The Fresnel lens works like a traditional lens but has the advantage of having a much reduced thickness, which reduces its weight and cost.
The Fresnel lens can be used to converge the sun’s rays. Put the face in the sun and the light will be concentrated at a point at the focal length, allowing you to heat and/or turn on all types of material instantly.
Flexible, lightweight and unbreakable, the Fresnel lens can be used to start a fire or a barbecue, cook solar energy or even to do solar pyrography.
This large Fresnel lens is used in particular in the manufacture of the solar cooker, for which you can find the construction manual in Do It Yourself clicking here.
PRECAUTIONS FOR USE
Be careful, the temperature of the focal point can reach very high temperatures and the use of this lens is dangerous. The user is exposed to the risk of burning, glare and uncontrolled fire.
The buyer is responsible for this product. Read the instructions carefully before using for the first time.
BENEFITS AND SPECIFICITIES
- Flexible and unbreakable
- Operates in high wind conditions
- Water resistant
- Does not depend on outdoor temperatures
- Unit weight: 275g
- Size: 1450mm x 1115mm
- Thickness: 0.2mmFocal length: 2000mm
- Material: Polyvinyl chloride
- REF : LDF_XL