Optics & Optomechanics

Acromatic doublets are cemented achromats consisting of two different lenses: Positive low dispersion crown glass and negative high dispersion flint glass.

An economical achromat for general use, suitable for an optical system that does not require high surface quality imaging, such as a microscope or telescope objective.

By combining two lenses with different wavelength dispersion and refractive index, the resulting component provides lower spherical aberration and chromatic aberration than a single spherical lens.

Achromatic lenses that have a negative focal length.