彎月透鏡與其它透鏡組合可加長或縮短原有透鏡的焦距,在系統(tǒng)中不增加球差或慧差。彎月透鏡分為正彎月透鏡和負彎月透鏡:
正彎月(凸)透鏡設計用于最小化球差。與另一透鏡結合使用時,正彎月透鏡可以減小焦距,從而在不引入明顯球面像差的情況下,增加系統(tǒng)數(shù)值孔徑(NA)。當用于會聚平行光時,透鏡的凸面應朝向光源,以使球差最小化。
材料 | H-K9L、紫外熔石英、H-ZF13、CaF2、藍寶石 .etc. |
尺寸公差 | ±0.2(標準精度). ±0.05(高精度) |
厚度公差 | ±0.2mm |
設計波長 | 546.1nm |
表面質量 | 60/40 |
面型 | λ/4@633nm(標準精度), λ/10@633nm(高精度) |
偏心度 | <3分 |
焦距公差 | ±2% |
通光孔徑 | >90% |
倒角 | 保護性<0.5mmx45° |
鍍膜 | 無,AR,PR, HR, etc. |
型號 | 材料 | 直徑(mm) | 焦距(mm) | R1(mm) | R2(mm) | 中心厚(mm) | 邊厚(mm) | 后焦距(mm) |
MEND25.4F50 | H-K9L | 25.4 | 50 | 20.58 | 90 | 6 | 2.5 | 45 |
MEND25.4F100 | H-K9L | 25.4 | 100 | 32.1 | 82.2 | 3.6 | 2 | 95.9 |
MEND25.4F125 | H-K9L | 25.4 | 125 | 40.6 | 106.9 | 3.3 | 2 | 121.2 |
MEND25.4F150 | H-K9L | 25.4 | 150 | 49.1 | 131.6 | 3.1 | 2 | 146.3 |
MEND25.4F200 | H-K9L | 25.4 | 200 | 66.2 | 182.2 | 2.8 | 2 | 196.5 |
MEND25.4F300 | H-K9L | 25.4 | 300 | 100.9 | 288.2 | 2.5 | 2 | 296.5 |
MEND25.4F500 | H-K9L | 25.4 | 500 | 123.9 | 235 | 3.5 | 3.2 | 495.4 |
MEND50.8F100 | H-K9L | 50.8 | 100 | 30.3 | 65.8 | 9.7 | 1.1 | 88.8 |
MEND50.8F150 | H-K9L | 50.8 | 150 | 47.9 | 119.3 | 7.3 | 2.7 | 141.7 |
MEND50.8F200 | H-K9L | 50.8 | 200 | 65.2 | 171.6 | 6.2 | 2.9 | 192.9 |
MEND50.8F250 | H-K9L | 50.8 | 250 | 82.5 | 224.7 | 5.5 | 2.9 | 243.5 |
MEND50.8F300 | H-K9L | 50.8 | 300 | 100.1 | 279.1 | 5.1 | 3 | 293.8 |
MEND25.4F-50 | H-K9L | 25.4 | -50 | 90 | 19.9 | 3 | 6.7 | -49.5 |
MEND25.4F-100 | H-K9L | 25.4 | -100 | 90 | 32.59 | 3 | 4.5 | -99.2 |
MEND25.4F-150 | H-K9L | 25.4 | -150 | 100 | 43.1 | 3 | 4.1 | -148 |
MEND25.4F-200 | H-K9L | 25.4 | -200 | 100 | 50.2 | 3 | 3.8 | -197.3 |
MEND25.4F-300 | H-K9L | 25.4 | -300 | 250 | 95.1 | 3 | 3.5 | -297.8 |
MEND25.4F-400 | H-K9L | 25.4 | -400 | 250 | 112.5 | 3 | 3.4 | -397 |
MEND25.4F-500 | H-K9L | 25.4 | -500 | 250 | 126.3 | 3 | 3.3 | -496.3 |
MEND25.4F-1000 | H-K9L | 25.4 | -1000 | 500 | 253.2 | 3 | 3.2 | -994.6 |