Sony patented a Hybrid Micro lens, the micro-lens of the latest Sony sensor is composed to two sub-pixels, one pixel is dedicated for auto-focusing and the other pixel is light sensitive.
The main objective of Sony is to remove the light blocking pixels from the sensor. If all the micro-lenses of the sensor are photosensitive than the camera will give fast contrast AF and neat High ISO images.
Description, self-interpretation of the patent literature
- Patent Publication No. 2015-153975
- Published 2015.8.24
- Filing date 2014.2.18
- Sony patents
- Microlens is formed over two or more pixels
- The first pixel for focus detection
- The second pixel imaging
- Micro lenses as viewed from the first pixel are inclined
- The optical axis of the microlens is in a second pixel
Canon Dual pixel CMOS AF tech is a excellent technology that eliminates the problem of dead-pixels inside the sensor, to know more click here.
Also see – Sony Multilayer Hybrid AF Sensor Patent
source- egami
