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Security Camera Lens
UN0399 Fixed Focus Lens, 1/2.7' Sensor, 3.05mm, F2.2 Aperture
- Ultra-wide fixed-focus lens for broader coverage
- 133.1° diagonal field of view with day-night co-focus for seamless monitoring
UN0399 features a 3.05 mm fixed-focus lens, F2.2 large aperture, and a 1/2.7' sensor. Its day-night co-focus technology ensures stable, sharp imaging 24/7 without manual adjustment. With a 107.7° horizontal and 133.1° diagonal ultra-wide field of view, it provides extensive coverage and minimizes blind spots. The Ø6.8 mm image circle, low distortion (≥–17%), and compact structure make it easy to integrate into smart home and security camera systems - an ideal, cost-effective choice for large-scale commercial applications.
Specification
- Part Number: UN0399
- Sensor Type: 1/2.7'
- Focal Length: 3.05mm±5%
- FNo.: 2.2±5%
- Total Length: 22.55±0.3mm
- Mechanical BFL: 4.95±0.2mm
- Max Image Circle: ∅6.8mm
- Optical FOV (D): 133.1°±5°
- Optical FOV (H): 107.7°±5°
- Optical FOV (V): 57.9°±5°
- Relative Illumination: 36%±5%
- TV Distortion: ≥-17%
- Chief Ray Angle: 14.9°±3°
Why Us

Design and R&D
Union Optech has established sales and technical centers in Japan, South Korea, and Canada, with a dedicated production base in Thailand. These global sites allow us to work closely with customers and provide localized technical support for optical design and development.

Manufacturing Capabilities
With 61 production lines, we achieve a monthly capacity of 10 million fixed-focus lenses and 2 million zoom lenses. We also maintain in-house manufacturing capability to process 60 sets of optical lens molds and 100 sets of precision component molds each month, ensuring efficiency from design to mass production.

Quality Control
Our facilities support both contact measurement (with accuracy up to 0.08 μm) and non-contact precision inspection. The company is certified to ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 standards, and its laboratory is accredited by the China National Accreditation Service (CNAS) for national-level testing and calibration.
Have questions? Let’s talk.
Our optical experts are ready to help you find the right precision optical lens or assembly solution for your imaging, sensing, or display application.
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