In spite of the fact that many simulation programs have already been commercialized, this article provides a reliable methodology for the simulation of the director field of liquid crystal. The present method is easier to be applied than ref. [1,2], especially in various asymmetric pretilt orientations and twists angles. Through this technique, ITRI/OES is developing a series of spreadsheets. Present work is simple and easy to be extended to dynamics and two/three dimensional simulations.The giving grid test also shows that for small discrete numbers the errors will become serious while position is near the rubbing surface. Some of the published simulation works do not mention about this.

ITRI/OES has developed a system for the measurements of LCoS systems. This equipment is designed to be an experimental toolkit for the study of different optical elements under different configurations and environments. Using this apparatus we performs several thermal experiments on a PBS. The experimental results indicate that the thermal effects on the PBS are conspicuous. An optimal working temperature is required for the PBS to get a good image quality. Experiments on stress birefringence effects of the PBS are also made.

In this article we present a simple optical engine system that using the wired grid component to construct the LCOS engine. The performance of this optical engine (ITRIBOX) is suitable for the portable applications.

Hyperbolic metamaterials (HMMs) with highly anisotropic dispersion have shown their unique advantages in constructing platforms for enhancing and manipulating light–matter interactions. However, it is challenging to substantially utilize the enhancing effect of HMMs because of the large momentum mismatch between photons in HMMs and in free space. In addition, the functionalization of HMMs has not yet been sufficiently explored, leaving great unachieved developments of relative nanophotonic systems. Here, we realize effective energy coupling by simply applying a single plasmonic nanoantenna onto the surface of HMMs. In terms of the external light source, the incident light can be coupled into the HMMs and focused at nanoscale regions by the nanoantenna, indicating the potential for precise spatial control of light–matter interactions. As for photon emitters inside the HMMs, the out-coupled light energy is conspicuously enhanced, and, with rational position arrangement, emitters with different wavelengths can be enhanced and out-coupled by the same structure. Furthermore, by engineering the morphology of the nanoantenna, a multiwavelength photon routing device is designed, where the photons with different wavelengths can be split by both propagating directions and polarization. This scheme of single nanoantenna hybridized HMMs will not only benefit further applications of HMMs but also provide new inspiration for the design of plasmonic-based light manipulation devices.

In order to eliminate the thermal issues of the polymer based polarizer and thermal induce birefringence of bulky PBS, the wire-grid type polarizer is a promising optical component.However, as a part of the imaging optics, mechanical holding may affect the image qualities. In this article, two configurations for using wire-grid polarization are introduced. The image defects including astigmatism and distortion due to improper mechanical holding are evaluated.