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Zhiyuan Yu, Xiaoxia Wu and Fuguo Wang
Active optics is a key technology in ground-based large-aperture telescopes. The active correction of the surface shape of the primary mirror is used to reduce the surface shape error and improve the imaging quality. At present, the structure of the acti...
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Cong Tuan Truong, Thanh Hung Nguyen, Van Quang Vu, Viet Hoang Do and Duc Toan Nguyen
This study proposes a low-cost and reliable smart fire alarm system that utilizes ultraviolet (UV) detection technology with an aspherical lens to detect fires emitting photons in the 185?260 nm range. The system integrates the aspherical lens with an ac...
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Ruoxin Liu, Zexiao Li, Yiting Duan and Fengzhou Fang
Off-axis reflective optical systems find wide applications in various industries, but the related manufacturing issues have not been well considered in the design process. This paper proposed a design method for cylindrical reflective systems considering...
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Xupeng Li, Wei Wang, Jinfeng Shi, Yanjun Qu and Xuewu Fan
This paper presents a passive buffer system of connection mechanism for space-assembled segmented mirrors. The purpose of assembling telescope in space is to overcome the limits of launch volume and mass to support ever increasing aperture sizes. Using t...
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Ricardo E. Arriagada D.
Pág. 167 - 177
Construction worldwide is under great pressure to generate significant changes in the sector. A significant change requires a multidimensional vision that integrates different perspectives, promoting a deep knowledge of the constructive process and it?s ...
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Nicola Fabris, Paolo Miotti, Fabio Frassetto and Luca Poletto
A new monochromator with high spectral resolution in the extreme ultraviolet (XUV) has been developed for high-order laser harmonics selection. The system has three optical elements?a cylindrical (or spherical) focusing mirror, a uniform-line-spaced plan...
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Rocio Fernandez Flores, Carlos Martin-Portugues Montoliu, Edith Guedella Bustamante
Pág. 896 - 905
There are many initiatives in the market capable to assess some aspects of sustainability for roads (mainly environmental). For instance, in America it should be noted the Greenroads, Envision and Invest certification systems. In Europe, it must be highl...
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