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JSD2112 The Dark-Light Specialized Lens: F/NO 1.2 Ultra-Large Aperture, 2.16mm for 1/2.8”

Release time:2025/12/5 16:42:50 Article source: SHENZHEN JSD OPTOELECTRONICS CO.,LTD

In the realm of machine vision, specialized surveillance, and sophisticated embedded systems, the greatest challenge often lies in overcoming poor illumination. The JSD2112 is a game-changing M12 S-Mount lens specifically engineered as a dark-light solution. Its design deviates sharply from standard consumer optics, focusing on maximizing light throughput and wide-area coverage for industrial and professional grade 5MP imaging modules.

The Power of F/NO 1.2: Mastering the Dark

The cornerstone of the JSD2112's performance is its immense F/NO of 1.2. This ultra-large aperture is a fundamental optical advantage that directly addresses the deficiencies of imaging in dimly lit environments.

Maximum Photon Capture: The F1.2 rating translates directly into a significantly higher light collection efficiency compared to common F1.6 or F2.0 lenses. This means the lens can deliver substantially more light to the 1/2.8 sensor, even in near-dark conditions.

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Superior Signal-to-Noise Ratio (SNR): By providing more optical light, the system's reliance on electronic gain (amplification) is dramatically reduced. This is a critical feature, as lower gain means a cleaner image, a better SNR, and less digital noise. For applications like Automated Number Plate Recognition (ANPR) or remote monitoring, this precision in low-light detail is non-negotiable.

5MP Clarity 24/7: The enhanced light performance ensures that the full 5MP resolution is utilized around the clock. This upholds the Logic that high-definition image data must remain consistent and reliable regardless of environmental factors.

The 2.16mm 172° Advantage: Complete Vision

Beyond its low-light capability, the JSD2112 delivers an expansive field of view essential for comprehensive scene capture in specialized applications.

Extreme 172° FoV: The 2.16mm Effective Focal Length (EFL) provides a near-panoramic view, crucial for covering vast areas in industrial halls, vehicle interiors, or security perimeters with minimal sensor deployment. This allows for cost-effective and structurally simplified designs.

Controlled Distortion for Machine Vision: Ultra-wide lenses typically suffer from severe barrel distortion. However, the JSD2112's advanced design keeps this artifact controlled at <-1.1%. For robotic guidance, metrology, or any system requiring accurate measurement, this controlled geometry is essential for reliable, repeatable results.

Optimized for Embedded and Professional Systems

The JSD2112 is designed not for casual photography, but for tight, integrated professional modules:




Parameter

Specification

Professional Value Proposition

Aperture (F/NO)

1.2

Dark-Light Master: Unmatched sensitivity for 24/7 operation.

Field of View (FoV)

172°

Maximum Coverage: Ideal for panoramic and situational awareness systems.

Sensor Match

1/2.8” 5MP

Pixel Perfect: Full utilization of high-definition sensor capacity.

Thread/Size

M12, TTL: 17.41mm

Embedded Ready: Compact, standard form factor for seamless integration.

This lens serves as the optical foundation for next-generation security systems, autonomous machine guidance platforms, professional remote monitoring equipment, and sophisticated IoT devices that demand uncompromising visual data acquisition. The JSD2112 provides the competitive edge by turning ambient darkness into actionable high-definition light.