Lensmeter using a lateral shearing interferometer

被引：3

作者：

Granados-Agustin, Fermin-Salomon ^{[1
]}

Jaramillo-Nunez, Alberto ^{[1
]}

Sacramento-Solano, Daniel ^{[1
]}

Percino-Zacarias, Maria-Elizabeth ^{[1
]}

Cornejo-Rodriguez, Alejandro ^{[1
]}

机构：

[1] INAOE, Puebla 72000, Mexico

来源：

OPTIK | 2012年 / 123卷 / 16期

关键词：

Ophthalmic devices; Shearing interferometry; LONG-RADIUS; PLATE; CURVATURE;

D O I：

10.1016/j.ijleo.2011.07.069

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The use of a laser shear interferometer for checking the collimation condition within a lensmeter is proposed. The interferometer consist of a wedged glass plate which produces a shear along the orthogonal direction to the wedge; when the fringes at the center of the pattern are parallel to the shear, the collimation condition is attained. The feasibility of the proposal for measuring the vertex power is experimentally shown and the accuracy of the method is under 5% of the measured value being an improvement to the commercial instruments based on the focusing of a reticule. (c) 2011 Elsevier GmbH. All rights reserved.

引用

页码：1425 / 1428

页数：4

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