A Celor lens (also known as a symmetric dialyte)
is a highly corrected
lens
A lens is a transmissive optical device which focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (''elements''), ...
of the
Dialyt type, designed for
process photography
Rear projection (background projection, process photography, etc.) is one of many in-camera effects cinematic techniques
in film production for combining foreground performances with pre-filmed backgrounds. It was widely used for many years in d ...
, involving reproduction at or near 1:1 scale.
It was developed in 1898 by
Emil von Hoegh, an optical designer working for the German company
Goerz
Rudolf Goerz (sometimes spelled Rudolph) (born 1879 and died 1935) was a German botanist.
He was particularly interested in spermatophytes
A spermatophyte (; ), also known as phanerogam (taxon Phanerogamae) or phaenogam (taxon Phaenogamae), is ...
.
References
Photographic lenses
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