Desk Magnifier - 8x 30mm - Achromatic+
Fitted with a high resolution achromatic this magnifier provides the viewer with a crystal clear image. The high quality lens has a very high resolution and a low reflective coating.
- 8x magnification.
- achromatic glass lens (silicate glass)
- high quality
- field of view Ø30 mm
- lens opening Ø24 mm
- frame-body: transparent plastic
- dimensions: 40 x 40 x 44 mm
- weight: 30 grams
- made in Germany
Maximum printing area for advertising is is: 15 x 25 mm.
The plastics used for this product fulfill the DIN norm (Deutche Industrie Norm) including the EU requirements for processed materials.
Cheap plastics can contain contaminants such as lead or other damaging chemicals. The plastics from this product are pure and safe.
Chromatic aberration is caused by a lens having a different refractive index for different wavelengths of light (lens dispersion), meaning that different colors focus at different distances from the lens. Longitudinal and lateral chromatic aberration of a lens can be seen as "fringes" of color around the image.
Chromatic aberration of a single lens causes different wavelengths of light to have differing focal lengths.
An achromatic doublet has the same focal length for red and blue light.
As can be seen above, chromatic aberration can be minimized by using an Achromatic Lens or Achromat, in which special optical materials with differing dispersion are assembled together to form a compound lens.