Not to me and I wore a watch with a cyclops for decades all over the world.

 

You haven't been in the Sahara desert with the terrible sunshine there.

 

Distance between the cyclop and dial is too close for sunlight to be concentrated.

 

Right. More specifically, the focal length of the cyclops is significantly larger than the distance between the bottom of the cyclops lens and the surface of the dial.
The way optics work, the greater the magnification, the shorter the focal length in simple lenses like the plano convex used for watch crystal magnifiers.

 

Its an aspheric lens with a focal point distance... somewhere other than at the dial.
I think, someone please correct me.
No I have never damaged a watch dial this way before.

 

look at these pictures

2.0 camera stops down for a better look at the focal point on the dial

 

Dibs on OP's other watches after he spontaneously combusts.

 

No, I haven't. I would also assume that a watch isn't still long enough to generate any significant heat. Also, how the light is concentrated may not be conducive to generating that much heat?

 

Never had that problem, and my Subby has sat in the sun for many hours over the years 😎

 

I wish the opposite would happen- The sun would burn off that %$^#* cyclops........

 

I think a fellow WUS member had this problem: Watch in flames

 

It could happen OP, how many hours can you stay by the sun without moving your arm?? 🤔

 

My thoughts as well.....

 

Man goes in to the watch doctor and says, "Hey Doc, when I hold my arm like 'this' the sun hits my cyclops." The Dr. says "Don't hold your arm like that."

 

Sure it can happen. When I was a kid I used it to burn ants when bored. Getting the ants to crawl between the dial and the cyclops is the hard part but it does work.
As most disclaimers say....... "Don't try this at home", "Try at your own risk", "No guaranteed result", "May cause bleeding from the ears or death"..... But if you don't like your cyclops you can remove it with a little heat and a razor blade (on some watches).

 

I think there's not enough energy in that ray to burn the dial, but that was an interesting thought

 

It was sunny outside today, so I just tried it on mine. I gotta stop listening to you guys on here…….

 

Sorry no sympathy from me.

Someone learned it the hard way.

There is a reason why they invented suncream:

 

I don't know what the OP is smoking, but I want some.

 

You missed the sad news.

OP RIP.

Self combustion.

 

Just checking in to make sure the OP is ok. Hoping he hasn't blowed himself up!

 

Have never heard of damage to a watch dial from the cyclops, even one time. I have heard of a number of instances where the entire dial fades due to exposure to sunlight or intense artificial light, have seen a blue dial turn dark grey this way. I also have heard of some rangefinder cameras damaged by sitting in a window aimed toward the sun without a lens cap, and the lens burning the shutter of the camera because it IS precisely focused for that distance.

 

I have three from the 90's and no discoloration on the dial, which is what I would expect to see if the concentrated sunlight would do anything.