1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Dear Guest,

    Apologies for the issues that you may be experiencing with the AP forum. While not ideal, it is reported that access can be gained by using Internet Explorer or MS Edge browsers. Hopefully normal access will be restored though perhaps not until Monday.
    Dismiss Notice

New Lens Design

Discussion in 'Lens Matters' started by AndyTake2, Aug 28, 2019.

  1. AndyTake2

    AndyTake2 Well-Known Member

    daft_biker likes this.
  2. Chester AP

    Chester AP Well-Known Member

    There is not much information about size, weight, manufacturing costs, etc.
    Is this just a specialised 'clickbait' website?
    It attempts to download a yahoo cookie, so they must have an interest in your browsing habits.
    RogerMac likes this.
  3. AndyTake2

    AndyTake2 Well-Known Member

    Who nicked my post??
    I replied last night, but it's gone.
    Basically the post is about the scientific discovery (i.e. the maths) which can then be used by any lens manufacturer.
    As for cookies, the site allows you to customise them in the usual agreement - I turn off everything except the essentials, so don't really notice which advertiser/tracker is playing along with them. Using MS Edge.

    There is plenty of advertising on the site, including some of the articles - which to be fair usually state that they are sponsored where appropriate. It is a good site for some of the more interesting engineering news.

    For the direct link to the science, here's the paper:
  4. Learning

    Learning Ethelred the Ill-Named

    The formula does not create a perfect lens. It creates a single element lens free from spherical aberation.
  5. AndyTake2

    AndyTake2 Well-Known Member

    Well I couldn't understand the maths, but I guessed it was for a single element - but if you put enough perfect elements together, doesn't that create a perfect Lens?:)
  6. nimbus

    nimbus Well-Known Member

    Well a less imperfect lens anyway!
  7. Learning

    Learning Ethelred the Ill-Named

    Indeed. Put two of them together using suitable materials you would correct the worst of chromatic aberations. One lens would be converging of low dispersion and the other would be high dispersion and diverging. That's 4 very complex surfaces so far, 6 if you want an apochromat. You still have further aberations to go. Lenses using this method may well appear on the market and might well allready be used in top military surveilance. They will not be cheap.Sadly my knowledge of optics goes no further. Longhurst Optics , a standard undergraduate text, from over fifty years ago is not quite up to date.
    Last edited: Aug 29, 2019
  8. AndyTake2

    AndyTake2 Well-Known Member

    I'd need some glasses to read it:D
  9. pocketshaver

    pocketshaver Member

    Its doubtful if the effect of this "formula" would apply to an actual camera lens, as it only applies to an individual lens, and ONE STYLE of lens shape I believe...

    You would still have issues when you build a lens. The petzval lens as original created should come out nearly flawless, but that would limit a person to what, 100 mm?

Share This Page