Product Description 75mm F1.0 10MP M34 17um 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

·Featuring a large aperture of F/1.0, it delivers high detection sensitivity and strong capability to identify small targets at long distances.

·Adopting an athermal optical design, it requires no refocusing across a wide temperature range and offers exceptional stability.

·Low distortion, high transmittance and high relative illumination ensure superior image quality and uniform imaging performance.

·Rated IP67 for dust and water resistance, it operates stably from -40℃ to +80℃ with excellent environmental adaptability.

·Lightweight structure makes it compatible with a wide range of equipment platforms.

📌 Typical Applications

Long-distance security surveillance, border patrol and reconnaissance;

Thermal imaging detection for drones and vehicles, forest fire prevention, power equipment inspection;

Long-range fault detection of industrial facilities and monitoring of high-temperature furnaces;

Tactical observation, target identification and tracking for military and law enforcement use.

1. Focal Length: 75mmAs a medium-to-long focal length prime lens, it is categorized as a standard telephoto optic in the thermal imaging field. It is optimized for long-range target identification and observation, rather than wide-area short-range monitoring.

2. Aperture: F/1.0This is an ultra-large aperture (a smaller F-number indicates a larger aperture) with extremely high luminous flux. In thermal imaging systems, a large aperture allows the detector to receive more infrared radiation, greatly improving sensitivity to targets with subtle temperature differences and delivering superior performance for detecting small and distant objects.

Compared with conventional F/1.2 and F/1.4 lenses, the F/1.0 aperture represents a premium configuration, which entails higher costs and greater challenges in optical design.

3. Compatible Detector: 640×512, 17μm pixel pitchThis lens is matched with infrared detectors featuring 640×512 resolution and a 17μm pixel size.

With 640 horizontal pixels and a horizontal field of view of 8.3°, the calculated Instantaneous Field of View (IFOV) is approximately 0.013° per pixel, equivalent to 0.23 mrad. It boasts above-average detection accuracy, ideal for long-range target recognition.

4. Field of View: 8.3° (Horizontal) × 6.6° (Vertical)For intuitive reference: At a distance of 1 kilometer, the horizontal coverage reaches around 145 meters and the vertical coverage about 115 meters. It captures fine details over long distances, and is not suitable for wide-scene monitoring at close range.

5. Focusing Mode: Athermal OpticsAthermal design is a core technology for thermal imaging lenses. The optical structure automatically compensates for focal shift caused by temperature changes within -40℃ to +80℃, maintaining sharp imaging continuously without manual refocusing.

It is a professional industrial and military-grade athermal lens. It works reliably under extreme temperature differences without relying on electronic or mechanical focusing, ensuring excellent operational stability.

6. Relative Illumination: >96%Relative illumination refers to the ratio of brightness between the image edge and the center. A value above 96% is at an elite level.

Ordinary lenses usually have only 70% to 80% relative illumination, resulting in obvious vignetting. This lens has nearly no vignetting and delivers highly uniform images with guaranteed clarity at the edges.

7. Distortion: 0.85%The ultra-low distortion rate of 0.85% means barely any image stretching, barrel distortion or pincushion distortion.

Low distortion is critical for scenarios requiring precise coordinates, such as target ranging, identification and tracking, as it avoids positional judgment errors caused by image deformation.

8. Transmittance: 88%Transmittance refers to the proportion of infrared radiation passing through the lens. A rate of 88% is an excellent performance indicator.

Equipped with high-definition (HD) coatings, the lens features strong anti-reflection and anti-stray-light capabilities. It minimizes infrared energy loss and enhances image contrast as well as detection sensitivity.

9. Operating Temperature: -40℃ ~ +80℃It supports an ultra-wide temperature range from extreme cold to high heat, far exceeding standard consumer-grade products. As an industrial and military-grade lens, it operates steadily in harsh environments including outdoor sites, vehicles and airborne equipment.

10. Front Lens Protection Rating: IP67IP67 rating explanation:

Digit 6X: Complete protection against dust ingress.

Digit X7: Protected against temporary immersion in 1-meter-deep water under normal temperature and pressure.

The front lens element meets IP67 standards, providing robust dustproof and waterproof performance. It withstands rain, snow, sand, dust and humid conditions, perfect for security surveillance, vehicle-mounted devices, drones and field reconnaissance.

11. Weight: Approx. 475gWeighing less than 500 grams, this 75mm F/1.0 lens adopts a lightweight design. It is well-suited for weight-sensitive equipment such as drones, handheld devices and lightweight gimbals, and will not impose excessive load on the host device.

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

75mm F1.0 10MP M34 17um 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.