Applications of 5-50mm security camera lens

The application scenarios of 5-50 mm surveillance lenses are primarily categorized according to the variations in field of view resulting from changes in focal length. The specific applications are as follows:

1. Wide-angle range (5-12 mm)

Panoramic monitoring for confined spaces A focal length of 5-8 mm (with a field of view of 60 degrees -90 degrees ) is suitable for enclosed small areas within 5 times 5 meters, such as elevator cabins and lobbies. This configuration enables broad coverage, although detail clarity may be relatively limited.

Indoor medium-range monitoring A focal length of 8-12 mm (with a field of view of 40 degrees -50 degrees ) is appropriate for medium-distance environments ranging from 10 to 18 meters, such as office corridors or small retail stores. It provides a balanced trade-off between coverage breadth and target identification capability.

2. Medium-to-long focal length range (12-25 mm)

Road and square surveillance A focal length of 12-16 mm (with a field of view of 30 degrees -40 degrees ) is ideal for monitoring zones extending 20 to 30 meters, such as main roads in residential communities or parking lots. This range facilitates effective capture of license plate information and pedestrian characteristics. Zoom lenses offer distinct advantages in these contexts, enabling dynamic surveillance through flexible focal length adjustment.

Monitoring for objects falling from heights A focal length of 16-25 mm (with a field of view of 20 degrees -30 degrees ) is commonly employed for observing the exterior facades of high-rise residential buildings (14 to 30 stories). It is recommended to integrate infrared illumination devices to ensure consistent image quality during nighttime operations.

3. Long focal length range (25-50 mm)

Long-distance detail acquisition A focal length of 25-50 mm (field of view < 20 degrees ) is designed for long-range surveillance over distances of 30 to 50 meters. Typical use cases include ports, border checkpoints, and similar critical infrastructure. To improve target recognition accuracy, integration with high-resolution image sensors is advised. For example, a 50 mm lens can clearly resolve vessel details in riverine monitoring applications; however, careful attention must be paid to the alignment between working distance and image plane distance.

Specialized application scenarios Zoom lenses enable seamless transition from wide-angle panoramic observation to telephoto-level detail tracking, making them widely adopted in public spaces such as shopping malls and transportation hubs. In industrial inspection, lenses within the 25-50 mm range are well-suited for precision component examination on manufacturing lines.

4. Technical considerations

- Distortion control: Barrel distortion is more pronounced at the wide-angle end. It is recommended to mitigate this through digital image correction algorithms or optimized framing techniques. - Lighting conditions: The telephoto end is more sensitive to low-light environments. Utilizing large-aperture lenses (e.g., F1.6) or supplementary illumination systems can significantly enhance imaging performance under dim lighting. - Installation requirements: For outdoor deployments, environmental protection ratings (e.g., IP66) and wide operating temperature ranges should be considered to ensure reliable system operation under challenging climatic conditions.

The 5 MP 5-50 mm zoom lenses manufactured by Jinyuan Optoelectronics, featuring a CS mount and compact design, are compatible with 1/2.7 and 1/2.9 format CCD image sensors. These lenses deliver high-definition imaging performance and broad focal length coverage, effectively addressing diverse surveillance demands. They represent an optimal solution for professional video security systems.

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Country: China
Website: https://www.jylens.com/

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