Multifocal lens for 3D microscope

Engineers at Ohio University (USA) have invented a special type of microscopic lens that looks at microscopic objects at all 9 different angles at the same time and creates a 3D image of those objects.

A prototype of a new multifaceted lens for 3D microscopes. Photo: University of Ohio.

According to ScienceDaily , other types of 3D microscopes must now use multiple lenses or cameras around an object. However, the invention of engineers at Ohio University (USA) is the first single, static lens that can produce 3D microscopic images of objects.

Allen Yi, associate professor of integrated systems engineering at Ohio University described the new lens type as a proof of concept for medical and microelectronic device manufacturers , which are still in use. Extremely complex machinery mechanism to observe very small components.

Prototype lenses are only about the size of a fingernail and glimpse looks like a gem with a ring face, with a flat top surrounded by 8 faces. However, while gemstones are cut to symmetry, this lens is not symmetrical. The dimensions and angles of the faces vary in minute units, which are often not noticeable to the naked eye.

" Whatever direction you look at, you will see a different shape," Yi explained. Such a lens is called a "multifaceted lens ".

Yi said, although engineers used an accurate cutting machine to carve out their thermoplastic plastic lens prototypes, similar lenses could be made less costly through the techniques. Traditional casting. The expert added: " Finally, we hope to help manufacturers reduce the number and size of equipment needed to shrink the product ."