paraxial


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Related to paraxial: paraxial rays

paraxial

(pă-raks -ee-ăl) Lying close to the optical axis of a lens, mirror, or system of such elements.

paraxial

[par′ak·sē·əl]
(science and technology)
Lying near the axis.
References in periodicals archive ?
The results demonstrate that the plasma shape is really influenced by laser-arc plasma interaction and the gas flowing direction and velocity, and varies with the shielding gas parameters; moreover penetration could varies considerably using a trailing paraxial nozzle, a leading paraxial nozzle or a coaxial nozzle.
Its paraxial placing, eroding and scrutinizing the 'real', constitutes in Helene Cixous's phrase, 'a subtle invitation to transgression'" (Fantasy 180).
Over the flat surface, the couple source-detector images the curved reflector through the ray that follows the trajectory S-J-G (called paraxial ray); hence, the traveltime function may be estimated dividing the path length of the ray by [v.
When the laser rays enter the sample they suffer refraction, and the marginal rays are focused deeper than the paraxial rays, an effect known as spherical aberration.
Evaluation using paraxial computed tomographic reconstruction.
It has been observed that most extragonadal teratomas are axial or paraxial to a line from the brain to the sacral area.
Vertebrates have three types of embryonic tissue not present in invertebrates: neural crest cells, ectodermic placodes, and a modified paraxial mesoderm.
Application of fluorescein stain revealed an approximately 4 mm x 3 mm dorsal paraxial, superficial corneal ulcer OS.
She covers deterministic paraxial beams, the theory of scalar stochastic beams, the theory of electromagnetic stochastic beams, the interaction of random electromagnetic beams with optical systems, random beams in linear random media, mitigating random media effects with random beams, and the weak scattering of random beams.
A plane aperture is assumed, which implies that the source must be distant as well as paraxial ([r.
Beginning with a section on light propagation, which tackles the difficult question of defining light, chapters progress to cover reflections and refractions at optical surfaces, image formation, mirrors and prisms, curved optical surfaces, thin lenses, thick lenses, mirrors, optical apertures, paraxial ray tracing, aberrations in optical systems and real ray tracing.
Comparative analysis of the male reproductive system in Bothriuridae scorpions: structures associated with the paraxial organ and the presence of sperm packages (Chelicerata, Scorpiones).