SPIE Optical Systems Design最新文献_第8页

Multiple scale modeling of Al2O3 thin film growth in an ion beam sputtering process 离子束溅射过程中Al2O3薄膜生长的多尺度模拟

SPIE Optical Systems Design Pub Date : 2015-09-23 DOI: 10.1117/12.2191049

M. Turowski, M. Jupé, T. Melzig, A. Pflug, D. Ristau

引用次数: 1

Near-to-eye displays with embedded eye-tracking by bi-directional OLED microdisplay 通过双向OLED微显示器嵌入眼球追踪的近眼显示器

SPIE Optical Systems Design Pub Date : 2015-09-23 DOI: 10.1117/12.2206168

U. Vogel, P. Wartenberg, B. Richter, Stephan Brenner, Judith Baumgarten, M. Thomschke, K. Fehse, O. Hild

引用次数: 1

High-efficiency embedded transmission grating 高效嵌入式传输光栅

SPIE Optical Systems Design Pub Date : 2015-09-23 DOI: 10.1117/12.2191223

S. Ratzsch, E. Kley, A. Tünnermann, A. Szeghalmi

{"title":"High-efficiency embedded transmission grating","authors":"S. Ratzsch, E. Kley, A. Tünnermann, A. Szeghalmi","doi":"10.1117/12.2191223","DOIUrl":"https://doi.org/10.1117/12.2191223","url":null,"abstract":"In this study, we present high efficiency embedded gratings produced by atomic layer deposition (ALD). The chosen embedding material is a nanolaminate, which consists of alternating arranged titanium dioxide (TiO2) and alumina (Al2O3) layers, where the TiO2 layers are by a factor of 25 thicker than the Al2O3 layers. Consequently, the refractive index nearly equal to the refractive index of pure TiO2 layers. Titanium dioxide has one of the highest refractive index among dielectrics and no absorption at the operating wavelength. A pinhole free embedding of the grating is essential, since even tiny air pockets will reduce the efficiency of the diffraction optic. This has been successfully realized. However, the ALD coating produces indentations on the surface of the embedded grating. The method to remove the indentations in the excess layer on the embedded grating is discussed. The planarization is done by ion beam etching and the oxygen depletion of the top TiO2 component is fixed by thermal treatment in O2 atmosphere. Finally, we developed an embedded grating with transmission efficiency higher than 97.0 % at 1030 nm wavelength. The experimentally measured efficiency is in excellent agreement with the theoretical value obtained by rigorous coupled wave analysis. In contrast, a conventional, binary grating with the same period reaches only a maximum theoretical efficiency of 92.3 % at the same wavelength in Littrow-configuration.","PeriodicalId":212434,"journal":{"name":"SPIE Optical Systems Design","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123947527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Measurements of angular and spectral resolved scattering on complex optical coatings 复杂光学涂层上角散射和光谱分辨散射的测量

SPIE Optical Systems Design Pub Date : 2015-09-23 DOI: 10.1117/12.2191227

S. Liukaitytė, M. Zerrad, M. Lequime, T. Begou, C. Amra

引用次数: 6

Optimization of novel phase separating IBS process 新型相分离IBS工艺的优化

SPIE Optical Systems Design Pub Date : 2015-09-23 DOI: 10.1117/12.2191229

M. Jupé, T. Willemsen, S. Malobabić, K. Schuba, D. Ristau

{"title":"Optimization of novel phase separating IBS process","authors":"M. Jupé, T. Willemsen, S. Malobabić, K. Schuba, D. Ristau","doi":"10.1117/12.2191229","DOIUrl":"https://doi.org/10.1117/12.2191229","url":null,"abstract":"During the last years, optical low loss components gained more and more industrial interest and led to novel approaches for the production in optical coating technology. The application of filtered deposition technologies promises a significant reduction of particle contamination. Usually, filtered techniques are applied in combination with processes which produce a high level of undesired particles, like the cathodic arc deposition. In the present contribution, a magnetic field filter is applied in combination with a high quality ion beam sputtering process. The focus of the investigation constitutes the modulation of the guiding process with respect to the guiding efficiency. Numerical investigations reveal the trajectories of the ions during the guiding process and allow to analyze the influence of the magnetic field and the resulting electrostatic potential. In this study, the guiding effect is observed to be dominated by the electric potential compared to the magnetic field. However according to the simulations, very high ion guiding efficiencies can be achieved using moderate magnetic fields and electrical potentials. Furthermore, it is demonstrated that the experiemental and calculated efficiencies agree well. Consequently, the simulation is the basis for a further optimization of the filtered ion beam sputtering processes.","PeriodicalId":212434,"journal":{"name":"SPIE Optical Systems Design","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127681568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Optical design of precision approach path indicators in a portable runway lighting system 便携式跑道照明系统中精密进近路径指示器的光学设计

SPIE Optical Systems Design Pub Date : 2015-09-23 DOI: 10.1117/12.2191122

John D. Walker, Adam Monaghan

引用次数: 0

Direct design of a two-surface lens including an entrance pupil for imaging applications 直接设计两面透镜，包括用于成像应用的入口瞳孔

SPIE Optical Systems Design Pub Date : 2015-09-23 DOI: 10.1117/12.2191045

Yunfeng Nie, F. Duerr, H. Thienpont

{"title":"Direct design of a two-surface lens including an entrance pupil for imaging applications","authors":"Yunfeng Nie, F. Duerr, H. Thienpont","doi":"10.1117/12.2191045","DOIUrl":"https://doi.org/10.1117/12.2191045","url":null,"abstract":"A multi-fields optical design method aiming to calculate two high-order aspheric lens profiles simultaneously with an embedded entrance pupil is proposed in this paper. The Simultaneous Multiple Surfaces design method in two dimensions (SMS2D) is used to provide a better understanding of how N surfaces allow perfect coupling of N ray-bundles. In contract to this perfect coupling, our multi-fields design approach is based on the partial coupling of multiple ray-bundles. This method allows calculating the Optical Path Lengths (OPL) during the process, directly building connections between different fields of view. Both infinite and finite conjugate objectives can be designed with this approach. Additional constraints like surface continuity and smoothness are taken into account to calculate two smooth and accurate surface contours. Sub-aperture sampling factor is introduced as a weighting function for different fields which allows for a very flexible performance control over a wide field of view. A RMS 2D spot size function is used to optimize the weighting factor to achieve a very well-balanced imaging performance. A wide-field objective and a moderate aperture lens are designed and analyzed to demonstrate the potential of this design method. The impact of different weighting functions for the sub-aperture sampling is evaluated accordingly. It’s shown that this design method provides an excellent starting point for further optimization of the surfaces coefficients and initial design parameters: resulting in a very good and well-balanced imaging performance over the entire field of view.","PeriodicalId":212434,"journal":{"name":"SPIE Optical Systems Design","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127735500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Freeform étendue-preserving optics for light and color mixing 用于光和颜色混合的自由形状的保持光斑的光学元件

SPIE Optical Systems Design Pub Date : 2015-09-23 DOI: 10.1117/12.2191048

S. Sorgato, R. Mohedano, J. Chaves, A. Cvetković, M. Hernández, P. Benítez, J. Miñano, H. Thienpont, F. Duerr

{"title":"Freeform étendue-preserving optics for light and color mixing","authors":"S. Sorgato, R. Mohedano, J. Chaves, A. Cvetković, M. Hernández, P. Benítez, J. Miñano, H. Thienpont, F. Duerr","doi":"10.1117/12.2191048","DOIUrl":"https://doi.org/10.1117/12.2191048","url":null,"abstract":"Today’s SSL illumination market shows a clear trend towards high flux packages with higher efficiency and higher CRI, realized by means of multiple color chips and phosphors. Such light sources require the optics to provide both near- and far-field color mixing. This design problem is particularly challenging for collimated luminaries, since traditional diffusers cannot be employed without enlarging the exit aperture and reducing brightness (so increasing étendue). Furthermore, diffusers compromise the light output ratio (efficiency) of the lamps to which they are applied. A solution, based on Köhler integration, consisting of a spherical cap comprising spherical microlenses on both its interior and exterior sides was presented in 2012. When placed on top of an inhomogeneous multichip Lambertian LED, this so-called Shell-Mixer creates a homogeneous (both spatially and angularly) virtual source, also Lambertian, where the images of the chips merge. The virtual source is located at the same position with essentially the same size of the original source. The diameter of this optics was 3 times that of the chip-array footprint. In this work, we present a new version of the Shell-Mixer, based on the Edge Ray Principle, where neither the overall shape of the cap nor the surfaces of the lenses are constrained to spheres or rotational Cartesian ovals. This new Shell- Mixer is freeform, only twice as large as the original chip-array and equals the original model in terms of brightness, color uniformity and efficiency.","PeriodicalId":212434,"journal":{"name":"SPIE Optical Systems Design","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132029011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical design and stray light analysis for the JANUS camera of the JUICE space mission JUICE航天任务JANUS相机光学设计及杂散光分析

SPIE Optical Systems Design Pub Date : 2015-09-23 DOI: 10.1117/12.2206170

D. Greggio, D. Magrin, M. Munari, M. Zusi, R. Ragazzoni, G. Cremonese, S. Debei, E. Friso, V. Della Corte, P. Palumbo, H. Hoffmann, R. Jaumann, H. Michaelis, N. Schmitz, P. Schipani, L. Lara

{"title":"Optical design and stray light analysis for the JANUS camera of the JUICE space mission","authors":"D. Greggio, D. Magrin, M. Munari, M. Zusi, R. Ragazzoni, G. Cremonese, S. Debei, E. Friso, V. Della Corte, P. Palumbo, H. Hoffmann, R. Jaumann, H. Michaelis, N. Schmitz, P. Schipani, L. Lara","doi":"10.1117/12.2206170","DOIUrl":"https://doi.org/10.1117/12.2206170","url":null,"abstract":"The JUICE (JUpiter ICy moons Explorer) satellite of the European Space Agency (ESA) is dedicated to the detailed study of Jupiter and its moons. Among the whole instrument suite, JANUS (Jovis, Amorum ac Natorum Undique Scrutator) is the camera system of JUICE designed for imaging at visible wavelengths. It will conduct an in-depth study of Ganymede, Callisto and Europa, and explore most of the Jovian system and Jupiter itself, performing, in the case of Ganymede, a global mapping of the satellite with a resolution of 400 m/px. The optical design chosen to meet the scientific goals of JANUS is a three mirror anastigmatic system in an off-axis configuration. To ensure that the achieved contrast is high enough to observe the features on the surface of the satellites, we also performed a preliminary stray light analysis of the telescope. We provide here a short description of the optical design and we present the procedure adopted to evaluate the stray-light expected during the mapping phase of the surface of Ganymede. We also use the results obtained from the first run of simulations to optimize the baffle design.","PeriodicalId":212434,"journal":{"name":"SPIE Optical Systems Design","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132504575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Computational imaging: the improved and the impossible 计算成像:改进和不可能

SPIE Optical Systems Design Pub Date : 2015-09-23 DOI: 10.1117/12.2193769

A. Harvey, G. Carles, Shouqian Chen, G. Muyo, J. Downing, Nicholas Bustin, A. Wood

{"title":"Computational imaging: the improved and the impossible","authors":"A. Harvey, G. Carles, Shouqian Chen, G. Muyo, J. Downing, Nicholas Bustin, A. Wood","doi":"10.1117/12.2193769","DOIUrl":"https://doi.org/10.1117/12.2193769","url":null,"abstract":"While the performance of optical imaging systems is fundamentally limited by diffraction, the design and manufacture of practical systems is intricately associated with the control of optical aberrations. The fundamental Shannon limit for the number of resolvable pixels by an optical aperture is generally therefore not achieved due to the presence of off-axis aberrations or large detector pixels. We report how co-called computational-imaging (CI) techniques can enable an increase in imaging performance using more compact optical systems than are achievable with traditional optical design. We report how discontinuous lens elements, either near the pupil or close to the detector, yield complex and spatially variant PSFs that nevertheless provide enhanced transmission of information via the detector to enable imaging systems that are many times shorter and lighter than equivalent traditional imaging systems. Computational imaging has been made possible and attractive with the trend for advanced manufacturing of aspheric, asymmetric lens shapes at lower cost and by the exploitation of low-cost, high-performance digital computation. The continuation of these trends will continue to increase the importance of computational imaging.","PeriodicalId":212434,"journal":{"name":"SPIE Optical Systems Design","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130150743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4