Xiaomi Yi Lens Filter

thingiverse

This is a lens filter assembly that I made for the Xiaomi Yi camera. It prints in three separate printer-friendly pieces that must be glues together. A filter of your choice (ND, polarizer) is inserted between the main housing and top ring. The size of this filter allows the use of the Yi's complete 120 degree field of view without having any vignetting on the image. It is just about as wide as the Yi is tall so the camera will still sit upright on a flat surface. I decided to make my own filter after not finding a suitable one online. The filters I found for sale were said to add vignetting to the video, and the ones that were large enough to avoid this issue would take weeks to arrive. So I made my own design and used the polarized lens from an old pair of 3D movie glasses. Print Settings Printer: FolgerTech 2020 Rafts: No Supports: No Resolution: 0.1-0.2mm Infill: Any Amount Notes: Very simple print. All three pieces can be done at once. Post-Printing Finishing If you did not use a glass bed to print on, you may want to sand down the bottoms of each part so that things will be as flush as possible when gluing together the final filter. Using the main filter body, cut out a piece of filter material of equal diameter. When gluing the top ring on to the main filter body sandwich the filter in between the two pieces. Make sure not to use too much glue or else there will be overflow on to the filter. I used a very thin layer of hot glue. Since the filter does not receive a lot of stress hot glue should hold just fine.