Fresnel lens F-53 - AstroMedia
Fresnel collecting lens in XXL format (almost DIN A 4!), only 0.6 mm flat and 39 g light. Enlarges an entire book page 2-fold.
Caution! This lens is at the same time an incredibly strong burning lens that concentrates the sun’s heat in the focal spot 400 times and makes dry wood go up in flames immediately.
Fresnel lenses (“leaf magnifiers”) are strong like solid lenses, but light and flat like paper. In 1821 the French physicist A. L. Fresnel invented a completely flat lens. Its surface is provided with concentric prismatic grooves which ensure the collection or diffusion of light. Its stunning optical effect exerts a strong fascination. Today they are used, for example, in spotlights and lighthouses.
Focal length: + 290 mm
Size: 210 x 273 mm
Distributor:
PGI-Skarabäus, Im Kränzliacker 9, 79576 Weil am Rhein, Germany, pgi-shop.de
PGI-Skarabäus, Unterdorfstrasse 23a, 4143 Dornach, Switzerland, pgi-shop.ch
Manufacturer: AstroMedia GmbH, Im Wirrigen 30, 45731 Waltrop, Germany, astromed.de
Adult supervision:
Children under 14 years of age should only use the kit under adult supervision to avoid risks from improper handling.
Risk of injury:
Be particularly careful when handling pointed and sharp parts! Use sharp tools carefully, if necessary take appropriate safety measures to avoid injuries.
Fire hazard:
Keep away from open fire and heat sources. Product contains highly flammable materials.
Danger from sunlight:
Never look directly at the sun without using a suitable sun filter, as this can cause serious eye damage.
Use of adhesive:
When using adhesive, follow the manufacturer's safety instructions. Work in well-ventilated rooms and avoid skin or eye contact.
Intended use:
The kit may only be used in accordance with the enclosed instructions. Independent modifications can affect the functionality and safety of the built model.
€5.90
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