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因为专业所以值得信赖,苏州监控摄像头安装_苏州迈凯隆系统集成科技有限公司
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    因为专业所以值得信赖,苏州监控摄像头安装

    2025-11-22 15:55:01 1987次浏览
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    监控摄像机除传统的球面镜头外,新一代的是非球面镜头(Aspherical Lens),镜片研磨的形状为抛物线、二次曲线、三次曲线或高次曲线,并且在设计时就考虑到了镜头的相差、色差、球差等校正因素,通常一片非球面镜片就能达到多个球面镜片矫正像差的效果,因此可以减少镜片的数量,使得镜头的精度更佳、清晰度更好、色彩还原更为准确、镜头内的光线反射得以降低,镜头体积也相应缩小。非球面镜头具有变倍高、物距短、光圈大的特点。变倍高可以简化镜头的种类,物距短可以应用在近距离监控摄像机的场合,光圈大则可以适应光线较暗的场所,因此应用领域日渐宽广。日本AVENIA的非球面镜头产品SSV0770,近摄距离可到750px,光圈值也可到F1.6,变焦范围可从7.0~70mm,变倍率高达十倍,可用于电视监控等领域。

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