Contouring by electronic speckle pattern interferometry with quadruple-beam illumination.
نویسندگان
چکیده
We present a new arrangement for contouring by electronic speckle pattern interferometry with four illumination beams, thereby making it unnecessary to move anything during the.
منابع مشابه
Contouring by electronic speckle pattern interferometry employing dual beam illumination.
In this paper we extend and study the method for generating contours of diffuse objects employing a dual beam illumination coupled with electronic speckle pattern interferometry. The sensitivity and the orientation of the contour planes are analyzed. A novel method for tilting the planes of contours and experimental results incorporating phase shifting and fringe analysis are also presented. Th...
متن کاملGeometry for contouring by electronic speckle pattern interferometry based on shifting illumination beams.
When the method of contouring an object surface by electronic speckle pattern interferometry is based on shifting the illumination beams, the shifted phase of the interference speckle pattern has a new relationship with the depth of the test surface. Therefore the contour interval as well as the fringe sensitivity of this method has new forms. The geometry of such a situation, which differs fro...
متن کاملContouring by modified dual-beam ESP} based on tilting illumination beams
CoeItOllriag by modirttd daaal-be.m ESPI bueiI on tiltialil iII~ mialtiollll tams. A new contouring method by mcxlificd dual-beam electronic speckle pattern interferometry is proposed. Instead of tilting test objoct as used in previous single: wavelength techniques by ESPI, we introduce a tilt 10 tbe illuminating beams in order to obtain the conlour fringe patterns. The most attractive feature ...
متن کاملA mechanically stable laser diode speckle interferometer for surface contouring and displacement measurement
Electronic speckle pattern interferometry (ESPI) is demonstrated using a simple configuration consisting of a wedged window and a beamsplitter. The window serves to produce a reference beam which is in-line with the scattered object beam. The system is almost common-path and therefore provides much better mechanical stability than conventional ESPI configurations, which have widely separated be...
متن کاملA mechanically stable laser diode speckle interferometer for surface contouring and displacement measurement
Electronic speckle pattern interferometry (ESPI) is demonstrated using a simple configuration consisting of a wedged window and a beamsplitter. The window serves to produce a reference beam which is in-line with the scattered object beam. The system is almost common-path and therefore provides much better mechanical stability than conventional ESPI configurations, which have widely separated be...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Applied optics
دوره 31 31 شماره
صفحات -
تاریخ انتشار 1992