产品简介：BT4M系列双远心镜头专为2/3"以上靶面设计的双远心镜头。***大可覆盖到4/3"(对角线22.6mm)的成像靶面。针对不同种类的相机设计了C和F两种接口的产品。产品特点：适合1"及其以下靶面各种C或F接口相机；适合大尺寸物体的高精密检测，如电器元件、电路板、机械零件等远心度小，分辨率高、低于0.1%的畸变在景深范围内，没有放大倍率的变化***大适合4/3"靶面相机规格参数：型号放大倍率视场物距①(mm)光圈F#远心度②(deg.)畸变率(%)景深③(mm)接口长度④(mm)直径(mm)宽×高（mm）CCD靶面尺寸(1″)(1.2″)(4/3″)BT4M-16C1.05512.1x9.114.4x14.417.2x12.94516<0.08<0.081.1C17145BT4M-16F1.05512.1x9.114.4x14.417.2x12.94516<0.08<0.081.1F15062BT4M-24C0.70018.3x13.721.7x21.725.9x19.46916<0.08<0.082.4C19445BT4M-24F0.70018.3x13.721.7x21.725.9x19.46916<0.08<0.082.4F16562BT4M-36C0.48626.3x19.731.3x31.337.2x28.010316<0.05<0.085C22261BT4M-36F0.48626.3x19.731.3x31.337.2x28.010316<0.05<0.085F19362BT4M-48C0.36934.7x26.041.2x41.249.1x36.913416<0.08<0.088.7C26175BT4M-48F0.36934.7x26.041.2x41.249.1x36.913416<0.08<0.088.7F23875BT4M-56C0.31440.8x30.648.4x48.457.6x43.315916<0.05<0.0412C27080BT4M-56F0.31440.8x30.648.4x48.457.6x43.315916<0.05<0.0412F24280BT4M-64C0.27546.6x34.955.3x55.365.8x49.518216<0.05<0.0415.7C312100BT4M-64F0.27546.6x34.955.3x55.365.8x49.518216<0.05<0.0415.7F281100BT4M-80C0.22158.0x43.568.9x68.982.0x61.722716<0.05<0.0424.4C347116BT4M-80F0.22158.0x43.568.9x68.982.0x61.722716<0.05<0.0424.4F318116BT4M-96C0.18668.7x51.581.6x81.697.1x73.028016<0.04<0.0434.2C392143BT4M-96F0.18668.7x51.581.6x81.697.1x73.028016<0.04<0.0434.2F363143BT4M-144C0.122104.7x78.6124.4x124.4148.1x111.339816<0.05<0.0479.5C537200BT4M-144F0.122104.7x78.6124.4x124.4148.1x111.339816<0.05<0.0479.5F512200BT4M-192C0.073174.9x131.1207.7x207.7247.3x185.853116<0.05<0.04148.1C682260BT4M-1***0.073174.9x131.1207.7x207.7247.3x185.853116<0.05<0.04148.1F653260①物距：前端物镜与物体的距离。使用时将其设定在标准值的&plu***n;3%之内可达到***佳分辨率和***低畸变。②远心度：镜头主射线的***大斜率：以毫拉德计算时镜头拍摄物每毫米物体位移的***大误差。③景深：虽然位于景深边缘的图像测量数据仍然有效，但是要想获得清晰图像，应尽量采用标称景深的一半。)