Rapid Prototyping a Fly’s Eye Lens Array
A Fly’s Eye Lens Array is a 2-D array of lenses including individual optical lenslets assembled or formed into a single optical element. It is used to spatially transform light from a non-uniform distribution to a uniform irradiance distribution at a defined illumination plane.
A Fly’s Eye Lens Array
As the name suggests, a Fly’s Eye Lens Array is directly inspired by nature itself. Our blogpost on ‘Biomimicry and Organic Design‘ may inform and inspire you further.
The array is formed by a series of small lens combinations, which are either linear or diagonally arranged. Fly’s eye lens arrays are mostly used in pairs to spatially homogenize or make a light source uniform at the illumination plane.
The two arrays are called the ‘objective array’ and the ‘field array’ and are used with a so-called ‘condenser lens’. The objective array images the source at the field array. The field array reimages all of the fields with the condenser lens so they overlap at the illumination plane and create a uniform irradiance.
Fly’s Eye Lens Array Applications
A Fly eye lens array has a broad scope of applications in microdisplay and projection applications. Using a fly’s eye lens array is almost always used with lamp assemblies with a parabolic reflector providing semi-collimated light. Presently, they are mostly used in LCD digital projector light engines in the illumination section to deliver spatially uniform or homogenized illumination to the spatial light modulator illumination plane.
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At Luximprint, we offer additive optics fabrication services that allows our users to get their lens parts rapidly prototyped in a fast, flexible and cost-effective matter.