Tuesday, April 28, 2020

Hypercentric optics: A camera lens that can see behind objects

Telecentric and hypercentric optics are very different from our eyes or normal camera lenses. They have "negative" perspective or no perspective, respectively, leading to very unusual images. In this video I show how to use a common fresnel lens in the creation of your own telecentric optical system. 
Fresnel lens, 300mm dia. 200mm FL is sold out... https://www.amazon.com/gp/product/B071ZQL9YZ/ 

Idea to use macro tubes for telecentric conversion of normal lenses came from here: http://www.4photos.de/camera-diy/Telecentric-Lens.html 

Commercial hypercentric and telecentric lens maker: https://lw4u.com/ 

Paper on making telecentric lenses with fresnel front elements: https://sci-hub.tw/10.1117/12.455256 

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