NTT Makes '1,000x Faster' Variable Focus Lens

A comparison of the sizes of a single KTN crystal and the KTN-based variable focus lens element. According to NTT, it can stably manufacture crystals several times larger than the single crystal on the right.

A comparison of the sizes of a single KTN crystal and the KTN-based variable focus lens element. According to NTT, it can stably manufacture crystals several times larger than the single crystal on the right.

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