I. Key Specifications at a Glance

Model: JSD9928

Interface: M18 (industrial standard thread for easy installation)

Focal Length (EFL): 9.49mm (wide-angle view)

Aperture: F2.8 (large aperture for ample light intake)

Field of View (FoV):

Horizontal (Hfov): 71.7°

Diagonal (Dfov): 82°

Vertical (Vfov): 51.4° (wide coverage for large scenes)

Distortion: < -0.2% (virtually imperceptible deformation)

Lens Structure: 2 glass + 4 plastic elements (2G4P), 6 precision-engineered lenses

Total Length (TTL): 18mm (exceptionally compact!)

Compatible Sensor: 1/1 inch (universal for mainstream small sensors)

II. Three Core Advantages

1. Ultra-Low Distortion (< -0.2%)

In plain terms: Captures straight lines without bending, squares without warping!

Technical insight: Distortion below 0.2% ensures minimal barrel/pincushion effects at edges, preserving geometric accuracy.

How it works: Precision alignment of 6 lenses (2 glass + 4 plastic), with aspherical elements suppressing edge light deviation.

Applications:

Industrial inspection: Accurate edge measurements reduce misjudgment.

Security monitoring: Faces/license plates remain undistorted at frame edges for reliable recognition.

Drone aerial mapping: Critical for architecture and cartography requiring true-to-scale geometry.  

2. Compact Design (TTL: 18mm)

In plain terms: Small size, massive capability!

Technical insight: 18mm length + M18 interface, 30% shorter than comparable wide-angle lenses, lightweight (≈100g), and space-saving.

How it works: Optimized optical path with zero-redundancy 2G4P lens arrangement.

Applications:

Embedded devices: Endoscopes, AR glasses where space is limited.

Portable drones: Lightweight design extends battery life and agility.

Mobile robots: Unobtrusive for navigation in tight spaces.

3. Low-Light Imaging (F2.8 Large Aperture)

In plain terms: Bright, clear imaging even in darkness!

Technical insight: F2.8 aperture doubles the light intake compared to F4. Paired with a 1/1-inch sensor, it boosts SNR and suppresses noise.

How it works: Large aperture + high-transmittance lens coating (e.g., nano AR coating) maximizes light utilization.

Applications:

Night surveillance: Usable footage in dimly lit areas (e.g., warehouses, streets).

Dashcams: Captures critical details in tunnels, rain, or low-light accidents.

Underwater robots: Acts as a "night vision" tool in deep-sea darkness.

III. Why These Advantages Matter

Ultra-low distortion → Precision imaging: Reduces AI vision correction costs (e.g., OCR, dimensional measurement).

Compact design → Flexible deployment: Enables integration into wearables, micro-robots, and space-constrained devices.

Low-light imaging → 24/7 operation: Uninterrupted monitoring, exploration, and rescue missions regardless of ambient light.

IV. Recommended Applications

1. Security cameras: 4K surveillance for residential/commercial areas, with reliable night vision.

2. Industrial vision inspectors: PCB defect detection with edge accuracy, reducing false negatives.

3. Drone gimbal cameras: Lightweight aerial mapping with distortion-free architecture shots and clear night views.

4. Vehicle ADAS systems: Enhanced low-light recording for accident liability verification.

5. Medical endoscopes: Compact size + high resolution for wider, more accurate surgical fields.

Ideal for: High-precision vision systems, space-constrained devices, and 24/7 smart hardware!

Note: Technical terms (e.g., TTL, FoV) are standardized to align with industry norms.