CURVED Full-Frame Image Sensor development

[JA]

For info some new developments in curved Full Frame image sensors......

https://www.dpreview.com/news/186978...e-image-sensor

Best
JA

[astronobob (Bob)]

Interesting but just how practical, 1st thoughts is wow, the image in the article sure shows a fair amount of curvature within that sensor, not sure how well itd suit telescopes, think it would be more usefull for wide wide field stuff, like 10-20mm lenses, but I'm guessing they would have to make different curvatures for different F/Lengths & F/Ratios, just like particular correctors for particular telescopic instruments ???
UNLESS, , if they make them 'flexible' wohhoo that would be something pretty keool , , adjust to suite scope, & even re-adjust it for another scope, & even more for your Wide Field Lens
Up here for thinking & down there for Dancin' Lol Lol

[Wavytone]

Ok for camera lenses and small refractors but no good for reflectors - should have been convex, not concave !

[RickS (Rick)]

Originally Posted by Wavytone

Ok for camera lenses and small refractors

Or a Ritchey–Chrétien...

[Slawomir (Suavi)]

Originally Posted by Wavytone

Ok for camera lenses and small refractors but no good for reflectors - should have been convex, not concave !

I am pretty sure once past development stage, both concave and convex sensors will be made, or whatever curvature will be required.

[skysurfer]

Would be ideal for widefields and nightscapes.
But for telescopic (or 200+mm telephoto) prime focus photos it won't make sense.

[gregbradley]

Sony made or was developing a full frame curved sensor a few years back. It must be fairly advanced by now.

But for a digital camera it would introduce a lot of complexities. These manufacturers take years to create a full range of lenses and this sensor would require a new type of lens.

Whether their market would opt for the curved sensor needing new lenses versus be able to use what they already have is the question.

It would make most sense in a fixed lens camera like a Sony RX1 type camera. There the lens can be optimised for the curved sensor and its advantages or not can be seen easily.

I don't think that curved TVs and computer monitors took over the marketplace.

Greg.

[bojan]

The problem will be with SLR-s... curvature has to match the specific lens, otherwise nothing else will fit.
Or, there should be some sort of standard - and there already is - flat sensor.

[Slawomir (Suavi)]

Imagine a sensor with its curvature being software-adjustable. So one could run not only an automated focus routine like we do these days, but also a sensor-curving routine ensuring pinpoint stars in all corners without a flattener in the optical path (less glass). Now, that would be cool.

[bojan]

If sensors were flexible... then yes - just like adaptive mirror.

Originally Posted by Slawomir

Imagine a sensor with its curvature being software-adjustable. So one could run not only an automated focus routine like we do these days, but also a sensor-curving routine ensuring pinpoint stars in all corners without a flattener in the optical path (less glass). Now, that would be cool.

[xelasnave]

I think Meade had a 12 inch astrograph that took a curved film plate maybe 12 years ago.
Alex

[JA]

Originally Posted by xelasnave

I think Meade had a 12 inch astrograph that took a curved film plate maybe 12 years ago.
Alex

Hi Alex,

I'd been aware of Celestron making a 5* inch f2 or so Schmidt Camera, but on your suggestion looked into the Meade Schmidt Camera and it's a cracker.... 12 inch f/2.2


http://www.company7.com/library/mead...rapp.50_53.pdf

Best
JA


* - edit, they also made larger

[xelasnave]

That is it...film would never be replaced by those new digitals.
Alex

[xelasnave]

Is that their 7 inch refractor on top.
Looks like digital guide. Very high tech as back then it was
Manual guiding with an illuminated reticle...flash to have motors even.
You guided for the duration of the exposure.
Alex

[JA]

Originally Posted by xelasnave

Is that their 7 inch refractor on top.
Looks like digital guide. Very high tech as back then it was
Manual guiding with an illuminated reticle...flash to have motors even.
You guided for the duration of the exposure.
Alex

Yep, you're on the ball. It was a 7inch f/9, see the PDF I linked to for details. The film size was 120 - 2 inches x 2.5 inches film holder !!

Best
JA

[xelasnave]

I open the link and forgot to look at it.
Alex