Open AccessLenses axial space ray tracing measurement
Author(s) -
Weiqian Zhao,
Ruoduan Sun,
Lirong Qiu,
Libo Shi,
Dingguo Sha
Publication year - 2010
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.003608
Subject(s) - optics , ray tracing (physics) , physics , refractive index , radius , position (finance) , vertex (graph theory) , gradient index optics , lens (geology) , geometrical optics , radius of curvature , spherical aberration , curvature , paraxial approximation , geometry , mathematics , mean curvature , graph , computer science , beam (structure) , economics , computer security , finance , discrete mathematics , mean curvature flow
In order to achieve the precise measurement of the lenses axial space, a new lenses axial space ray tracing measurement (ASRTM) is proposed based on the geometrical theory of optical image. For an assembled lenses with the given radius of curvature r(n) and refractive index nn of every lens, ASRTM uses the annular laser differential confocal chromatography focusing technique (ADCFT) to achieve the precise focusing at the vertex position P(n) of its inner-and-outer spherical surface Sn and obtain the coordinate z(n) corresponding to the axial movement position of ASRTM objective, and then, uses the ray tracing facet iterative algorithm to precisely determine the vertex position P(n) of every spherical surface by these coordinates z(n), refractive index n(n) and spherical radius r(n), and thereby obtaining the lenses inner axial space d(n). The preliminary experimental results indicate that ASRTM has a relative measurement error of less than 0.02%.