3 October 2022Bifocal autocollimation head for simultaneous tilt and shift determination in multi-element lenses for ultra-precision 5D adhesive bonding
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The 5D-alignment of multi-element assemblies within a single barrel by adhesive bonding represents a powerful alternative to the sub-cell mounting concept. A bifocal autocollimation head offers efficient and simultaneous monitoring of the single element’s tilt and shift within the cell and minimizes the impact of error propagation. The described process allows for production of mounted lenses with an outstanding alignment precision below 1 μm in all dimensions in less than 3 minutes per lens element. The automated process greatly simplifies the transfer of existing, conventional optomechanical designs to higher performance independent of the number of lens elements in the assembly.
Christian Wilde andPatrik Langehanenberg
"Bifocal autocollimation head for simultaneous tilt and shift determination in multi-element lenses for ultra-precision 5D adhesive bonding", Proc. SPIE 12222, Optical System Alignment, Tolerancing, and Verification XIV, 1222208 (3 October 2022); https://doi.org/10.1117/12.2633040
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Christian Wilde, Patrik Langehanenberg, "Bifocal autocollimation head for simultaneous tilt and shift determination in multi-element lenses for ultra-precision 5D adhesive bonding," Proc. SPIE 12222, Optical System Alignment, Tolerancing, and Verification XIV, 1222208 (3 October 2022); https://doi.org/10.1117/12.2633040