9.1mm focal length Thermal Imaging Lens

Product Brief

Manufactured by BOSHI Optical Technology, this premium long‑wave infrared lens delivers outstanding imaging performance as a high‑end uncooled thermal lens solution. This thermal imaging lens features 9.1mm focal length together with ultra‑large F1.0 aperture and pairs well with 640×512 detector with 12μm pixel pitch. Equipped with HD coating and IP67 protection for front optical element, it achieves high transmittance across 8‑12μm working waveband. The compact M17×0.5 mount supports focusing range from 3 meters to infinity. It maintains stable optical output within temperature span of ‑40℃ to +80℃ and brings high relative illumination alongside controlled distortion. It suits all‑weather field deployment and serves as ideal optical core for compact portable thermal camera devices covering industrial monitoring as well as security inspection scenarios.

Detailed Product Description

Parameter

1.Optical performance parameters. This long‑wave infrared lens adopts 9.1mm focal length and F1.0 F‑number. Its working wavelength falls within standard long‑wave infrared 8‑12μm waveband. Diagonal field of view reaches 62.4 degrees, horizontal field of view reaches 48.1 degrees and vertical field of view reaches 38.5 degrees. Such field‑of‑view configuration grants this thermal imaging lens powerful wide‑area observation capacity. Large aperture design helps gather sufficient infrared radiation under complex ambient conditions.

2.Detector matching parameters. BOSHI Optical Technology optimizes this uncooled thermal lens for 640×512 detector with 12μm pixel pitch. The optical structure matches the mainstream compact thermal sensor modules in market. The optical footprint aligns with detector target surface so as to give full play to detector resolution performance and avoid image vignetting or resolution waste caused by mismatching.

3.Mechanical and environmental parameters. The product applies M17×0.5 threaded mount to realize convenient mechanical assembly. Focus range covers 3 meters to infinity and meets detection requirement for both near‑range and far‑range targets. Operating temperature ranges from ‑40℃ to +80℃ to adapt diverse extreme climate conditions. Front optical element reaches IP67 ingress protection grade to resist dust and water intrusion from outside environment.

4.Optical quality metrics. Optical transmittance of this thermal imaging lens achieves no less than 90 percent. Relative illumination stays above 84 percent and distortion value keeps below negative 10 percent. Exposed optical surfaces are processed with HD coating. High transmittance lowers infrared signal loss. Good relative illumination guarantees uniform brightness distribution for full frame image. Controlled distortion suppresses image deformation of wide‑angle field of view.

Performance Advantages

1.Ultra‑large F1.0 aperture advantage. The F1.0 large aperture of this long‑wave infrared lens collects more infrared radiation energy. Under low‑temperature and low‑radiance working environments, imaging sensitivity gets notable improvement and effective detection distance gets further promoted. BOSHI Optical Technology carries out repeated optical simulation for aperture structure so as to balance light intake capacity and aberration control performance.

2.High transmittance and HD coating advantage. HD coating applied on exposed surfaces brings above 90 percent optical transmittance for this uncooled thermal lens. The coating layer restrains surface reflection effect effectively. Image contrast gets enhanced and ghost image interference gets reduced. Less infrared energy gets lost during transmission process and valid infrared signal entering detector gets increased.

3.Excellent edge illumination advantage. Relative illumination higher than 84 percent makes brightness performance even across the whole image frame. Many wide‑angle thermal imaging lens products suffer obvious dark‑corner phenomenon at frame edges. This thermal imaging lens overcomes such defect through optical layout optimization and guarantees clear details for marginal observation area.

4.IP67 front‑end waterproof structural advantage. Front optical element reaches IP67 protection standard. Dust and water splashes cannot affect inner optical components. Users may deploy this lens for outdoor all‑weather usage without configuring extra protective housings. The structural design cuts system integration cost for terminal thermal camera equipment.

5.Broad temperature adaptability advantage. This long‑wave infrared lens maintains stable imaging performance from ‑40℃ to +80℃. The product introduces effective thermal defocus suppression mechanism. When ambient temperature changes drastically, thermal defocus extent remains at a low level. Frequent manual refocus operation is no longer required for devices equipped with this uncooled thermal lens.

6.Compact M17×0.5 mount interface advantage. M17×0.5 threaded mount owns small mounting occupation space. It brings great convenience for integration work of miniature thermal cameras, drone payload equipment and handheld thermal devices. Terminal product volume and weight can be well controlled while optical performance is reserved.

Application Field

1. Security and perimeter surveillance scenarios. This thermal imaging lens fits outdoor border defense work, factory perimeter monitoring and unattended site early warning tasks. It can detect intruder targets under complete‑darkness conditions. BOSHI Optical Technology accumulates rich project experience for security‑oriented lens development. This long‑wave infrared lens acts as core optical component for lots of perimeter early‑warning thermal camera products.

2. Industrial predictive maintenance scenarios. Equipped with this uncooled thermal lens, thermal camera equipment completes thermal inspection work for electrical equipment, pipeline temperature monitoring work and mechanical overheating fault diagnosis work. Staff can spot hidden equipment risk in advance through temperature distribution data captured by this thermal imaging lens so as to realize predictive maintenance and lower unexpected shutdown loss.

3. Unmanned aerial vehicle payload scenarios. This long‑wave infrared lens serves aerial thermal survey, forest fire prevention and search‑and‑rescue missions. The compact M17×0.5 mount helps the lens adapt limited installation space of drone payload. IP67 protection enables stable operation under outdoor aerial working environment. Wide field‑of‑view feature supports large‑range ground area scanning.

4. Handheld thermal imaging device scenarios. This thermal imaging lens is applicable to portable firefighting thermal cameras, emergency rescue equipment and building energy loss detection instruments. Handheld devices put forward strict requirement on component volume and weight. The compact‑structured uncooled thermal lens matches handheld product design idea and offers reliable thermal imaging output for field operators.

5. Vehicle‑mounted thermal vision scenarios. This long‑wave infrared lens supports automotive night vision function and off‑road driving auxiliary imaging. It supplies valid imaging output under full‑dark driving conditions and assists drivers to identify road obstacles and potential hazards in night driving process. IP67 grade can cope with complex weather conditions during vehicle running.

6. Wildlife observation and environmental monitoring scenarios. This thermal imaging lens supports animal population monitoring, wildfire early warning and outdoor ecological research work. It captures thermal radiation signal of wildlife targets without extra light source. The lens works stably in open wild environment with support of IP67 protection and wide temperature adaptability.