You've seen our previous post describing our TinyTam 125mg optical flow sensor prototype. Now we show you step-by-step how it was assembled! We hope that some of you find this interesting, and get a sense of what is involved with working with bare chip die an electronics at this scale.
This post describes the printed optics used on both our CYE8 sensors and the 125mg sensor prototype. This technique allows the construction of optics that are extremely light and support a wide field of view (approaching 180 degrees), and where resolution and sensitivity are not the highest priorities. This technique can be applied to practically any image sensor with exposed silicon- it will not work as well if… Continue
As an exercise in size reduction, we have prototyped a complete optical flow sensor in a 125 milligram and 7mm x 7mm package. This mass includes optics, image sensing, and all processing. Above is a video and a close-up photograph. In the video, note the green vector indicating measured optical flow as a result of image motion.