No 338 JiaDing, ShangHai, China, Shanghai, Shanghai
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详情
Plano-Convex Cylindrical Lenses are ideal for
applications requiring magnification in one dimension. While
spherical lenses act symmetrically in two dimensions on an
incident ray, cylindrical lenses act in the same manner but only
in one dimension. A typical application is to use a pair of
cylindrical lenses to provide anamorphic shaping of a beam. A
pair of positive cylindrical lenses can be used to collimate and
circularize the output of a laser diode. Another application
possibility would be to use a single lens to focus a diverging
beam onto a detector array. To minimize the introduction of
spherical aberrations, collimated light should be incident on the
curved surface when focusing it to a line, and light from a line
source should be incident on the plano surface when
collimating.
The focal length of each lens can be calculated
using the following equation: f=
R/(n*1), where n
is the index of refraction and R1,R2 is the radius of curvature for
each surface of the lens. They
can be also coated with MgF2 to protect the surface or AR coated to
increase the transmission.
