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Microfabrication of Implantable Optics Integrated in a Microstructured Imaging Window for Advanced In Vivo Imaging
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Distributed-index planar microlens.

M Oikawa1, K Iga

  • 1Tokyo Institute of Technology, Research Laboratorie of Precision Machinery & Electronics, 4259 Nagatsuta, Midoriku, Yokohama 227, Japan.

Applied Optics
|April 15, 2010
PubMed
Summary
This summary is machine-generated.

Researchers created a distributed-index planar microlens array using selective dopant diffusion. This novel planar technology enables monolithic fabrication of microlens arrays for advanced optical applications.

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Area of Science:

  • Optics and Photonics
  • Materials Science

Background:

  • Microlens arrays are crucial optical components.
  • Traditional fabrication methods can be complex and costly.

Purpose of the Study:

  • To develop a monolithic fabrication method for distributed-index planar microlens arrays.
  • To demonstrate the feasibility of planar technology for microlens fabrication.

Main Methods:

  • Utilized selective dopant diffusion into planar substrates.
  • Employed monomer exchange for plastic substrates.
  • Applied ion exchange and electromigration for glass substrates.
  • Fabricated a 2-D planar microlens array in a glass substrate.

Main Results:

  • Successfully realized distributed-index planar microlenses.
  • Fabricated a 2-D microlens array with individual microlenses of 1.2 mm diameter and 9.4 mm focal length.
  • Achieved a focused spot size of 17 micrometers for a collimated He-Ne laser beam.

Conclusions:

  • Planar technology offers a viable route for monolithic microlens array fabrication.
  • The demonstrated techniques are effective for creating high-performance planar microlenses.
  • This approach has potential for miniaturized optical systems.