REFRACTIVE POWER MAPPING OF PROGRESSIVE POWER LENSES USING TALBOT INTERFEROMETRY AND DIGITAL IMAGE-PROCESSING

被引：11

作者：

NAKANO, Y ^{[1
]}

OHMURA, R ^{[1
]}

MURATA, K ^{[1
]}

机构：

[1] HOKKAIDO INST TECHNOL,DEPT APPL ELECTR,SAPPORO 006,JAPAN

来源：

OPTICS AND LASER TECHNOLOGY | 1990年 / 22卷 / 03期

关键词：

fringes (moiré); interferometry (Talbot); lens testing;

D O I：

10.1016/0030-3992(90)90107-F

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A method of refractive power mapping of a lens is presented which is based on Talbot interferometry and utilizes a digital image processor. By adding a digital image processing system, fast measurement of a lens power distribution is feasible. A test lens is placed in front of two collinearly arranged gratings. The light passing through the test lens produces a shifted Talbot image of the first grating on the second grating and generates moiré fringes. Given the inclination angle of moiré fringes, the refractive power of the lens can be calculated. The calculation is performed using a digital image processor. This method is effective in finding the refractive power distribution of progressive power lenses. © 1990.

引用

页码：195 / 198

页数：4

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