Description: Large Plastic FRESNEL Sheet Lens Buy 3 Get 1 Free This item is a brand new full page Magnification Sheet/FRESNEL Lens Sheet measuring 7" X 10" Description Thickness: 0.4mm Weight: 44 grams Material: optical PVC Groove pitch: 0.3mm Focal length: 30cm (~1 FT) Size: 7 inch x 10 inch Fresnel lenses are most often used in light gathering applications, such as condenser systems or emitter/detector setups. Fresnel lenses can also be used as magnifiers or projection lenses. This Lens is also great for the fine print in books, magazines, maps, telephone directories, recipes, etc. This can really be a great and creative gift to children as a toy and senior people who need visual aid. Similar lens is listed at $63.80 in Edmund industrial Optics catalog. Don't be fooled by 6x or 3x lenses. The real properties of a Fresnel lens are the size and focal length. If you wanna buy/bid a Fresnel lens, ask for the size and focal length in advance. Some auctions here in eBay claim that they have X times Fresnel lenses but they are not telling you the exact focal length and size. For an optical lens, the shorter the focal length, the more power it has. The larger the lens, the brighter the image. For a page size Fresnel lens, it is impossible to fabricate lens with focal length less than 30cm (almost 1 foot). If you got a Fresnel lens, you can check the focal length of it by focusing the sun light. Why buy from us? The lenses are carefully packed, so you do not get lenses with scratches. We ship from Florida, US and you usually get the item in 3 to 5 days for US can 5 to 7 days to Canada. Plans for Projection TV with this Lens Search the internet under DIY PROJECTION. I use google to search and it's great. First couple links should show great links. If you have hard time finding it, just google "DIY Projection TV Plan Steps". Can't believe people are selling those plans that are already available for FREE. Solar Applications This Fresnel lens is also very good for experiments of gathering solar energy. Thanks for its large size, it usually can start a fire within 2 seconds in a normal sunny day. I personally can use it to start melting an aluminum can around 45 seconds under Florida sunshine. Try it your ways to boil a bottle of water, start a camp fire, or build a water heat pipe, etc. I guarantee that you have a lot fun! Shipping and Handling The package will be shipped within 24 hours from FL after receiving the payment. US buyers only. If you buy 3 lenses, just pay the s&p for the 3 and we will include the 4th one for free. This listing is a positive lens. For negative Fresnel lens as a wide angle rear window safety lens for SUV and mini vans, please check my other listing items or contact me. We have 8 x 10 wide angle rear view lens for sale. Thank you for looking. Happy bidding.
Price: 4.88 USD
Location: FAST SHIPPING
End Time: 2024-11-21T15:53:53.000Z
Shipping Cost: 0 USD
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Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Type: 7inx10in
Brand: Solar
