At INO we developed a new type of drop-in technique used to center passively and accurately lenses in optical mounts. This innovative lens mounting method allows to extend the centering accuracy offered by passive lens centering methods to a next level without compromise on cost and complexity. Lean more about edge contact mounting in this paper.
Frédéric Lamontagne, Maxime Savard, Nichola Desnoyers, and Mathieu Tremblay "Lens centering using edge contact mounting", Proc. SPIE 11103, Optical Modeling and System Alignment, 1110304 (30 August 2019); https://doi.org/10.1117/12.2528728