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Cz Garden Supply 8.3" x 11.75" LARGE 3X Fresnel Lens FULL PAGE Magnifier - Solar Oven/DIY Projection TV PLANS (1 pack PREMIUM GRADE Large Lens)

Cz Garden Supply 8.3" x 11.75" LARGE 3X Fresnel Lens FULL PAGE Magnifier - Solar Oven/DIY Projection TV PLANS (1 pack PREMIUM GRADE Large Lens)

Q: What is the focal length? Thank you.

The groove pitch is 0.5mm. The focal length is 320mm

Q: Cant I cut this into a smaller sizes with an exacto knife or box cutter?

Wow, a bunch of wrong answers. Not only is it possible to trim the edges and use the center portion, it is even possible to cut it into sections, and each section will continue to function. The only difference is that a lens cut from a location not in the center will need to be held over to one side. If it isn't apparent what the total effect will be, just imagine that you took the lens and covered half of it with paper and tape, and then covered have of the remaining rectangular piece, so that once again you have a square section. Obviously this section has to be held to one side, and it probably wouldn't work very well for a reading lens. But you certainly could still use it to start a fire.

Q: what is the magnification

Unlike with a telescope or a microscope, a magnifying lens's magnification varies as you move closer to or farther from the object you are observing. I can tell you that it can project the light from the sun to a point about 1/2" in diameter. This is a concentration, compared to the size of the rectangular lens, of almost a factor of 500. That doesn't mean that you can see somethings 500 times its size by looking through the lens. What is means is that it has a huge amount of light gathering surface and focuses it on a very small spot. This may not be the answer you are looking for; but I can't think of a better way of stating it. It can ignite a fire in a second or so.

Q: How can it be used for 'do it yourself solar cooking'?would this size be bigenough to cook?wouln't it need reflector to reflect to the bottom of pan?

I have seen a fresnel lens used to cook (at burning man). They pointed the beam at a cast iron and cast iron pans are good at dispersing the heat evenly across the pan. It probably took a while for it to heat up but it was definitely working.

4.4/5

Product ID: 265568227

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Details

Brand
Cz Garden
Colour
1pack
Batteries required?
No
Item weight
50 g
Lens material
Polyvinyl

📏Large 8.3" x 11.75" viewing area

🔍3X magnification power

☀️Ideal for solar oven & DIY projection

Description

🔍 Elevate your vision—big lens, bigger possibilities!

LIGHTWEIGHT PORTABLE - At just 49.9g, carry precision optics anywhere effortlessly
DURABLE PREMIUM PLASTIC - Engineered for longevity and consistent performance
GENEROUS FULL PAGE SIZE - Expansive 8.3" x 11.75" lens covers more surface area for versatile use
MULTI PURPOSE INNOVATION - Perfect for solar ovens, DIY projection TVs, and creative projects
CRYSTAL CLEAR 3 X MAGNIFICATION - See every detail with premium-grade clarity

The Cz Garden Supply 8.3" x 11.75" Fresnel Lens offers 3X magnification in a lightweight, premium plastic sheet designed for versatile applications including solar ovens and DIY projection TVs. Its large full-page size ensures broad coverage, making it an essential tool for professionals and hobbyists seeking precision and innovation.

Have a Question? See What Others Asked

What is the focal length? Thank you.

Cant I cut this into a smaller sizes with an exacto knife or box cutter?

what is the magnification

How can it be used for 'do it yourself solar cooking'?would this size be bigenough to cook?wouln't it need reflector to reflect to the bottom of pan?

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

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Brand	Cz Garden Supply
Model Number	CzFLA4-1
Color	1pack
Product Dimensions	28.96 x 20.32 x 0.76 cm; 49.9 g
Material	Plastic
Item Weight	49.9 g

Cz Garden Supply 8.3" x 11.75" LARGE 3X Fresnel Lens FULL PAGE Magnifier - Solar Oven/DIY Projection TV PLANS (1 pack PREMIUM GRADE Large Lens)

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