雙凹透鏡是由兩個(gè)相同或不同的凹球面加工而成。它們形成負(fù)焦距。雙凹透鏡在系統(tǒng)中經(jīng)常用于光線擴(kuò)束或增加焦距長(zhǎng)度,并且也可用于激光擴(kuò)束、光讀數(shù)器、觀察器和投影系統(tǒng)。雙凹透鏡的焦距是負(fù)的,是發(fā)散會(huì)聚光束的最佳選擇。類似于平凹透鏡,雙凹透鏡可將一束平行光束發(fā)散到虛焦點(diǎn),由于H-ZF13的阿貝數(shù)(25.76)小于H-K9L的阿貝數(shù)(64.17),因此由H-ZF13制成的透鏡比H-K9L透鏡展示出更大的色散。鐳星光電生產(chǎn)的這些透鏡基片,可根據(jù)客戶需要定制各種膜系,如您有鍍膜需要,請(qǐng)聯(lián)系鐳星光電專業(yè)銷售團(tuán)隊(duì)。
材料 | H-K9L、紫外熔石英、H-ZF13、CaF2,藍(lán)寶石.etc. |
尺寸公差 | ±0.2(標(biāo)準(zhǔn)精度). ±0.05(高精度) |
厚度公差 | ±0.2mm |
設(shè)計(jì)波長(zhǎng) | 546.1nm |
表面質(zhì)量 | 60/40(標(biāo)準(zhǔn)精度), 10/5(高精度) |
面型 | λ/4@633nm(標(biāo)準(zhǔn)精度), λ/10@633nm(高精度) |
偏心 | <3分 |
焦距公差 | ±2% |
通光孔徑 | >90% |
倒角 | 保護(hù)性<0.5mmx45° |
鍍膜 | 無, AR,PR, HR, etc. |
型號(hào) | 材料 | 直徑(mm) | 焦距(mm) | R1=R2(mm) | 中心厚度(mm) | 邊緣厚度(mm) | 后焦距(mm) |
DCVD12.7F-50 | N-BK7 | 12.7 | -50 | -52.1 | 3.5 | 4.3 | -51 |
DCVD25.4F-35 | N-BK7 | 25.4 | -35 | -36.62 | 2 | 6.5 | -35.7 |
DCVD25.4F-50 | N-BK7 | 25.4 | -50 | -52.17 | 2 | 5.1 | -50.7 |
DCVD25.4F-75 | N-BK7 | 25.4 | -75 | -78.09 | 2 | 4.1 | -75.7 |
DCVD25.4F-100 | N-BK7 | 25.4 | -100 | -104 | 2 | 3.6 | -100.7 |
DCVD25.4F-125 | N-BK7 | 25.4 | -125 | -129.92 | 2 | 3.2 | -125.7 |
DCVD25.4F-150 | N-BK7 | 25.4 | -150 | -155.83 | 2 | 3 | -150.7 |
DCVD25.4F-200 | N-BK7 | 25.4 | -200 | -207.66 | 2 | 2.8 | -200.7 |
DCVD25.4F-250 | N-BK7 | 25.4 | -250 | -259.49 | 2 | 2.6 | -250.7 |
DCVD25.4F-300 | N-BK7 | 25.4 | -300 | -311.32 | 2 | 2.5 | -300.7 |
DCVD25.4F-500 | N-BK7 | 25.4 | -500 | -518.64 | 2 | 2.3 | -500.7 |
DCVD25.4F-1000 | N-BK7 | 25.4 | -1000 | -1036.94 | 2 | 2.2 | -1000.07 |
DCVD25.4F-35-FS | UVFS | 25.4 | -35 | -32.52 | 2 | 7.2 | -35.7 |
DCVD25.4F-50-FS | UVFS | 25.4 | -50 | -46.32 | 2 | 5.6 | -50.7 |
DCVD25.4F-75-FS | UVFS | 25.4 | -75 | -69.33 | 2 | 4.3 | -75.7 |
DCVD25.4F-100-FS | UVFS | 25.4 | -100 | -92.33 | 2 | 3.8 | -100.7 |
DCVD25.4F-125-FS | UVFS | 25.4 | -125 | -115.4 | 2 | 3.4 | -125.7 |
DCVD25.4F-150-FS | UVFS | 25.4 | -150 | -138.34 | 2 | 3.2 | -150.7 |
DCVD25.4F-200-FS | UVFS | 25.4 | -200 | -184.35 | 2 | 2.9 | -200.7 |
DCVD25.4F-250-FS | UVFS | 25.4 | -250 | -230.36 | 2 | 2.7 | -250.7 |
DCVD25.4F-300-FS | UVFS | 25.4 | -300 | -276.36 | 2 | 2.6 | -300.7 |
DCVD25.4F-500-FS | UVFS | 25.4 | -500 | -460.4 | 2 | 2.4 | -500.7 |
DCVD25.4F-1000-FS | UVFS | 25.4 | -1000 | -920.48 | 2 | 2.2 | -1000.7 |