What is this used for and how should you use it?

it can be used for solar cooking. There are many videos - just take care - the focal point will become very hot.

Can I use this as a solar blowtorch?

Yes you can. How ever the bigger the surface area the hotter the fresnel lens will be. It also takes very very steady hands so making a frame for it at the optimum hight which will take some experimentation is the best way to make a solar torch. Just make sure the frame in which the lens sits can swivel around and you’ll get there. The glass lenses are the best though if you can find them as those never get cloudy like plastic lenses do over time and there more optically clear but the lenses out of old projector TVs are the best as those are huge if you can find them but they are plastic though but you can very easily melt steel, rock or any material with those things. Hope this helps you. Regards Stu.

What is the magnification? Can it be used for reading?

I don't think it would be suitable for reading. It has to be held away from the object and is quite large and heavy. Magnification is x 3.

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Large Rigid Solar Fresnel Lens 395mm x 395mm Focal Length 220mm

Product ID: 52555637

Details

Brand
DarwinUK
Colour
Transparent
Item weight
0.99 Pounds
Operation mode
Manual
Product dimensions
39.5L x 39.5W

🎯220mm precise focal length

📏395mm x 395mm large lens

🔍3x magnification power

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Description

🔆 Ignite your curiosity and power your projects with precision solar optics!

RIGID DURABLE DESIGN - Built to last with a sturdy frame that guarantees consistent, high-performance optical results every time.
TRIPLE MAGNIFICATION IMPACT - Experience 3x magnification that outperforms standard magnifiers for science, solar, or creative projects.
PINPOINT 220 MM FOCAL PRECISION - Engineered groove pitch of 0.5mm ensures razor-sharp light concentration for ultimate clarity.
MASSIVE 15 X 15 OPTICAL CANVAS - Maximize your light gathering and projection with a large, professional-grade Fresnel lens.
SOLAR POWERED FIRESTARTER HEATER - Harness intense sunlight to ignite fires or boil water—perfect for eco-conscious outdoor enthusiasts.

This Large Rigid Solar Fresnel Lens (395mm x 395mm) features a 220mm focal length and 0.5mm groove pitch, delivering 3x magnification. Designed for versatile applications including light gathering, projection, and solar energy concentration, it offers professional-grade clarity and durability for demanding optical and outdoor uses.

Specifications

ASIN	B01MU4HR20
Best Sellers Rank	50,072 in Garden ( See Top 100 in Garden ) 274 in Continuous Output Lighting 629 in Magnifying Glasses 3,116 in Garden Furniture & Accessories
Brand	DarwinUK
Colour	Transparent
Customer Reviews	4.1 4.1 out of 5 stars (35)
Item Dimensions L x W	39.5L x 39.5W centimetres
Item Weight	0.99 Pounds
Manufacturer	DarwinUK
Number of Items	1
Number of Packs	1
Operation Mode	Manual
Part Number	ViiAN
UPC	635131149269
Unit Count	1.0 count

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59225CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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