50mm focal length Thermal Imaging Lens

Product Brief Description

This high‑performance thermal imaging lens is developed and manufactured by BOSHI Optical Technology, tailored for uncooled long‑wave infrared thermal imaging devices. Adopting 50mm focal length together with bright F1.0 large aperture, this thermal imaging lens possesses excellent light‑gathering capability to cope with low‑light thermal detection scenarios. The product matches 640×512,12μm infrared detectors and operates in the classic 8‑12μm long‑wave infrared spectral band.

The front optical component reaches IP67 waterproof rating. The product can stably run within the temperature scope from minus 40 degrees Celsius to plus 80 degrees Celsius. It supports focus adjustment covering two meters to infinity. Transmittance stays above 90 percent while relative illumination reaches no less than 94 percent, which can produce even and clear thermal images. This infrared lens fits scenarios including outdoor monitoring, perimeter security and thermal observation. It delivers steady and trustworthy optical performance for diverse infrared imaging systems running in tough working conditions。

Detailed Product Description

Parameter

1. Optical Specs

Equipped with 50mm focal length and F1.0 large aperture, this long wave infrared lens works within 8‑12μm spectral band. It is optimized to pair with 640×512 detector with 12μm pixel size. Its diagonal field of view is 11.27 degrees, horizontal field of view is 8.8 degrees and vertical field of view is 7.0 degrees. Such field of view setting creates proper coverage range and satisfies the usage requirement of long‑distance thermal observation. BOSHI Optical Technology completes optical simulation and repeated verification for this thermal imaging lens to balance aperture size, detection distance and imaging range.

2. Mechanical & Environmental Specs

The lens uses M34×0.75 mounting structure to realize convenient installation and docking for different equipment hosts. The focus adjustment range covers two meters to infinity. The front‑element gains IP67 ingress protection capability. The allowable operating temperature spans from minus 40 degrees Celsius to plus 80 degrees Celsius to adapt to high‑temperature and low‑temperature field environments. Exposed optical surfaces are processed with AR anti‑reflection coating to cut down infrared energy reflection loss. BOSHI Optical Technology carries out mechanical structure reinforcement and environmental reliability test for this uncooled infrared lens.

3. Image Quality Specs

The transmittance index is no lower than 90 percent. Relative illumination keeps no less than 94 percent. Distortion value is controlled within minus 1.0 percent. BOSHI Optical Technology sets strict production inspection standards for this 8‑12μm lens. Every finished thermal imaging lens will go through multi‑item optical testing to guarantee stable and consistent image output quality in mass delivery.

Performance Advantages

1. Outstanding light gathering performance

The F1.0 large aperture design of this thermal imaging lens raises the intake amount of infrared photons significantly. When thermal radiation signal is weak in working environment, the signal‑to‑noise ratio of thermal image can be effectively lifted. More valid infrared signal enters the 640×512 detector, so target contour and temperature feature can be distinguished more clearly. BOSHI Optical Technology optimizes inner lens group layout to give full play to large aperture performance without sacrificing other optical indicators.

2. Fine imaging uniformity

AR anti‑reflection coating brings transmittance higher than 90 percent and maximizes the utilization rate of infrared energy. Relative illumination above 94 percent restrains image corner darkening phenomenon. The whole picture formed on detector surface maintains even brightness. Users will not encounter partial over‑dark area when observing targets. This long wave infrared lens keeps uniform imaging effect whether for near distance inspection or long‑distance monitoring.

3. Strong reliability for harsh environment

Benefiting from IP67 protection level of front‑element, dust and water can be kept away from key optical parts. Wide operating temperature range enables the uncooled infrared lens to operate normally under burning hot summer and freezing cold winter. The product supports round‑the‑clock outdoor continuous work. BOSHI Optical Technology completes dust proof, water proof and temperature impact verification, so the lens can maintain stable performance under complex outdoor weather.

4. Low distortion optical capability

Distortion is controlled within minus 1.0 percent. Geometric deformation of imaging picture is held at a low level. When operators implement size measurement and position observation for thermal targets, measurement deviation caused by lens distortion can be reduced. This feature makes this 50mm thermal imaging lens suitable for scenarios requiring high‑precision target analysis.

5. Wide focus adjustment capability

Focus interval from two meters to infinity is achieved via mechanical focusing mechanism. The same M34 mount lens can finish clear imaging for near‑range checked objects as well as far‑distance monitored targets. System integrators do not need to replace lens hardware when switching observation distance, which improves equipment application flexibility.

Application Fields

1. Perimeter security and border surveillance

This thermal imaging lens is embedded into outdoor thermal cameras in large quantity. Relying on the feature of all‑weather detection, it realizes intrusion identification and perimeter early warning day and night. Under total darkness, foggy weather or poor illumination conditions, the 640×512 detector matched with this long wave infrared lens can capture heat signal of intruding objects. BOSHI Optical Technology provides this optical component for many security equipment manufacturers to build perimeter defense systems.

2. Industrial thermal inspection

The uncooled infrared lens serves for temperature monitoring of industrial equipment. It can capture abnormal heat points to realize overheat fault diagnosis. Typical usage scenarios include factory equipment status check, power station equipment monitoring and pipeline heat leakage inspection. The high transmittance brought by AR coating ensures accurate restoration of object temperature information and helps staff find hidden equipment risks in advance.

3. Outdoor observation and search rescue

The 8‑12μm lens is assembled to infrared observation devices. It undertakes forest fire hazard early warning as well as field search and rescue missions. In night‑time or heavy fog environment where visible light fails to work, the 50mm focal length offers proper long‑distance observation capacity to locate heat sources such as fire points and trapped personnel. IP67 protection makes the lens adapt to open‑air complex climate in rescue sites.

4. Vehicle‑mounted infrared system

This F1.0 thermal imaging lens matches vehicle‑borne thermal modules. Vehicle platforms often face bumping vibration and sharp temperature shift. The mechanical structure and environmental performance verified by BOSHI Optical Technology make the lens output steady infrared optical effect under complicated road and weather conditions. It assists vehicle systems to perceive surrounding thermal targets.

5. Uncooled infrared camera assembly

BOSHI Optical Technology supplies this M34 mount thermal imaging lens as core optical component for OEM and ODM thermal camera manufacturers. Partners can complete camera product assembly by combining this lens with 640×512 detector and circuit modules. The product supports customized matching adjustment according to system requirements and meets mass production demands of infrared camera manufacturers.