I was doing some thinking lately and couldn't find any research on the subject of using bigger magnifying lenses or screens to increase the focus point of a light.

I know the calculations behind light interactions and lenses, but have never seen or heard the principles being applied to increase light, to increase yield.


Say if you had a 1' tall plant (from the ground respectively), a strong lens above that, and a good light above those, say at 2', Could you place the lens(es) in a position to help focus the light, increasing photosynthesis ect...


Let me know. It may be time for some new experiments.

Hi m8,have u ever tried using a magnifying glass outside and concentrate it on the top of ur hand????? OUCH !!!
just imagine a 600w a coupkle feet away,there will b fires lol
thats wot i recon.im using mirrors in my room angling them slightly so the light reflects up from the bottom of the plant and is working gr8

I'm thinking about setting up something an experiment, with a control of course. But maybe, 2 clones, 2 100watt CFl (need a single small light source kinda like the sun) and 2 identical rooms,soil,nuits,ect. The only difference being the use of a lens of some sort on the test plant.

I don't want to smoke the plant under the light, i only intend on having the light focused slightly, catching maybe 75% of the plant in "concentrated" light. I have a huge projection screen, a very large Magni Lens and will probably do some research before i invest.

So, you are essentially trying to counteract the broadcasting of light from the reflector? "Hot Spots" are counteractive to general plant growth, multifaceted light is productive. Plants will perform best when light is spread throughout the entire plant, hitting it from many angles. Beaming a very intense light from directly above seems counterproductive to me.

i agree wiv areoking,but u may wana luk in2 convex and concave lenses,i remeber doin about these yrs ago at skool cant remember wihich 1 duz which but 1 points beam directly on 1 spot and other 1 concentrates the beam out think its concave.hope this helps

Man, this is oddly intriguing. I believe I get what you're lookin to do, but cant imagine the cumbersome apparatus necessary to supply EVEN concentrated light to an entire plant. But am looking forward to any results you might get. If you can find the 'sweet spot', where it isnt too intense, and it isnt too spread out...I wonder if that would do anything for growth. My intuition says...if so it would be slight, and you'd need a much larger sample size to be sure the difference was anything less than, ordinary differing phenotypes.

where would you get a big enough lens?

Awesome Idea, I would like to know if the lens would turn 10,000 lumes into 15,000 or 20,000. I would like to see what this does to a plant

just buy a real fuckin light man...

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This experiment is directionless.

If you have a lens (big enough and with a low focal length), and try to concentrate the light intensity on any substance, it'll create hot spots. When i say hot i mean HOT!

In theory you could create enough concentration of heat that you could melt the surface of the Earth, but since you are only focusing one one point, you will only melt the absolute surface, and not the layer beneath (at least, not without moving the magnifying glass to shift the point of focus of the light, and continue moving is forward as you melt each level of the surface layer). You would ofcourse need a very very large magnifying glass to collect enough light to do this with.

Same goes with u. A magnifying glass wud create nothing but a very HOT POINT(of focus). It will kill ur plants, or worse, will catch fire(chances are less)


Do more research and apply some science... before conducting any experiment. Nice try though
I would love to see how the experiment progresses, i'll keep an eye
all the best

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