Lens Design: Considerations for Lens Maker

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Discussion Overview

The discussion revolves around the various considerations a lens maker must account for when designing a lens. It includes both traditional lens design factors and emerging technologies such as metamaterials.

Discussion Character

  • Technical explanation
  • Exploratory
  • Debate/contested

Main Points Raised

  • Some participants mention traditional factors such as chromatic aberrations, glass type, focal length, lens thickness, magnification, resolving power, radius of curvature, shape, type, and multi-layered lenses.
  • One participant adds considerations of coatings, scattering of light by lens surfaces, and light bouncing within the lens.
  • Another participant introduces the concept of metamaterials, suggesting they could revolutionize lens design despite not resembling traditional lenses.
  • There are mentions of the focal plane being flat or not, the intended focus distance, and the specific wavelengths to be transmitted through the lens.

Areas of Agreement / Disagreement

Participants generally agree on the importance of various traditional factors in lens design, but there are multiple competing views regarding the relevance of newer technologies like metamaterials and additional considerations such as coatings and light behavior.

Contextual Notes

Some assumptions about the necessity of certain factors in lens design remain unresolved, and the discussion does not reach a consensus on which considerations are essential or if any are extraneous.

Gogsey
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What considerations would a lens maker need to take into account when designing a lens?

So on top of the chromatic aberrations, glass type and focal length, I have:

Lens Thickness
Magnification
Resolving Power
Radius of Curvature
Shape(ie cylindrical, spherical, plane)
Type(ie convex, concave, dichromatic, achromatic)
Multi-layered lens
Other types of aberrations.

Is there any of these that are not required, or any that I've missed?

Thanks
 
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Gogsey said:
What considerations would a lens maker need to take into account when designing a lens?

So on top of the chromatic aberrations, glass type and focal length, I have:

Lens Thickness
Magnification
Resolving Power
Radius of Curvature
Shape(ie cylindrical, spherical, plane)
Type(ie convex, concave, dichromatic, achromatic)
Multi-layered lens
Other types of aberrations.

Is there any of these that are not required, or any that I've missed?

Thanks

Coatings
 
And...
1) scattering of light by the lens surfaces
2) bouncing around within the lens
3) light coming in at oblique angles and hitting the tube holding the lens(es).

#1 & #2 are influenced by the coatings.

Also if the focal plan is flat or not flat,
Where the lens is designed to be focused (infinity or closer)
The wavelengths that are to be passed through.

Probably more.
 
Just to add a twist on lenses; metamaterials can be used.

It doesn’t look like a lens; it looks more like a tiny set of Venetian blinds. It’s not even made of traditional lens materials such as highly polished glass or plastic. But a new generation of lenses has the potential to make big changes in radar and telecom systems by offering greater detail and a wide field of view, according to engineers from Duke University.

http://www.photonics.com/Article.aspx?AID=41009"
 
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