- An apochromat, or
apochromatic lens (apo), is a
photographic or
other lens that has
better correction of
chromatic and
spherical aberration than the much...
-
largest at the time, but was surp****ed
within only a
couple of years.
Apochromatic refractors have
objectives built with special, extra-low
dispersion materials...
- from that of
commonly used gl****es, so
fluorite is
useful in
making apochromatic lenses, and
particularly valuable in
photographic optics.
Fluorite optics...
- composition, the
degree of
correction can be
further increased, as seen in an
apochromatic lens or apochromat. "Achromat" and "apochromat"
refer to the type of...
-
numerous types and designs.
Refracting designs include achromatic and
apochromatic types. Some
reflecting types are Newtonian, Schmidt–C****egrain, Maksutov-C****egrain...
- 1/30th of a
second or slower. A or APO — the lens has an
apochromatic (or near-
apochromatic)
design C — the lens is
stamped “Sekor C” on the lens barrel...
-
Corporation engineer Roland Christen, the
company is
noted for its line of
apochromatic refractors as well as high-end mounts. The
company is
located in Machesney...
-
Aspherical lens
elements APO —
Apochromatic lens element(s),
originally for "Advanced
Performance Optics", not
necessarily apochromatic OS — In-lens "Optical Stabilization"...
-
Christen 1981 VF
Roland W. Christen, an
optician and
maker of
affordable apochromatic refractors at the
forefront of
mechanical and
optical design. JPL · 11823...
-
anomalous partial dispersion.
Abnormal dispersion is
required to
design apochromatic lenses; in
contrast to the
achromatic doublets,
which converge blue and...
