SUMMARY
Nikon has patented a dual-group focusing system intended to enable the creation of more compact, bright aperture lenses. The patent describes two optical element groups moving independently along different paths during focusing. This design is similar to the optical systems found in Nikon's Z 35mm f/1.2 S and Z 50mm f/1.4 lenses, suggesting the technology may already be in production. This newer optical design offers advantages over single-group systems, such as better correction of aberrations and improved focus accuracy from near to infinity.
TAKEAWAYS
Nikon patent reveals a dual-group focusing system for compact lenses.
This technology may already be present in Z 35mm f/1.2 S and Z 50mm f/1.4 lenses.
The dual-group system improves aberration correction and focus accuracy.
Patented designs often indicate technology already in development or use.