Pixel density - can the playing field be leveled???

Started Jun 6, 2009 | Discussions thread
Virvatulet Contributing Member • Posts: 880
Re: A little discretion please!

bushi wrote:

ejmartin wrote:

the issue is not the fill factor but other aspects of the layering of the chip.

So according to that picture by Sony:

So, either this picture is wrong , and you are right about microlenses allowing nearly all light to reach photosensitive area, or the picture is right, and I am right, stating that less MP on the otherwise same sensor (= less wiring that stops some light from reaching the photosensitive area) equals more light being captured. And all my findings and analogies were right, as for the general description what is going on under the hood.

Well, at the moment it seems that I was right.

And I would like to make a supplementary note that during past years Sony Semiconductors has several times referred to development that has helped them to increase the efficiency of microlens structure along with PD/charge well size increase (sometimes even absolute like ICX495 -> ICX624, though mostly relative). If the light gathering premise of 100% would be valid this development would not have been possible.

In fact there are very few things in real life where 100% efficiency would even be achievable under any conditions.


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