Collapsible lens patent
The japanese blog Egami (Click here) found a new Sony patent disclosing a collapsible lens technology. The image on top shows the lens in full retracted position. The single lenses are in contact with the other lenses to minimize the length. Actually only Olympus is offering such a lens (The 14-42mm kit lens). Collapsible lenses and in future also the liquid lens technology should allow Sony to create very small lenses. Can’t wait to see one of these lenses for real!
nagi
2 years ago |Liquid, electrostatic lens tech is still quite far from actual utilization. A decade at least.
frosti7
2 years ago |Liquid lens are highly successful in my iphone 4, and other smart phones
what makes you so sure?
Froo
2 years ago |What are you smoking? Your iphone doesn’t have a liquid lens.
Liquid lens technology is only suitable for very small elements and not for SLR-sized coverage.
frosti7
2 years ago |what am i smoking? apperantly something good
you are right, iphone does not have liquid lens, and according to the following article we wont see such lens in a phone till 2013,
but it also states that liquid lens are used for industrial use for years now
http://asia.cnet.com/crave/cameraphones-can-expect-liquid-lenses-soon-62209175.htm
Sahaja
2 years ago |As long as the collapsible nature of the lens does not affect its rigidity and auto focus accuracy.
BTW, in this design, which is the optical stabilization element?
frosti7
2 years ago |Its impossible to produce inaccurate focus lens with any mirrorless camera -as those use CDAF
Mistral75
2 years ago |It is possible to suffer from inadequate focus and/or sharpness if any single lenses are slightly tilted or decentered.
passer-by
2 years ago |Sony actually listened to us? Muhahaha…
Steve Jones
2 years ago |I sincerely hope the individual lens elements don’t actually come in contact with one another when fully collapsed. That sounds like a recipe for damaging the surfaces and any coatings. More likely is that there would be a tiny gap. Quite what the patent covers, I don’t know. Collapsible lenses are hardly new, and they all move elements closer together. I can only imagine that it’s about the detailed design of the elements and the groups. After all, many lens optical designs have been patented in the past – like the Sonnar.
Anyway, I think if people want compact lenses (especially zooms), then collapsible designs are inevitable.
Aalpha100
2 years ago |+1
And without dust and moisture sealing (more difficult bcs the lens will expand and contract) it will be worse.
Still, an interesting thing. Bigger is better seems passe.
butch
2 years ago |if a telescoping lens tec was implemented maybe we could get an adjustable macro ratio
joel
2 years ago |I think the lenses that are “in contact” with each are not the ones that would actually shift when the lens collapses and expands. It is actually nothing new to have lens elements cemented to each other.
Kyle Batson
2 years ago |Looks like a prime lens. I would be pretty disappointed if the first compact lens Sony came out with (other than the 16mm) was a zoom lens. But that’s me.
Mistral75
2 years ago |11 elements in at least 7 groups and it “looks like a prime lens” ! Come on…
Carl
2 years ago |There are certainly primes with more than 11 elements out there, so I wouldn’t read much either way from the number of elements.
The design (when extended) is nominally a Sonnar derivative, but as the applications of such lenses are so broad, it’s hard to make a guess at the focal length(s) this particular example will offer.
A tele prime is a possibility. Certainly, the long dimensions such a lens would normally come in (especially when you are adding 25mm to the barrel to compensate for the NEX’s short back flange) would make it a good candidate for a collapsable construction.