THEIA SL183A Ultra-Wide-Angle Varifocal Lens 1.8-3mm F/1.8 CS-Mount with Image Stabilization

The THEIA SL183A is a high-performance ultra-wide-angle varifocal lens designed for security and surveillance cameras. With a focal length range of 1.8-3 mm and a fast F/1.8 aperture, it delivers exceptional low-light performance and a wide field of view. The lens features DC auto iris (P-Iris compatible) and Theia's Linear Optical Technology for distortion correction, ensuring clear and accurate images. Its metal/glass construction provides durability, and the CS-mount design ensures easy integration with compatible cameras.

Advantages

Ultra-wide-angle coverage with varifocal flexibility allows precise framing. The fast F/1.8 aperture excels in low-light conditions. Built-in image stabilization reduces blur from camera vibration. Distortion correction technology delivers true-to-life images. Rugged metal/glass construction ensures long-lasting performance.

Suitable for

• Security and surveillance cameras requiring wide-area coverage
• Indoor and outdoor installations where low-light performance is critical
• Applications needing distortion-free images for analytics or identification
• Integration with CS-mount cameras supporting DC auto iris or P-Iris

Key specifications

• Lens Type: Ultra-Wide-Angle Varifocal
• Focal Length: 1.8 - 3 mm
• Aperture: F/1.8
• Lens Mount: CS-Mount
• Iris Type: DC Auto Iris (P-Iris Compatible)
• Sensor Compatibility: Up to 1/2.7"
• Optical Distortion Correction: Yes (Theia's Linear Optical Technology)
• Image Stabilization: Yes
• Horizontal Angle of View (1/2.7" Sensor): 80° - 135°
• Minimum Object Distance (MOD): 0.2 m
• Resolution Support: Megapixel (up to 5MP+)
• Back Focal Length: 7.53 mm
• Optical Zoom: 1.67x
• Construction Material: Metal/Glass

Recommendations

For optimal performance, pair this lens with a compatible CS-mount camera that supports DC auto iris or P-Iris. Ensure the camera sensor is 1/2.7" or smaller to achieve the specified angle of view. This lens is ideal for wide-area surveillance in retail, transportation, and critical infrastructure.