Blunith 5009S 50mm F0.9 Lens

Designed for compatibility with a broad range of thermal camera cores, this infrared lens provides a balanced solution between performance and cost for mid-to-long range applications.

Its manual focus mechanism enables clear imaging from 3 m to infinity. The optimized optical design ensures high image clarity and uniformity, making it suitable for surveillance and industrial monitoring. This lens supports high-resolution detector configurations.

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    Specs

    5009S  35mm F0.9
    Property Value
    Focal Length 50mm
    F/# 0.9
    External Coating HD
    Working Band 8-12 μm
    Transmittance ≥ 90%
    Distortion <1%
    Relative Illuminance >98%
    MTF 0F ≥ 0.30@42lp/mm
    0.8F ≥ 0.25@42lp/mm
    Focusing Type Manual
    Focusing Range 3m – ∞
    Operation Temperature -40℃ to 80℃
    Sealing IP67
    Lens Material IRG 206

    Application

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