双凸透镜具有两个凸面,中间的焦距较长,边缘的焦距较短,导致正焦距。这种类型的透镜主要用于会聚来自点光源的光或将图像转移到其他光学系统。
光学双凸透镜的工作原理是基于折射定律。当光从一种介质转移到另一种介质时,其传播方向根据该定律而改变。在双凸透镜中,光从空气进入透镜,然后离开回到空气中,在每个界面处经历折射。由于透镜表面的曲率和材料的不同折射率,光线遵循通过透镜的特定路径,导致光的会聚或发散。
在成像系统中,双凸透镜通常用作物镜或目镜,以放大小物体或产生远处物体的清晰图像。例如,在显微镜中,双凸透镜用作物镜,会聚来自物体的光以形成放大的实像。然后,该图像被目镜进一步放大,最终向观察者呈现详细的视图。
规格 | 商业级规范. | 高精度规格. |
材料 | UV玻璃 (石英、熔融石英) | |
VIS glass (Schott、CDGM、OHARA等) | ||
直径 | Ø5mm ~ Ø600mm | |
直径公差 | ± 0.1mm | ± 0.05mm |
焦距公差 | ± 2% | ± 1% |
表面质量 | 60/40 | 40/20 |
偏心 | <3 arc min | <1arc sec |
表面图 | 3λ | 2λ |
表面不规则 | 1/4 λ | 1/10 λ |
通光孔径 | > 85% | > 90% |
倒角 | <0.2mmx 45° | <0.1mm x 45° |
涂层 | 根据客户的要求 |
类型编号 | 直径 | 焦距 | 边缘厚度 | 中心厚度 | 后焦距 | 曲率半径 |
φD( mm) | f( mm) | Te( mm) | Tc( mm) | fb( mm) | r( mm) | |
BK7-5-6 | 5 | 6 | 1.5 | 2.5 | 5.6 | 6.23 |
BK7-5-8 | 5 | 8 | 1.4 | 2.1 | 7.6 | 8.30 |
BK7-5-10 | 5 | 10 | 1.3 | 1.9 | 9.7 | 10.38 |
BK7-5-25 | 5 | 25 | 1.1 | 1.3 | 24.8 | 25.95 |
BK7-6-6 | 6 | 6 | 1.0 | 2.5 | 5.6 | 6.23 |
BK7-6-8 | 6 | 8 | 1.0 | 2.1 | 7.6 | 8.30 |
BK7-6-10 | 6 | 10 | 1.0 | 1.9 | 9.7 | 10.38 |
BK7-6-20 | 6 | 20 | 1.0 | 1.4 | 19.8 | 20.76 |
BK7-7-10 | 7 | 10 | 1.9 | 3.1 | 9.5 | 10.38 |
BK7-7-12 | 7 | 12 | 1.8 | 2.8 | 11.5 | 12.46 |
BK7-7-20 | 7 | 20 | 1.7 | 2.3 | 19.6 | 20.76 |
BK7-8-8 | 8 | 8 | 1.5 | 3.1 | 9.5 | 8.30 |
BK7-8-12 | 8 | 12 | 1.5 | 2.8 | 11.5 | 12.46 |
BK7-8-25 | 8 | 25 | 1.5 | 2.1 | 24.6 | 25.95 |
BK7-10-10 | 10 | 10 | 2.0 | 4.6 | 9.2 | 10.38 |
BK7-10-20 | 10 | 20 | 2.0 | 3.2 | 19.5 | 20.76 |
BK7-10-25 | 10 | 25 | 2.0 | 3.0 | 24.5 | 25.95 |
BK7-10-50 | 10 | 50 | 2.0 | 2.5 | 49.6 | 51.90 |
BK7-10-60 | 10 | 60 | 2.0 | 2.4 | 59.6 | 62.28 |
BK7-10-70 | 10 | 70 | 2.0 | 2.3 | 69.6 | 72.66 |
BK7-10-100 | 10 | 100 | 2.0 | 2.2 | 99.6 | 103.80 |
BK7-12.7-13 | 12.7 | 13 | 2.0 | 5.5 | 11.0 | 12.46 |
BK7-12.7-25 | 12.7 | 25 | 2.0 | 3.6 | 24.4 | 25.95 |
BK7-12.7-30 | 12.7 | 30 | 2.0 | 3.3 | 29.5 | 31.14 |
BK7-12.7-50 | 12.7 | 50 | 2.0 | 2.8 | 49.5 | 51.90 |
BK7-15-15 | 15 | 15 | 2.0 | 5.9 | 14.0 | 15.57 |
BK7-15-25 | 15 | 25 | 2.0 | 4.2 | 24.3 | 25.95 |
BK7-15-30 | 15 | 30 | 2.0 | 3.8 | 29.4 | 31.14 |
BK7-15-50 | 15 | 50 | 2.0 | 3.1 | 49.5 | 51.90 |
BK7-15-60 | 15 | 60 | 2.0 | 2.9 | 59.5 | 62.28 |
BK7-15-80 | 15 | 80 | 2.0 | 2.7 | 79.6 | 83.04 |
BK7-15-100 | 15 | 100 | 2.0 | 2.5 | 99.6 | 103.80 |
BK7-20-20 | 20 | 20 | 2.0 | 7.1 | 18.8 | 20.76 |
BK7-20-26 | 20 | 26 | 2.0 | 6.0 | 24.0 | 25.95 |
BK7-20-50 | 20 | 50 | 2.0 | 3.9 | 49.3 | 51.90 |
BK7-20-100 | 20 | 100 | 2.0 | 3.0 | 99.5 | 103.80 |
BK7-20-150 | 20 | 150 | 2.0 | 2.6 | 149.6 | 155.70 |
BK7-25-26 | 25 | 26 | 2.0 | 8.4 | 23.5 | 25.95 |
BK7-25-50 | 25 | 50 | 2.0 | 5.1 | 49.2 | 51.90 |
BK7-25-60 | 25 | 60 | 2.0 | 4.5 | 59.2 | 62.28 |
BK7-25-80 | 25 | 80 | 2.0 | 3.9 | 79.4 | 83.04 |
BK7-25-100 | 25 | 100 | 2.0 | 3.5 | 99.4 | 103.80 |
BK7-25-200 | 25 | 200 | 2.0 | 2.8 | 199.5 | 207.60 |
BK7-25.4-26 | 25.4 | 26 | 1.8 | 8.4 | 23.6 | 25.95 |
BK7-25.4-36 | 25.4 | 36 | 1.8 | 6.4 | 33.9 | 36.33 |
BK7-25.4-50 | 25.4 | 50 | 1.9 | 5.1 | 49.2 | 51.90 |
BK7-25.4-60 | 25.4 | 60 | 1.9 | 4.5 | 59.2 | 62.28 |
BK7-25.4-80 | 25.4 | 80 | 1.9 | 3.9 | 79.3 | 83.04 |
BK7-25.4-100 | 25.4 | 100 | 1.9 | 3.5 | 99.4 | 103.80 |
BK7-25.4-200 | 25.4 | 200 | 2.0 | 2.8 | 199.6 | 207.60 |
BK7-30-30 | 30 | 30 | 2.0 | 9.7 | 28.3 | 31.14 |
BK7-30-50 | 30 | 50 | 2.0 | 6.4 | 51.9 | 51.90 |
BK7-30-80 | 30 | 80 | 2.0 | 4.7 | 79.2 | 83.04 |
BK7-30-120 | 30 | 120 | 2.0 | 4.0 | 119.5 | 124.56 |
BK7-30-150 | 30 | 150 | 2.0 | 3.4 | 149.4 | 155.70 |
BK7-30-180 | 30 | 180 | 2.0 | 3.0 | 179.5 | 186.50 |
BK7-30-200 | 30 | 200 | 2.0 | 3.1 | 199.5 | 207.60 |
BK7-40-50 | 40 | 50 | 2.0 | 10.0 | 48.3 | 51.90 |
BK7-40-100 | 40 | 100 | 2.0 | 5.9 | 99.0 | 103.80 |
BK7-50-50 | 50 | 50 | 3.0 | 16.0 | 47.3 | 51.90 |
BK7-50-100 | 50 | 100 | 3.0 | 9.1 | 98.5 | 103.80 |
BK7-50-150 | 50 | 150 | 3.0 | 7.0 | 148.8 | 155.70 |
BK7-50-200 | 50 | 200 | 3.0 | 6.0 | 199.0 | 207.60 |
BK7-50-250 | 50 | 250 | 3.0 | 5.1 | 248.9 | 259.20 |
BK7-50-300 | 50 | 300 | 3.0 | 5.1 | 299.3 | 311.20 |
BK7-50.8-100 | 50.8 | 100 | 3.0 | 10.3 | 96.4 | 103.80 |
BK7-50.8-150 | 50.8 | 150 | 3.0 | 7.8 | 147.3 | 155.70 |
BK7-50.8-200 | 50.8 | 200 | 3.0 | 6.5 | 197.7 | 207.60 |
BK7-50.8-250 | 50.8 | 250 | 3.0 | 5.8 | 248.0 | 259.50 |
BK7-50.8-300 | 50.8 | 300 | 3.0 | 5.4 | 298.1 | 311.40 |
BK7-100-200 | 100 | 200 | 3.0 | 15.2 | 197.5 | 207.60 |
BK7-100-300 | 100 | 300 | 3.0 | 11.1 | 298.2 | 311.40 |