16mm Cone Lens

Product Brief:

Developed by BOSHI Optical Technology, the PL‑1645F‑M12 is a compact fixed‑focus cone lens built around 16mm focal length and F4.5 specifications to serve 1/2" sensor imaging hardware. This M12 mount optical assembly adopts full‑glass four‑element structure, delivering 28.3°FOV alongside 8.5mm image circle to match 1/2" sensor and smaller image sensors for space‑limited board‑level camera optics systems. It reaches 95 percent high relative illumination and realizes low distortion performance with TV distortion value of ‑0.25 percent. Its mechanical back focal length measures 3.65 mm and overall total track length hits 28.65 mm for easy embedding into compact camera modules. Created for machine vision and other embedded imaging scenarios from industrial inspection to biometric identification, the lens from BOSHI Optical Technology tightly controls chief ray angle under 8 degrees to restrain vignetting and color shift when cooperating with mainstream CMOS sensors. It balances resolution, miniaturized dimension and cost efficiency, and fits factory automation, logistics barcode reading and medical imaging devices for stable and authentic image output.

Product Detailed Description:

1. Detailed Parameter

- EFL Focal Length is 16mm with tolerance of plus or minus 5 percent. This parameter offers moderate telephoto viewing effect. BOSHI Optical Technology calibrates this focal length to support object recognition tasks within working distance ranging from 100 mm to 2000 mm, which is suitable for multiple machine vision working stations.

- Aperture F number is F4.5 with tolerance of plus or minus 5 percent. This setting strikes good balance between light intake capacity and depth of field. It maintains fine resolution performance for both indoor operating environment and well‑lit outdoor application scenarios.

- Optical Construction uses four all‑glass elements. Compared with mixed plastic‑glass optical groups, this all‑glass solution brings better thermal stability and higher light transmittance. It also strengthens resistance against external environmental erosion for long‑term stable operation.

- Maximum image circle reaches 8.5mm. This 8.5mm image circle can fully cover 1/2" sensor whose diagonal dimension is roughly 8 mm. Meanwhile it maintains backward compatibility for 1/2.3 inch and 1/3 inch image sensors.

- Mechanical Back Focal Length equals 3.65 mm with tolerance of plus or minus 0.2 mm. Such design allows convenient assembly with standard M12 sensor boards. System developers can install optional IR‑cut filter holders without extra structural modification.

- Total Track Length is 28.65 mm with tolerance of plus or minus 0.3 mm. The short overall dimension adapts to miniaturized camera equipment including drones, handheld imaging apparatus and surveillance camera nodes.

- TV Distortion registers at ‑0.25 percent. This low distortion characteristic suppresses barrel distortion to nearly invisible level. It satisfies strict precision requirement of measurement work and OCR character reading work.

- Relative Illumination achieves 95.0 percent. Such high relative illumination keeps uniform brightness across whole picture frame, which lowers the requirement for flat‑field correction during post‑image processing.

- CRA Chief Ray Angle stays below 8 degrees. The parameter matches microlens layout of mainstream 1/2" sensor products from Sony, ON Semi as well as OmniVision. It effectively avoids peripheral color shading phenomenon.

- Mount specification applies M12 multiplied by P0.5 thread. This widely accepted industrial standard mount supports quick lens replacement and active alignment adjustment.

2. Performance Advantages

- Superior image uniformity paired with low distortion. The lens from BOSHI Optical Technology owns 95 percent high relative illumination and ‑0.25 percent distortion. When deployed for machine vision work, it generates geometric precise images with insignificant brightness drop at image edges. It cuts computing pressure brought by extra algorithm correction inside machine vision software workflow.

- Chief ray angle tuned for modern image sensors. Controlled chief ray angle under 8 degrees prevents color artifacts at frame edges. The 1/2" sensor compatible M12 mount lens realizes stable white balance and consistent color reproduction over full 28.3°FOV. This merit carries great significance for facial recognition projects and color‑based material sorting operations.

- High durability brought by all‑glass optical structure. Four‑piece all‑glass optical group prevents focal position drift caused by temperature variation within temperature range from minus 20 degrees Celsius to plus 70 degrees Celsius. The M12 mount lens keeps dependable running status on factory production floors, outdoor self‑service kiosks and auxiliary vehicle cameras.

- Space‑saving mechanical framework. Total track length of merely 28.65 mm allows installation inside narrow equipment housings. 3.65 mm mechanical back focal length reserves sufficient physical space for cover glass or multi‑layer filter combination. This simplifies mechanical development work for system integrators adopting this board‑level camera optics component.

- Convenient plug‑and‑play interoperability. Standard M12 mount thread together with normative back focal distance permits direct substitution of existing lenses. Camera OEM manufacturers do not need to conduct major mechanical redesign. The component shortens product research and launch cycle for end devices..

3. Application Domain

- Industrial Machine Vision. With 16mm focal length and F4.5 aperture setting, this M12 mount lens performs well in production line defect inspection tasks such as PCB circuit board checking and surface scratch detection. Low distortion property guarantees measurement accuracy when moderate magnification is required for machine vision inspection stations.

- Biometrics and Access Control. Matching with 1/2" sensor, the lens captures clear iris detail and facial feature information under working distance of 30 cm to 50 cm. Its chief ray angle below 8 degrees supports NIR enhanced sensors working with active infrared light source, so it fits biometric access control terminals.

- Logistics and Barcode Reading. 28.3°FOV and high relative illumination support steady decoding for one‑dimensional and two‑dimensional barcodes of packages in different sizes. Reliable code recognition can be accomplished even under uneven ambient lighting inside logistics sorting workshops.

- Embedded OEM Systems. This board‑level camera optics with M12 mount can be mass produced for multiple embedded devices including drone obstacle avoidance modules and medical endoscopy equipment. BOSHI Optical Technology supplies complete optical documents and mechanical reference materials to speed up system integration progress for OEM partners.

- Smart Retail and Shelf Monitoring. Benefiting from low distortion performance, the lens supports exact calculation of product dimension and shelf planogram compliance verification. Its compact physical outline makes it suitable for hidden installation on ceiling or shelf edge retail monitoring cameras.