The unique diffractive properties of gratings have made them essential in a wide range of
applications, including spectral analysis, precision measurement, optical data storage, laser …

Chromatic confocal technology is widely used for precise, steady, and efficient displacement
measurement in many industrial fields. It employs the confocal and dispersion principles to …

Grating interferometers highly valued for high resolution, straightforward benchmark, and
insensitivity to environmental disturbances have become one of the most mainstream …

A blazed grating interferometer with high-fold optical subdivision is proposed based on the
optical path design of Mach-Zehnder interferometer. In the designed measurement system …

In the field of precision measurement, subdividing displacement within the grating period to
achieve high precision and high resolution remains a significant challenge. For subdivision …

The Doppler effect can be divided into two types: the linear Doppler effect and the rotational
Doppler effect (RDE). The RDE of a vortex beam has attracted extensive attention in …

This paper presents an innovative GPI-NCCSR subdivision approach for grating
displacement sensor based on grating projection imaging (GPI) and normalized cross …

Linear displacement encoder sensors extensively appear in high-precision instruments, in
which the core scale is usually bonded with the scale base by adhesives. However, the …

In order to solve the problem of the mutual limitations of large measurement range and high
precision of absolute grating encoders, this paper employs absolute codes to individually …

In this work, a solution based on sub-sampling technology for heterodyne signals is
proposed. While achieving higher measurement resolution and measurement speed, the …