Zhenqi Niu

Moiré lenses offer a compact form factor and rapid focal-length tuning through the rotation of two conjugate sub-lenses to exploit diffractive effects. Although they have been applied in monochromatic, infrared, and terahertz zoom systems, the wavelength-dependent zoom characteristics resulted in rarely applying in hyperspectral systems.

The industrial robot-based polisher has wide applications in the field of optical manufacturing due to the advantages of low cost, high degrees of freedom, and high dynamic performance. However, the large positioning error of the industrial robot can lead to surface ripple and seriously restrict the system performance, but this error can only be inefficiently compensated for by measurement before each processing at present.

Abstract Phase measuring deflectometry is a powerful measuring method of complex optical surfaces that captures the reflected fringe images associated with a displaying screen and calculates the normal vectors of the surface under test (SUT) accordingly. The captured images are usually set conjugate to the SUT, which in turn makes the screen defocused.