Maintenance for Industrial Equipment

·Equipment monitoring in metallurgy & smelting high-temperature workshops: Tolerates up to +80℃ ambient temperature to detect overheating faults on blast furnaces, conveyor bearings, and motors.

·Heat leakage inspection for chemical pipelines & storage tanks: Supports close-range 1m proximity scanning of equipment and long-distance full pipeline screening; high transmittance captures tiny heat leakage points.

·Temperature control detection for data center server rooms & energy storage cabinets: Identifies abnormal temperature rises in battery packs and servers for early fire risk warning.

4. Rail Transit & Vehicle-Mounted Infrared Systems

·On-board infrared monitoring for high-speed & metro trains: Detects overheating on rail fasteners and train braking systems; wide temperature tolerance adapts to seasonal outdoor temperature swings, and IP67 rating resists tunnel water mist and dust.

·Vehicle night vision driving assistance: Identifies pedestrians and animal heat sources after dark; the medium FOV balances long-distance forward detection and roadside coverage.

5.Forest Fire Prevention & Natural Resource Inspection

UAV or ground-based pan-tilt forest fire monitoring: Identifies hidden fire sources deep in forests from long distances; its weak heat source detection capability spots early smoldering fires ahead of open flames, with outdoor waterproof and temperature-resistant design adapting to complex mountain climates.

6. Civil Temperature Screening & Emergency Rescue

·Personnel temperature screening at factories and ports: Uniform illumination ensures error-free multi-person simultaneous temperature measurement at frame edges, and all-weather outdoor operation avoids interference from sunlight and rain.

·Firefighter search & rescue: Penetrates dense smoke to locate trapped victims; short focusing distance supports indoor confined-space search, while long-range mode scans entire fire sites.

IV. Differentiating Advantages vs. Competitor Products

Compared with ordinary 13mm F1.4/F1.8 long-wave infrared lenses of the same focal length, this product delivers key differentiators:

·Doubled light transmission capacity for higher sensitivity to low-temperature heat sources;

·Built-in IP67 front lens protection that simplifies complete equipment structural design;

·Lower distortion and higher edge relative illumination for superior reliability in professional temperature measurement scenarios;

·Stable performance across the full -40~80℃ temperature range with stronger adaptability to extreme environments.

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

13mm F1.0 M22 12um HD 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.