How Effective Is a Fresnel Lens in Transporting Light Through Fiber Optics?

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Discussion Overview

The discussion centers around the effectiveness of a Fresnel lens in transporting light through a fiber optics cable, specifically considering the setup involving a 12x12" Fresnel lens and a 14mm diameter fiber optic cable. Participants explore aspects related to light transmission, heat loss, and material properties.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • Fritz Laun inquires about potential heat loss and the percentage of light that would exit the fiber optics when using a Fresnel lens.
  • One participant questions the completeness of the problem, noting the importance of the fiber's acceptance angle and material composition.
  • Another participant clarifies that the fiber optic cable is a single, solid, 14mm end glow cable made of poly-rubber plastic and PVC jacketed.
  • A later reply specifies that the fiber optic cable is made of PMMA plastic.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the effectiveness of the Fresnel lens in this context, and multiple aspects of the problem remain contested or unclear.

Contextual Notes

The discussion lacks specific details regarding the acceptance angle of the fiber optic cable, which may impact light transmission efficiency. Additionally, the implications of heat loss have not been quantified.

Fritzo130
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Hello,

I have a 12x12" fresnel lens and I want to place a 14mm diameter fiber optics cable at the focal point to transport the light ~2.5 ft.

Would there be any heat loss? And what percentage of the light would exit the fiber optics?

Thanks,

Fritz Laun
 
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This problem is incompletely specified: what is the acceptance angle of the fiber? What is it made of?

14mm is a (ahem) large diameter for a fiber- is it a fiber bundle? or a light pipe? Perhaps a liquid light guide?
 
The fresnel lens would have its focal point hitting normal to the end of the fiber optic cable.

All I know about the material of the fiber optic cable is that is a "poly-rubber plastic".

It is a single, solid, 14mm fiber optic end glow cable that is PVC jacketed.
 
It is PMMA plastic.
 

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