Thousands of images, texts, and audio/video from ECU's diverse collections and beyond.

Leitz 4mm Apochromat

Date: 1892 | Identifier: LL02.48.06.32
This lens came with the Leitz Ia microscope, G27. It is almost an exact copy of the Zeiss lens, A20, invented by Ernst Abbe’ for Zeiss in 1888. Abbe’ never patented his inventions, so many were quickly copied by competitors. more...
Click on image to zoom