Features: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.
- Thickness: 0.4mm
- Weight: 44 grams
- Material: optical PVC
- Groove pitch: 0.3mm
- Focal length: 30cm (1 foot)
- Size: 7 inch x 10 inch---------------------
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Gadget Plus (surrey, bc)