|
| |
|
| Achrimatic |
 Achromatic doublets are cemented achromats made of two kinds of lenses, low dispersion positive (crown glass) and high dispersion negative (flint glass).
The differences of dispersions and shapes of both lenses are designed to minimize the chromatic aberrations at blue (486.1nm), green (546.1nm) and red (656.3nm). Therefore these lenses perform throughout the visible spectrum.
The differences of dispersions and shapes of both elements are effective to decrease spherical aberration. Spherical aberrations of them are much improved than spherical . Spherical aberrations of these lenses are minimized at infinite conjugate ratios.
Every product of Safetyrich Optics by customer's request. |
|
|
