1. Glasses Out for Use
2. Case Open and Glasses Inserting
3. FlashCase Ready to Travel
An Ultra-Slim Case for ThinOptics Ultra-Slim Glasses
The “stash anywhere…go everywhere” reading glasses!
Small enough to fit in your wallet, purse, pocket.
Initial concepts explored a variety of materials and finishes, mechanisms and stack-up geometry. Ultimately the concepts that utilized thin sheet-metal over an injection molded body that could be UV printed upon, trumped the other material stack-up constructions. Read below to see how the design influenced the Mechanical engineering.
FlashCard engineering was highly dependent on balancing the intended look and feel of a thin, sleek product, with the manufacturing realities based on material limitations. To make sure we produced a design that was manufacturable we worked early on with the plastics vendor to establish minimum wall thicknesses that would allow us to push the design as thin as possible. Efficient back and forth provided a design that had the look and feel we required with full sign on of the manufacturer.
Another challenge in the flash card design is the attachment of sheet metal to plastic, while fairly common practice the flashcard is challenging as there is very limited contact area due to coring. As such we worked closely with adhesive vendors to determine a solution that would be both easy to apply while still providing sufficient strength.
The most difficult part of the design from a technical perspective was achieving the desired opening force while still providing long latch life and hiding the mechanisms. There is limited space so it was necessary to balance having an arm long enough to reduce strain, while still being thick enough to have enough opening force, by changing arm geometry and latch angle we were able to achieve a feel that met all of our goals. Design validation was done using FEA then confirmed and iterated through multiple physical prototypes.