Visual optics under the wavefront perspective

Arquivos Brasileiros de Oftalmologia

Sidney Júlio Faria-e-sousa¹  Gustavo Victor¹  Milton Ruiz Alves¹ 

关键词: Refractive errors/diagnosis;    Refraction ocular/physiology;    Optics and photonics;    Corneal wavefront aberration;    Mathematics;    Light;    Erros de refração/diagnóstico;    Refração ocular/fisiologia;    Óptica e fotônica;    Aberrações de frente de onda da córnea;    Matemática;    Luz;   

DOI  :  10.5935/0004-2749.20140068

来源: SciELO

【 摘 要 】

Some intriguing concepts of visual optics cannot be explained by ray tracing. However, they can be clarified using wavefront formalism. Its main advantage is in the use of the concept of vergence, which is very helpful in interpreting the optical phenomena involved in the neutralization of the ametropias. In this line of thinking, the major role of a lens is in the creation of a new light source (the image point) that orientates the refracted waves. Once the nature and position of this source is known, one can easily predict the behavior of the wavefronts. The formalism also allows for an easier understanding on how wavefronts relate to light rays and on how algebraic signs are assigned to optical distances.

【 授权许可】

CC BY   
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