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IIRC it's a size and power thing. You can emulate most of what a ring laser gyro does with good accelerometers and that's the better choice for most devices nee
by leeter 5y ago
IIRC it's a size and power thing. You can emulate most of what a ring laser gyro does with good accelerometers and that's the better choice for most devices needing long battery life and compact size. Ring laser gyros (while small) are not that small last I checked. A quick google shows you can get them in about the size of a pocket watch. So potentially a good case addon for those that need it without the cost/power usage issues that would hit those that don't.
- jjoonathan 5y agoBy "integration" I meant "turn the module into a chip" rather than "put the module in a phone" -- though your point about power could be the answer. Some lasers and optics just feel like the kind of thing that a clever team could squeeze onto a wafer, maybe with a loop in the third dimension. Or maybe just require two of them. There's probably a good answer as to why that's harder than it seems, I just don't know what it is.
- leeter 5y agoIt looks like there is work in that direction... but like most things it's 10years (TM) away. https://www.nature.com/articles/s41566-018-0266-5 https://www.nature.com/articles/s41566-018-0266-5 https://arstechnica.com/science/2018/11/tiny-laser-gyroscopes-awesome-though-still-need-work/ https://arstechnica.com/science/2018/11/tiny-laser-gyroscope...
- jjoonathan 5y agoCool, thanks for the links!