6.2mm Tapered Cone Lens

Product Brief Description

ShangHai SILK Optical Technology CO., LTD offers the M7 lens, a compact optical lens engineered for small format camera lens integration with 1/2.7" image sensors. This 6.2mm fixed focal lens adopts 4-group lens assembly design, delivering balanced imaging performance for miniature camera hardware. Boasting a maximum image circle of Ø7.0mm, this wide angle miniature lens supports diagonal 74° field‑of‑view to capture sufficient scene coverage. As a low CRA lens with chief ray angle below 15°, it perfectly matches common CMOS sensors and reduces vignetting risk, paired with 58.0% high relative illumination to maintain uniform brightness across the whole frame. Built with M7 compact mount, this surveillance optical lens features short total track length at 13.42±0.3mm, well‑suited for space‑constrained device housing. Manufactured by ShangHai SILK Optical Technology CO., LTD, this compact optical lens undergoes strict optical testing to guarantee consistent output for mass‑produced embedded vision devices.

Detailed Product Description

1. Parameter Analysis

- Focal performance: This 6.2mm fixed focal lens provides 6.2±5%mm effective focal length, with F/NO 2.6±5% aperture, balancing light intake and depth of field for daily indoor‑outdoor imaging scenarios.

- Mechanical dimension: Total TTL reaches 13.42±0.3mm, BFL is 6.5±0.2mm; M7 mount ensures easy assembly for small‑sized camera modules.

- Optical structure: 4‑group lens assembly realizes compact optical layout, maximum image circle Ø7.0mm, perfectly fit 1/2.7" sensor target size.

- Field of view: Wide angle miniature lens delivers 74° diagonal, 62° horizontal, 33.5° vertical field‑of‑view. TV distortion is ‑12.00%, suitable for general monitoring without ultra‑low‑distortion requirements.

- Optical indexes: 58.0% relative illumination; as a low CRA lens, CRA＜15°, which greatly lessens dark corner issue for CMOS sensors.

ShangHai SILK Optical Technology CO., LTD strictly controls tolerance for every key parameter to keep batch consistency of this M7 lens.

2. Performance Advantages

- Compact form factor: As a compact optical lens, ultra‑short overall length adapts to highly‑miniaturized camera module structures, saving internal device space.

- Sensor compatibility: Optimized for 1/2.7" small format camera lens solution; low CRA lens characteristic avoids sensor sensitivity drop at image edges.

- Uniform screen brightness: High relative illumination maintains usable brightness across full frame, reducing post‑processing workload for embedded vision systems.

- Practical wide‑angle coverage: This wide angle miniature lens supplies decent field‑of‑view for capturing more scene information with limited camera quantity.

- Reliable assembly: Standard M7 mount brings stable mechanical positioning; ShangHai SILK Optical Technology CO., LTD completes full optical inspection before delivery for this surveillance optical lens.

3. Application Fields

- Miniature surveillance cameras: This surveillance optical lens fits tiny home security cameras, compact IP camera modules for indoor monitoring.

- Embedded vision equipment: The compact optical lens works for small‑size industrial auxiliary cameras built inside smart household devices.

- IoT visual terminals: 6.2mm fixed focal lens integrates into smart door cameras, visual access control devices adopting 1/2.7" sensors.

- Consumer miniature imaging: This small format camera lens applies to compact visual collection hardware requiring moderate wide‑angle view.

- Custom miniature optical modules: 4‑group lens assembly structure supports customized secondary matching for special miniature vision projects by ShangHai SILK Optical Technology CO., LTD.