Fresnel-Linse F-51 - AstroMedia
Special Fresnel convex lens characterized by a combination of lightness, low thickness, and high optical performance.
It has a particularly fine groove spacing of only 0.5 mm, therefore a very good magnification image.
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.
1 Fresnel sheet magnifier made of plastic film, 60 x 60 mm,
Thickness 0.43 mm, Groove spacing 0.5 mm
Features:
Focal length: 195 mm
Magnification: approx. 1.3x
Distributor:
PGI-Skarabäus, Im Kränzliacker 9, 79576 Weil am Rhein, Germany, pgi-shop.de
PGI-Skarabäus, Lerchenstrasse 38, 4147 Aesch, Switzerland, pgi-shop.ch
Manufacturer: AstroMedia GmbH, Im Wirrigen 30, 45731 Waltrop, Germany, astromedia.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.
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