Object to having a image processing for determining the structur

Optical deformation measuring apparatus by double-writing speckl

Optical deformation sensor

Optical displacement sensor

Optical extensometer and reference line mark therefor

Optical heterodyne interference detecting apparatus for measurin

Optical isochromatic multiplier examination apparatus

Optical method and apparatus for strain analysis

Optical pressure sensor and method therefor

Optical sensor for the measurement of molecular orientation and

Optical strain gauge

Optical strain gauge

Optical strain sensor for the measurement of microdeformations o

Optical stress sensing system with directional measurement capab

Optics module for borehole stress measuring instrument