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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 19,
  • Issue 10,
  • pp. 102201-
  • (2021)

Multi-focused droplet lens array inspired by movable-type printing technology

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Abstract

A straightforward, cost-effective scheme for fabricating multi-focus droplet lens arrays is proposed. Mini lenses can be rapidly produced by dripping liquid-state polydimethylsiloxane droplets on the square glass substrate. The focal length of the lenses can be precisely controlled by adjusting the mass of the droplet. A group of prepared mini lenses can be flexibly assembled in a three-dimensional printed mount. The lenses are tightly packed together, ensuring a high filling factor of the lens array. The lens array consisting of the mini lenses with a proper combination of focal length can capture images of interests at different depth.

© 2021 Chinese Laser Press

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