thick lens

thick lens

[¦thik ′lenz]
(optics)
A lens in which the separation between the two surfaces is too great to be ignored in calculations of such quantities as focal length and magnification.
References in periodicals archive ?
Because a thick lens would take a long time to cool, it would speed the process to mold a core layer and then overmold two thin outer layers.
Other topics include the law of refraction as the foundation of geometrical optics, the transition from a thin to a thick lens, systems with two separated components, the single-image mirror, the plane-parallel plate, and details of a hybrid lens.
Contrary to popular belief, the many changes we have seen to the RRS (Racing Rules of Sailing) over the years have not all been devised by little old men with thick lens glasses and eye shades, sitting in a cold, sealed back room in ISAF headquarters.
Champion provides a new perspective on Polybius's political sympathies (especially his view of Rome) through the thick lens of a complex hermeneutic based on contemporary ethnography's definition of culture as "the construction and representation of discrete systems of social processes ascribable to human collectivities" (p.
TerraGlo used Makrolon FR7087 polycarbonate when it needed an optically clear material that met stringent guidelines for the 3-mm thick lens cover of its Alba Series luminaires.