Stock code 
Security Camera Lens
UN0391 Fixed Focus Lens, 1/2.7' Sensor, 4mm, F2.2 Aperture
- High refractive-index (RI) optics deliver superior image quality
UN0391 features a 4 mm fixed-focus lens, F2.2 large aperture, and a 1/2.7' sensor, UN0391 features a 4 mm fixed-focus lens, an F2.2 large aperture, and a 1/2.7" sensor. Its day-and-night confocal technology ensures consistently clear imaging around the clock without requiring manual adjustment. With an 87.6° horizontal field of view, Ø6.9 mm image circle, high relative illumination (> 40%), and low distortion (≥–13%), it provides uniform brightness and true-to-life image quality. Compact and easy to integrate, the fixed focus lens is an ideal, cost-effective optical solution for HD surveillance and smart devices, ideally suited for large-scale project applications.
- Part Number: UN0391
- Sensor Type: 1/2.7'
- Focal Length: 3.99mm±5%
- FNo.: 2.2±5%
- Total Length: 22.5±0.3mm
- Mechanical BFL: 5.25±0.2mm
- Max Image Circle: ∅6.9mm
- Optical FOV (D): 105°±3°(∅6.609mm)
- Optical FOV (H): 87.6°±3°(∅5.76mm)
- Optical FOV (V) : 47.0°±3°(∅3.24mm)
- Relative Illumination: ≥40%
- Distortion: ≥-15%
- Chief Ray Angle: 15.3°±3°
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