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平凹透镜的焦距是负焦距，平行光束通过平凹透镜后会呈发散状，我公司生产的透镜，均匀性好，无纹理，杂质，气泡。
产品参数：
材料：K9
尺寸容差：+0.0/-0.2mm
表面精度：λ/4 @632.8nm
光洁度：60-40
中心偏差：3-5 arc min
通光孔径：>90%
倒边：0.3mm×45°
| Part Number | D(mm) | EFL(mm) | Tc(mm) | Te(mm) | BFL(mm) |
| LOPCCB3-5 | 3.00 | -5.00 | 1.00 | 1.21 | -5.55 |
| LOPCCB6-6 | 6.00 | -6.00 | 2.00 | 5.50 | -7.37 |
| LOPCCB6-8 | 6.00 | -8.00 | 2.00 | 3.30 | -9.30 |
| LOPCCB6-10 | 6.00 | -10.00 | 2.00 | 2.90 | -11.30 |
| LOPCCB6-12 | 6.00 | -12.00 | 2.00 | 4.20 | -13.30 |
| LOPCCB6-24 | 6.00 | -24.00 | 2.00 | 2.37 | -25.32 |
| LOPCCB9-27 | 9.00 | -27.00 | 2.00 | 2.75 | -28.30 |
| LOPCCB10-15 | 10.00 | -15.00 | 2.00 | 4.10 | -16.40 |
| LOPCCB10-20 | 10.00 | -20.00 | 2.00 | 3.50 | -21.40 |
| LOPCCB10-25 | 10.00 | -25.00 | 2.00 | 3.10 | -26.40 |
| LOPCCB10-30 | 10.00 | -30.00 | 2.00 | 2.90 | -31.40 |
| LOPCCB12.7-15 | 12.70 | -15.00 | 2.00 | 5.90 | -16.40 |
| LOPCCB12.7-19 | 12.70 | -19.00 | 1.70 | 4.03 | -20.12 |
| LOPCCB12.7-25.4 | 12.70 | -25.40 | 3.00 | 4.90 | -27.20 |
| LOPCCB12.7-30 | 12.70 | -30.00 | 3.00 | 4.37 | -31.98 |
| Part Number | D(mm) | EFL(mm) | Tc(mm) | Te(mm) | BFL(mm) |
| LOPCCB12.7-50 | 12.70 | -50.00 | 2.50 | 3.29 | -51.65 |
| LOPCCB12.7-75 | 12.70 | -75.00 | 2.50 | 3.02 | -76.65 |
| LOPCCB12.7-100 | 12.70 | -100.00 | 2.50 | 2.89 | -101.65 |
| LOPCCB15-20 | 15.00 | -20.00 | 2.00 | 3.80 | -21.30 |
| LOPCCB15-25 | 15.00 | -25.00 | 2.00 | 3.70 | -26.30 |
| LOPCCB15-30 | 15.00 | -30.00 | 2.00 | 3.70 | -31.30 |
| LOPCCB15-35 | 15.00 | -35.00 | 2.00 | 3.80 | -36.30 |
| LOPCCB20-30 | 20.00 | -30.00 | 2.00 | 6.30 | -31.40 |
| LOPCCB20-50 | 20.00 | -50.00 | 2.00 | 4.30 | -51.40 |
| LOPCCB20-80 | 20.00 | -80.00 | 2.00 | 3.40 | -81.40 |
| LOPCCB25.4-25 | 25.40 | -25.00 | 2.50 | 13.05 | -26.65 |
| LOPCCB25.4-50 | 25.40 | -50.00 | 2.50 | 5.84 | -51.65 |
| LOPCCB25.4-75 | 25.40 | -75.00 | 2.50 | 4.64 | -76.65 |
| LOPCCB25.4-100 | 25.40 | -100.00 | 2.50 | 4.08 | -101.65 |
| LOPCCB25.4-150 | 25.40 | -150.00 | 2.50 | 3.55 | -151.65 |
| LOPCCB25.4-175 | 25.40 | -175.00 | 2.00 | 3.50 | -176.30 |
| LOPCCB25.4-200 | 25.40 | -200.00 | 2.50 | 3.28 | -201.65 |
| LOPCCB25.4-250 | 25.40 | -250.00 | 2.00 | 3.50 | -251.30 |
| LOPCCB25-30 | 25.00 | -30.00 | 2.00 | 10.00 | -31.40 |
| LOPCCB25-50 | 25.00 | -50.00 | 2.00 | 5.70 | -51.40 |
| LOPCCB25-80 | 25.00 | -80.00 | 2.00 | 4.20 | -81.40 |
| Part Number | D(mm) | EFL(mm) | Tc(mm) | Te(mm) | BFL(mm) |
| LOPCCB30-50 | 30.00 | -50.00 | 2.00 | 2.50 | -51.30 |
| LOPCCB30-60 | 30.00 | -60.00 | 2.00 | 2.30 | -61.30 |
| LOPCCB30-70 | 30.00 | -70.00 | 2.00 | 3.50 | -71.30 |
| LOPCCB40-80 | 40.00 | -80.00 | 2.00 | 4.50 | -81.30 |
| LOPCCB50-90 | 50.00 | -90.00 | 2.00 | 4.50 | -101.30 |
| LOPCCB50-100 | 50.00 | -100.00 | 3.00 | 9.40 | -102.00 |
| LOPCCB50-125 | 50.00 | -125.00 | 3.00 | 5.00 | -152.00 |
| LOPCCB50-150 | 50.00 | -150.00 | 3.00 | 7.10 | -152.00 |
| LOPCCB50-175 | 50.00 | -175.00 | 3.00 | 2.50 | -176.30 |
| LOPCCB50.8-75 | 50.80 | -75.00 | 2.50 | 11.98 | -76.65 |
| LOPCCB50.8-100 | 50.80 | -100.00 | 2.50 | 9.17 | -101.65 |
