How does the phase focusing (phase autofocus) work on SMART PHONES (the principle of operation)?

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04.06.2018 8:54:00
Dear experts!
I was looking for an answer to my question in Google. But in the top of the search results, all articles turned out to be written by those who do not understand the principle of the phase autofocus operation. A couple of articles seem to be written by knowledgeable people, but, firstly, there is mentioned a mirror (that is, it's not about smartphones), and secondly, some items are not clear, and you can not ask a question (this is an article, not a forum).

Maybe someone here knows how phase focusing (phase autofocus) works on SMART PHONES (the principle of operation)?
 

04.06.2018 10:54:00
the principle is exactly the same as not on smartphones, only a technical version without a mirror and a separate phase-focusing sensor, everything you need is built into the main matrix

04.06.2018 13:44:00
Then what happens to the partition with two microlenses at the time of shooting? Mechanically rises? And why even before shooting in the process of focusing, I can see an image (albeit fuzzy) on the display? After all, the partition should interfere?

04.06.2018 15:05:00
The principle of operation is exactly the same as in mirrorless mirrors and soap boxes with larger matrices with phase AF. Separate principle is not yet invented for Smart.

05.06.2018 10:28:00
:
Then where does the partition with the two microlenses go at the time of shooting? Mechanically rises? And why even before shooting in the process of focusing, I can see an image (albeit fuzzy) on the display? After all, the partition should interfere?
there are no partitions and nothing is not going anywhere, especially mechanically. There is only a matrix of such a design that allows phase focusing

07.06.2018 10:52:00
:
The principle of operation is exactly the same as in the case of mirrorless and soap boxes with larger matrices with phase AF.
The problem is that in Google all the good explanations of phase autofocus found by me are related to the SLRs (a partition with two lenses).
For the mirrorless, soap and smartphone all the explanations boil down to the fact that " in the matrix are added pixels specifically for the phase autofocus " . Then what is the difference from conventional contrast?

07.06.2018 16:01:00
Thank you for your search. But I have already read both of these articles. Both articles were written by journalists who themselves could not or were too lazy to find out the essence of phase focusing. The truth in the first is a drawing on which there is a partition with two holes between the lens and the photosensitive matrix.
But according to the answer above, this partition is not there.
I have a request to those who understand how phase focusing works on smartphones, or to explain in a couple of sentences right here (and I'll ask the remaining questions), or tell where you got the clear information yourself.
 

09.06.2018 19:51:00
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How does the phase focusing (phase autofocus) work on SMART PHONES (the principle of operation)?

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