Confessions of a researchaholic

January 21, 2018

Symmetric confusion

Filed under: Real — liyiwei @ 6:19 pm
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A few days ago a lens was knocked out of my eye glasses.
After carefully putting the lens back and ensuring that everything is in shape, the glasses still produced weird optical distortion.
Finally, I realized that the lens is symmetric in boundary shape but asymmetric in optical axis, and I have put it upside down.

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