![.opt file soltrace .opt file soltrace](https://www.nrel.gov/csp/assets/images/soltrace-screenshot-elementstats.gif)
We study the imaging properties of windows that rotate the direction of transmitted light rays by a fixed angle around the window normal. The simulation results show that the infrared imaging system based on wavefront coding can control thermal defocus in a temperature varying from -60✬ to 60 ✬, at the same time the weight and cost of optical elements are reduced by approximately 40%. System three is designed to compare the imaging performance before and after reducing lens in wavefront coding IR system. System one and two are designed to compare the influence before and after the insertion of phase mask. Meanwhile, we designed three IR systems to put up contrast experiments. The phase mask is designed to ensure that the modulation transfer function (MTF) is approximately invariant in the range of working temperature. We report here the optic design of the wavefront coding IR system based on Zemax. In this paper, the combination of wavefront coding technique and infrared imaging system has been discussed. After digital processing, the system is insensitive to defocus. Wavefront coding includes a phase mask at the pupil which can re-modulate wave front so as to produce an encoded image. For traditional infrared imaging system, athermalization is necessary to maintain imaging performance which may increase complexity and cost of the imaging system. We describe the application of wavefront coding technique for infrared imaging system to control thermal defocus.
#.opt file soltrace software
We also present ray-trace diagrams of the simulated compression process of the adaptive lens using the commercial software OSLO®. An opto-mechanical analysis of the accommodation process of the adaptive lens is presented, by simulating a certain amount of radial force applied onto the SEL using the finite element method with the commercial software SolidWorks®. this model represents the anatomy of the eye as close as possible to reality by predicting an acceptable and accurate quantity of spherical and chromatic aberrations without any shape fitting. For this work, we have adopted the parameters of the schematic eye model developed in 1985 by Navarro et al. In this work, we present the design, simulation and analysis of an adaptive solid elastic lens that in principle imitates the accommodation process of the crystalline lens in the human eye.
![.opt file soltrace .opt file soltrace](https://d3i71xaburhd42.cloudfront.net/c66db7115ed56ab77b17735cbb2d46c93695a6f0/17-Figure7-1.png)
Nowadays we extend our study to a particular adaptive lens known as solid elastic lens (SEL) that it is formed by an elastic main body made of Polydimethylsiloxane (PDMS Sylgard 184).
![.opt file soltrace .opt file soltrace](https://i.imgur.com/P02RERSh.jpg)
In recent years we have been working in the analysis and performance of a liquid-filled variable focal length lens, this is a lens that can modify its focal length by changing the amount of water within it. Tunable lenses are optical systems that have attracted much attention due to their potential applications in such areas like ophthalmology, machine vision, microscopy and laser processing. As a result, designs without astigmatism (at the small pupil limit) on a planar object surface have been obtained. By adding one more optical surface to the system, the shape of the rotational symmetrical object can be designed while controlling the tangential rays and sagittal rays simultaneously. In the second part, the method is extended to two surface designs with rotational symmetry and the astigmatism of the image has been studied. In these designs, not only the mapping is obtained in the design process, but also the shape of the object is found. In the first introductory part, both the rotational symmetrical and the freeform single surface imaging designs are presented using the differential equation method. The differential equation method is used to provide single optical surface imaging designs by considering the local properties of the imaging surface and the wavefronts. In the examples considered, the image from a planar object surface is virtual and located at infinity and is seen from a known pupil, which can emulate a human eye. In these designs, both object and image shapes are given but mapping from object to image is obtained through the design process. In this work, we present a novel imaging design formed by two optical surfaces with rotational symmetry.