In order to research an aspherical liquid lens with simple structure and easy realization, the double-liquid based on planar electrode is designed dielectrophoretic effect. The droplet in dielectric electrophoretic polarized electric field move towards direction of higher intensity under action dielectrophoresis forces. With change applied voltage, forces are also changes, thus contact angle at...

In this work we have designed a novel optical architecture for LED-based LCOS projectors. First we have investigated the available LEDs and characterized them. Further the LED illumination engine with the custom collection system is designed, simulated and manufactured to use them in our novel architecture that is based on two LCOS light valves. This architecture is firstly simulated and optimi...

Laser interferometers and grating based on optical interferometry are widely used in displacement measurement of precision machining testing equipment, such as the system integrated circuit due to their high precision, noncontact, large dynamic range. The ghost reflection elements may lead periodic nonlinear error interferometer also reduce alternating current/direct current. We propose a gener...

As for the optical measurement, the longer the focal length of collimator is, the less the measurement error is. However, the longer the focal length is, the more difficult the optical design is. It's higher application value to design long focal length collimator with wide-view. The paper designs a collimator with 2000mm focal length, 4 degree field of view and its wavelength range is from 480...

A novel three-dimensional elliptical-shaped Fresnel lens (ESFL) analytical model is presented to evaluate and maximize the solar energy concentration of Fresnel-lens-based concentrators. AutoCAD, Zemax Ansys software were used for ESFL design, performance evaluation temperature calculation, respectively. Contrary previous modeling processes, based on edge-ray principle with an acceptance half-a...

A new methodology describing the effects of aperiodic and multiplexed gratings in volume holographic imaging systems (VHIS) is presented. The aperiodic gratings are treated as an ensemble of localized planar gratings using coupled wave methods in conjunction with sequential and non-sequential ray-tracing techniques to accurately predict volumetric diffraction effects in VHIS. Our approach can b...

Automated optical inspection is a very important technique. For this reason, this study proposes an optical non-contact slanting surface measuring system. The essential features of the measurement system are obtained through simulations using the optical design software Zemax. The actual propagation of laser beams within the measurement system is traced by using a homogeneous transformation mat...

PURPOSE To investigate the possibility of multifocal or aspherical treatment of the cornea with optical ray tracing. SETTING Institute for Refractive and Ophthalmic Surgery, Zurich, Switzerland. METHODS The optical consequences of 4 corneal shapes-global optimum (GO) for curvature and asphericity, central steep island (CSI), decentered steep island (DSI), and centered steep annulus (CSA)-fo...

Introduction: The aim of the present study was to determine burn intensity in retinal laser photocoagulation based on laser parameters; wavelength, power, beam size and pulse duration, using Optical Coherence Tomography (OCT), fundus camera, physical eye model and computer simulation in a clinical study.Materials and Methods: Participants were 10 adult patients between 50-80 years with prolifer...