One of the latest Sony patents disclosed a new kind of sensor. Pixel size does change based on their color characteristic. This does make sense because every color has a different sensivity. Read the google english translation:
- Patent publication number 2010-129548
- 2010/06/10 Release date 2010/06/10
- 2008/11/25 Filing Date November 25, 2008
- Current Issues
- Patent Technology
- Energy profiles corresponding to the active area (pixel size) and
- Long wavelength light (Red) is a large photodiode (detector sensors) and
- Silicon on the substrate, R is the weakest of the irradiation energy
- RGbGrB square fit to
- Consider the type and surface radiation exposure type back
- Bayer employs
- Pixel pitch of 1.1μm (back radiation) 2.5μm and (irradiated surface) examined
Source: Egami
6 Responses
Gb? Is that a green/blue pixel? If so, I wonder if that’s related to the “C” layer noted in a recent post, that some felt was cyan, but others noted was likely clear… It’ll be interesting to see what innovations are released, and in which products they are installed.
Gr means Green photo diodes that on same horizontal line with R photo diodes.
Check this out:
http://www.patentstorm.us/patents/7009639/claims.html
four-channel signal detecting means for detecting, from the three primary color signals provided from the solid-state image sensor, an R signal acquired from R pixels in a horizontal line of R, G, R, G, . . . , R and G color filters, a Gr signal acquired from the G pixels in the same horizontal line, a Gb signal acquired from G pixels in a horizontal line of G, B, G, B, . . . , G and B color filters, and a B signal acquired from the B pixels in the same horizontal line;
This might be a good layout for daylight use, but not so much for use indoors with incandescent and CFL (regular 2700K models) lighting, which is typically strong in red and green energy and deficient in blue.
Usually, the noise is made worse when correcting the white balance because the weak blue channel needs to be boosted much more than the other two. This would only make it worse.
Sony also is working in a transfer device from the sensor to processor through laser bean instead metal wire to reduce the static signal
Hello
Sorry for sidetracking the topic but is there any news on the two alphas to be released ? I visit this site everyday in hope of any news because my current camera is broke and I want to wait for those 2 before making any decision… it’s killing me !
Sony just sent my Nex-5 18-55 lens black only is avilable hurry get yours 🙂