This F1.0 25mm long wave infrared lens is independently researched and manufactured by BOSHI Optical Technology. As a high‑performance Thermal Imaging Lens operating within 8‑12μm wavelength band, this Long Wave Infrared Lens is optimized for 640×512, 12μm Lens thermal detectors. Boasting F1.0 large aperture structure, the Infrared Lens delivers superior light‑gathering performance to cope with low‑visibility and low‑temperature monitoring work scenarios. The M22×0.5 Lens mounting structure supports simple installation on matched thermal camera equipment. Front‑end lens component achieves IP67 protection grade to deliver stable outdoor operation performance. This 25mm Thermal Camera Lens realizes above 86 percent transmittance and over 97 percent relative illumination meanwhile keeps distortion below 2 percent. Focus adjustment range covers 2 meters to infinity, and stable operation can be realized under temperature environment ranging from ‑40℃ to +80℃. BOSHI Optical Technology implements precise calibration for each finished product, to sustain stable imaging output for industrial and security surveillance thermal imaging devices.
Optical parameters of this product adopt professional tuning completed by BOSHI Optical Technology. Focal length reaches 25mm and F‑number sets at F1.0. Working wavelength falls within 8‑12μm long‑wave infrared band which belongs to standard Long Wave Infrared Lens product. This Infrared Lens realizes perfect compatibility with 640×512, 12μm Lens thermal detectors and adapts to mainstream uncooled infrared sensor modules. Diagonal field of view reaches 22.5 degree, horizontal field of view reaches 17.7 degree and vertical field of view reaches 14.1 degree. Such parameter configuration brings outstanding observation capacity for medium‑distance monitoring tasks.
Mechanical and environmental parameters come from standardized design of BOSHI Optical Technology. M22×0.5 Lens mounting interface facilitates equipment manufacturers to complete product assembly and equipment integration. Focus adjustment scope stretches from 2 meters to infinity, which can satisfy short‑range inspection demands as well as long‑distance monitoring requirements. Operating temperature range covers ‑40℃ to +80℃ so the Thermal Imaging Lens can keep stable work output under extreme climate environment. Front lens unit reaches IP67 protection grade to support outdoor complex‑condition deployment.
Imaging quality parameters rely on advanced anti‑reflection coating process. Exposed optical surfaces receive AR coating treatment. Actual transmittance stays higher than 86 percent. Relative illumination maintains above 97 percent. Distortion value is controlled below 2 percent. Every index of this Thermal Camera Lens undergoes strict inspection before product delivery.
| Specification | Value |
|---|---|
| Focal Length | 25mm |
| F/# | F1.0 |
| Compatible Detector | 640×512, 12μm |
| Exposed Optics Coating | AR |
| Field of View | 22.5°(D) × 17.7°(H) × 14.1°(V) |
| Focus Range | 2m ~ ∞ |
| Operating Temperature | -40℃ ~ +80℃ |
| Relative Illumination | >97% |
| Distortion | <2% |
| Transmittance | >86% |
| Mount | M22 × 0.5 |
| Front Element Ingress Protection Rating | IP67 |
| Wavelength | 8 ~ 12μm |
Large F1.0 aperture: BOSHI Optical Technology applies ultra‑large aperture design on this 25mm Infrared Lens. The structural feature improves receiving efficiency of infrared photon signals obviously. When working under environments with weak thermal radiation, the Thermal Imaging Lens can output much clearer thermal imaging picture compared with products with smaller aperture value.
Excellent optical uniformity: Index of relative illumination above 97 percent effectively restrains dark corner phenomenon at picture edge area. Distortion index below 2 percent guarantees geometric authenticity of thermal imaging picture. This performance feature supplies reliable technical support for measurement oriented thermal system application scenarios.
Robust environmental adaptability: IP67 protection grade of front lens realizes dust prevention and short‑term waterproof capacity for outdoor application. Optimized optical structure from BOSHI Optical Technology effectively restrains focus offset phenomenon caused by drastic temperature fluctuation. The Long Wave Infrared Lens can maintain consistent imaging effect under temperature sharp change conditions.
High transmittance AR coating: Coating layer of this 25mm F1.0 Thermal Camera Lens lowers surface reflection loss of infrared light. It promotes utilization efficiency of infrared energy and lifts signal‑to‑noise ratio of whole thermal camera system. The 12μm Lens matched optical structure gives full play to sensor performance potential.
Mature standardized interface: M22×0.5 Lens mounting mode supports convenient product replacement. Equipment cooperative partners of BOSHI Optical Technology can carry out large‑volume assembly work efficiently with this standardized interface.

Outdoor perimeter security surveillance: This Thermal Imaging Lens supports border defense site monitoring work. It can also undertake perimeter thermal monitoring tasks for factory areas and campus zones. The 25mm Infrared Lens completes intruder detection work day and night without auxiliary visible light source. IP67 grade structural performance guarantees stable long‑time outdoor running for the Long Wave Infrared Lens.
Industrial predictive maintenance: This Thermal Camera Lens can be assembled onto thermal inspection camera devices. Operators utilize the 12μm Lens matched optical performance to discover overheating failure risks of power equipment, mechanical bearing components and electrical cabinet facilities. 640×512 detector matching capacity ensures rich picture detail for equipment fault diagnosis.
Traffic and transportation monitoring: The product can be applied for road traffic infrared sensing work. It completes vehicle heat feature capturing and abnormal temperature alarm triggering function. Medium distance field‑of‑view property of this 25mm lens fits road‑side real‑time monitoring demands.
Unmanned system payloads: Compact volume characteristic of F1.0 Thermal Imaging Lens makes it suitable for ground robot equipment and small unmanned aerial vehicle loading. In foggy weather, night‑time environment or smoke‑filled environment, the Infrared Lens supports search and rescue task execution.
Fire prevention and early warning: The Long Wave Infrared Lens undertakes forest fire monitoring mission. It also realizes warehouse internal temperature early warning function. The 25mm focal length configuration helps users capture medium‑distance abnormal heat source information timely.