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首页> 外文会议>Optical system alignment, tolerancing, and verification VIII >Dual-interferometer for measuring molded lens tilt and decenter
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Dual-interferometer for measuring molded lens tilt and decenter

机译：双干涉仪，用于测量成型透镜的倾斜和偏心

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Along with the huge increase in the number of molded aspheric lenses comes the need for measuring the decenter and wedge between the two surfaces of the lens. We describe a pair interferometers facing one another with foci coincident in three degrees of freedom and axes aligned parallel to one another, and the means for performing this alignment. Once the interferometers are aligned, the lens to be measured is inserted between the interferometer foci and the lens is first moved so one surface is in focus and relatively well aligned to the interferometer. An interferogram is taken of this side. Then the lens is moved to focus on the second and an interferogram is made. The difference in the two measured surfaces gives a signature of the decenter and wedge between the two surfaces.
机译：随着模制非球面透镜数量的大量增加，还需要测量透镜两个表面之间的偏心和楔形。我们描述了一对对焦点的干涉仪，它们在三个自由度上重合并且轴彼此平行对准，并且进行这种对准。对准干涉仪后，将要测量的透镜插入干涉仪的焦点之间，然后首先移动透镜，使一个表面对准焦点并相对于干涉仪相对对准。从这一侧获取干涉图。然后，移动镜头以将其聚焦在第二个上，并制作干涉图。两个测量表面的差异给出了两个表面之间的偏心和楔形的特征。

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