Art by Volke

Description of UNDIS hinge
The hinge is an “open” hinge where the surfaces of the two hinges are two asymmetric sets of teeth (wave) which are fixed with an O-ring.
The asymmetric surfaces are designed so that every angle is uniquely adapted, thus creating a continuous uneven surface but overall it provides a smooth and seamless motion.
The two parts, which each hinge consists of, is referred to as the rod and the front.

When the hinge is in the folded position it will result in a light lock-in teeth. The design of the teeth leaves the shortest distance between the surfaces where the O-ring is placed on each of the hinge parts and thereby creating pressure.
When the hinge is in the unfolded position it will cause hard lock applying a pressure on the end of the rod of approximately 30 grams per side. Furthermore the hinge creates a stop position that leaves a constant pressure of the holder’s head of a total 60 grams.

Fortifications on the rod consists of two holes for screws ( in Danish ”companion holes”) which are elongated holes for an adjustment rod for adjusting by ” lopsided” ear position.

UNDIS hinge differs from all other spectacle-hinges in both shape and functionality. For example, if anyone sits on the eyeglasses, the hinge itself will collapse. This will not break the hinge but the O-ring will dislocate. Afterwards the O-ring can easily be moved back to its regular position. A hard impact on the eyeglasses, from any given angle, will push the O-ring in the opposite direction. The elastic element of the O-ring will ensure that after an impact, the hinge will go back to its fixed position. If the impact is too hard, the hinge’s position will collapse. The O-ring can then manually be returned to its original position.
The special designed O-ring is Ozone and UV protected.

The hinge has been developed by HornEyes.