Absolutely perfect lenses:
- All three round, achromatic PEAK hand-held magnifiers have new achromatic optical systems, consisting of two, optically pure white glass lenses cemented to one another.
- Available with different three diameters and enlargement factors, these colour-corrected lenses are distinguished by their excellent correction factor, completely eliminating unsharp lines over the entire image field.
- The solid lens frames and rosewood handles make these achromatic working magnifiers a valuable aid in every respect.
- Provides valuable help for assembly, testing or restoration work.
- Lenses are coated on both sides to prevent reflection.
Model Features:
| Prod. No. |
Prod. No. |
Magnification | Lens Ø | Lens Type / Material | Lens Shape / Grip | Weight / Dimension |
| 180415 | PK2022-35 | 4x | Ø 36mm | Achromatic / Glass | Round / Rosewood | 73 g / 39x155x15mm |
| 1803152 | PK2022-55 | 2x | Ø 53mm | Achromatic / Glass | Round / Rosewood | 122 g / 56x175x20mm |
| 180215 | PK2022-75 | 1,3x | Ø 74mm | Achromatic / Glass | Round / Rosewood | 246 g / 77x195x25mm |
Model Features:
| Prod. No. |
Prod. No. |
Magnification | Lens Ø | Lens Type / Material | Lens Shape / Grip | Weight / Dimension |
| 180415 | PK2022-35 | 4x | Ø 36mm | Achromatic / Glass | Round / Rosewood | 73 g / 39x155x15mm |
| 1803152 | PK2022-55 | 2x | Ø 53mm | Achromatic / Glass | Round / Rosewood | 122 g / 56x175x20mm |
| 180215 | PK2022-75 | 1,3x | Ø 74mm | Achromatic / Glass | Round / Rosewood | 246 g / 77x195x25mm |
Chromatic aberration is caused by a lens having a different refractive index for different wavelengths of light (lens dispersion), meaning that different colours focus at different distances from the lens. Longitudinal and lateral chromatic aberration of a lens can be seen as "fringes" of colour 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.