Posts Tagged ‘microlenses’
Etendue of a Fly’s Eye Illuminator
In the first blog article I introduced the subject of étendue and its importance in illumination systems. The example used was simple optical relay, but many systems utilize fly’s eye arrays to provide homogenous illumination. What is the impact of splitting a beam into smaller beamlets on the étendue? Consider this system….. On the left…
Read MoreFabless Manufacturing Applied to Optics
Fabless manufacturing is common nowadays in the semiconductor industry with the likes of Qualcomm, NVIDIA and Apple being well known proponents. These are companies who concentrate on design and marketing of their products but don’t take any part in the fabrication of the product. Fabless manufacturing started in the 80s in Silicon Valley (a relative…
Read MoreWhether it’s hot or cold, stay focused! What’s involved in lens athermalization.
A huge range of commercial-off-the-shelf lenses are readily available from many catalog optics suppliers. However, sometimes what you want is not available and you just need a custom design. One of the features often required in custom lenses is that they operate over a wide temperature range without manual or motorized adjustment. You find such…
Read MoreCamera Sensor: WTF is the MTF?
One of Selene Development’s key product areas is custom lenses for specialist camera systems for applications ranging from autonomous vehicles to space to life science microscopy. The resolution of our lenses is usually defined by MTF and we design and build lenses to an MTF specification. But the lens is only part of the system…
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