平凹透镜

平凹透镜

平凹透镜为一面平一面凹的透镜,具有负焦距,常用来发散准直的入射光束。

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描述

平凹透镜为一面平一面凹的透镜,具有负焦距,常用来发散准直的入射光束。
平凹透镜具有负焦距,常用来发散准直的入射光束。在这种情况下,准直光束应该入射到曲面上,以最大程度地减小球面像差。平凹透镜能成虚像,因此常用作伽利略扩束系统中的入射光学元件;这种透镜具有理想的发散性,然后使用胶合透镜重新准直光束。在光学系统中,研究人员常小心的选择光学元件,使正透镜和负透镜引入的像差刚好抵消。还有人会用成对的透镜来增加会聚透镜的有效焦距。

平凹透镜规格:

Material:BK7, Fused Silica, SF10, CaF2, Sapphire .etc.
Paraxial Focal Length Tolerance:±2%
Dimension Tolerance:±0.2(General). ±0.05(High Precision)
Centration:<3 arc min
IRR:λ/4@633nm(General),λ/10@633nm(High Precision)
Clear Aperture:>80%(Small Size), >95%(Large Size)
Surface Figure<1.5λ@633nm(General),<λ/4@633nm(High Precision)
Surface Quality:60/40(General),10/5(High Precision)
Bevel:<0.25mm
Coating:Uncoated, AR,PR, HR, etc.

常规尺寸

Item No.Φ(mm)f(mm)R(mm)Tc(mm)Te(mm)Fb(mm)
MaterialN-BK7
LPV-0016-126.2222.77-13.31
LPV-0026-2412.4422.37-25.31
LPV-10112.7-157.7925.27-16.35
LPV-10212.7-2010.3724.17-21.32
LPV-10312.7-2512.9723.7-26.33
LPV-10412.7-3015.5623.4-31.31
LPV-10512.7-4020.7523-41.32
LPV-10612.7-5025.9422.79-51.33
LPV-10712.7-7538.922.52-76.31
LPV-10812.7-10051.8822.39-101.33
LPV-20125.4-3518.1527.18-36.32
LPV-20225.4-5025.9425.32-51.33
LPV-20325.4-7036.3124.29-71.32
LPV-20425.4-7538.924.13-76.31
LPV-20525.4-10051.8823.58-101.33
LPV-20625.4-12564.9623.26-126.36
LPV-20725.4-15077.823.04-151.3
LPV-20825.4-17590.7822.89-176.32
LPV-20925.4-200103.7522.78-201.33
LPV-21025.4-250129.7222.62-251.39
LPV-21125.4-300155.622.52-301.29
LPV-21225.4-500259.422.31-501.39
LPV-21325.4-1000518.722.16-1001.28
LPV-30130-8041.524.81-81.32
LPV-30230-10051.8824.22-101.33
LPV-30330-200103.7523.09-201.33
LPV-30438-5025.94210.28-51.33
LPV-30538-10051.8825.6-101.33
LPV-30638-15077.824.36-151.3
LPV-30738-200103.7523.76-201.33
LPV-30838-350181.5523-351.31
LPV-30938-500259.422.7-501.39
LPV-31038-700363.122.5-701.31
LPV-40140-5025.94211.42-51.33
LPV-50150-7538.9212.1-76.97
LPV-50250-10051.8839.42-101.99
LPV-50350-15077.837.13-151.96
LPV-50450-200103.7536.06-201.99
LPV-50550-250129.7235.43-252.05
LPV-50650-40020734.52-401.03
LPV-50750-500259.434.21-502.05
LPV-50850-600311.234.01-601.91
LPV-50950-80041533.75-802.02
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