产品产地:
中国航运港口:
中国福州交付周期:
四周付款:
银行电汇, 西联付款
1. 弯月透镜的优势是什么?
弯月透镜和标准的平凸透镜相比,产生更小的焦点和更少的像差,并提高了图像质量.
2. 什么是弯月透镜?
弯月透镜有2个曲面,一边面是凸的,另一边面是凹的,它的中心比边缘更厚.当一个半月板透镜与另一个透镜组合时,焦距缩短,系统的数值孔径增大。
负弯月透镜常用于红外应用。这些透镜凹侧曲率更大,凸侧曲率更小,可以用来替代其他负透镜。
Material: |
Grade A optical glass or Fused Silica |
Dimension Tolerance: |
±0.1mm(Standard), ±0.05mm(High Precision) |
Center Thickness Tolerance: |
±0.1mm(Standard), ±0.05mm(High Precision) |
Focal Length: |
±2% |
Surface quality: |
60/40(Standard), 20/10(High Precision) |
Clear Aperture: |
>85% |
Surface Figure: |
λ/2(Standard), λ/4(High Precision) @633nm |
Centration: |
3 arc minutes |
Bevel: |
<0.25mm×45° |
Coating: |
Upon requirement |
Part No. | Material | F(mm) | Φ(mm) | R1(mm) | R2(mm) | Tc(mm) | Te(mm) | Fb(mm) |
---|---|---|---|---|---|---|---|---|
ULMN100254 | BK7 | 100 | 25.4 | 33.72 | 90 | 4 | 2.5 | 97.5 |
ULMN125254 | BK7 | 125 | 25.4 | 38.47 | 90 | 4 | 2.8 | 121.8 |
ULMN150254 | BK7 | 150 | 25.4 | 42.52 | 90 | 4 | 3 | 146.3 |
ULMN175254 | BK7 | 175 | 25.4 | 46.05 | 90 | 4 | 3.1 | 171.2 |
ULMN200254 | BK7 | 200 | 25.4 | 49.03 | 90 | 3.5 | 2.8 | 197 |
ULMN250254 | BK7 | 250 | 25.4 | 83.96 | 235 | 3.5 | 2.9 | 246.5 |
ULMN300254 | BK7 | 300 | 25.4 | 94.08 | 235 | 3.5 | 3 | 296.3 |
ULMN500254 | BK7 | 500 | 25.4 | 123.9 | 235 | 3.5 | 3.2 | 495.4 |
ULMN100254N | BK7 | -100 | 25.4 | 90 | 32.59 | 3 | 4.5 | -99.2 |
ULMN125254N | BK7 | -125 | 25.4 | 90 | 37.26 | 3 | 4.2 | -123.7 |
ULMN150254N | BK7 | -150 | 25.4 | 90 | 41.42 | 3 | 4 | -149.5 |
ULMN175254N | BK7 | -175 | 25.4 | 90 | 44.86 | 3 | 3.8 | -174.6 |
ULMN200254N | BK7 | -200 | 25.4 | 90 | 47.84 | 3 | 3.7 | -199.6 |
ULMN300254N | BK7 | -300 | 25.4 | 235 | 93.13 | 3 | 3.5 | -298.3 |
ULMN500254N | BK7 | -500 | 25.4 | 235 | 122.6 | 3 | 3.3 | -496.5 |
ULMN600254N | BK7 | -600 | 25.4 | 600 | 204.08 | 3 | 3.2 | -596.8 |
上一个 :
MgF2镀膜双凸透镜下一页 :
宽带增透膜消色差透镜