Dynamic (internal) Focusing System (DFS™)
The Dynamic Focusing System (DFS) is a patented internal-focusing system specifically developed for InfiniMite™,
InfiniMini™ and other lenses in the Proximity™
Series. As the world leader in internally-focused optical instruments, Infinity Photo-Optical Company has now—for the first time—developed
lenses (as opposed to full-fledged instruments) which are application-specific. Infinity’s other (instrument) products incorporate our patented
afocal-variation system (AVS)
and/or (InFocus)—which allow many different configurations
for successively different uses and applications. Like AVS, DFS is a type of variating system, but is simplified by combining and subsuming
the variating principle into the image-forming optics. This results in a less costly optical design, allowing the InfiniMini and other Proximity lenses to
be priced substantially lower than our comprehensive instruments.
Details on Proximity lenses