Optics and Optical Coatings

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.

A cylindrical achromat is a single component made by joining two cylindrical surface lenses with different refractive indices.

These lenses, 20 mm in length, are made of a synthetic fused silica material and have a high transmission value in the ultraviolet wavelength range of 180 - 400 nm.