Microlens array
A microlens array is a lens array that has lenses less than a few millimeters wide. It is an important component of light field cameras and some types of light field displays. It is substantially the same concept as a fly's eye array (FEA).
It can be used to make a microlens-based light-field display.
The lenses are best measured in units of micrometers, also known as microns.
Lens arrays can be produced using microfabrication techniques, in particular photolithographic techniques.[1]
Lens arrays have been manufactured at the wafer level by Lytro.[2]
Lens arrays have been produced with a distance between lenses of about 125 microns, which is 1/8 of a millimeter.[3]
Production[edit]
Microlens arrays can be produced using the photoresist reflow technique.[4]
Diamond point turning can be used to form microlenses.[4]
Ion beam etching can be used to correct a lens profile to form aspheric lenses.[4]
It is possible to make a microlens array using a tiny metal ball bearing hammered into a copper plate, then molding polycarbonate using the copper plate.[5]
References[edit]
- ↑ https://patentimages.storage.googleapis.com/ae/55/08/039fdcbd181cb7/US20130033636A1.pdf
- ↑ "Karafin Lytro". https://www.youtube.com/watch?v=6nYXVT0QUkc.
- ↑ "Plenoptic Cameras: The Future of Imaging". https://www.youtube.com/watch?v=nyRgcD4VxE8.
- ↑ 4.0 4.1 4.2 Daly, Dan (2000-11-23). Microlens Arrays. London ; New York: CRC Press. ISBN 978-0-7484-0893-1.
- ↑ "Lightfield Camera". https://cameramaker.se/Lightfield.htm.