| > Why would they go in a circle when all they need to do is provide a single wavelength on a single axis? Going in a circle (really a trochoid) is actually a pretty smart way to scan a 2D surface with a single light ray, you basically just rotate the vibrating fiber's plane of vibration around an axis to produce a cone of light. If you wanted to have only a single axis movement, you'd need many more fibers, one for each row of pixels. >> In the case of near eye optics, there is no way to get the multiple projector image collimated AND seamlessly put together. > Unless they did something completely crazy and invented a method to do this. Did you read kguttag's argument on the matter? The reason this doesn't work is because the optics for collimation depend on the incoming angle of the light, so it must happen close enough to the light sources that the different light cones do not overlap. Then the light still expands within the optics before it gets straightened out, so there needs to be some gap for tolerance. So either they end up with some stray light rays that go into undesirable directions, or there is a gap at the border between the different regions. Now maybe they showed a demo of this with visible artifacts to people and they were still blown away. Most likely they also told them that there was still room for improvement, while leaving open where exactly the fundamental limits are. Maybe they will release the imperfect version of their product than can actually be built, and people will still love it despite not living up to the marketing. The problem is not that Magic Leap's ideas are completely useless or impossible to implement, just that they are significantly overhyping the expected capabilities of the finished product. |