Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Ya Jun Zhang"'
Publikováno v:
Advanced Materials Research. 739:394-399
LED has characters of small size, long life and low power consumption, and it is environmental friendly. These advantages make LED have a huge market in the lighting industry. LED with the light distribution design can meet the requirements of the ap
Autor:
Ying Liu, Shi Bao Li, Yang Zhou, Daming Wu, Hai Long Wei, Ya Jun Zhang, Xiu Ting Zheng, Hong Xu
Publikováno v:
Advanced Materials Research. :1274-1278
This thesis is devoted to the research on different microstructures design of lighting LED fluorescent lamp diffuser,and the simulation analysis of the light and distribution graph of 2D microstructures array diffuser of C semi-cylinder lens and V-cu
Autor:
Ying Liu, Xiaolong Gao, Yang Zhou, Ya Jun Zhang, Daming Wu, Hong Xu, Xiu Ting Zheng, Shi Bao Li
Publikováno v:
Advanced Materials Research. :1279-1283
In the paper, the transmission process of light in the light diffuser plate of micro V-cut prism structure was analyzed and the uniformity and transmittance of the diffuser were calculated based on Light Tools software; At the same time, the effect o
Publikováno v:
Key Engineering Materials. 503:232-235
In this paper, the relations between scattering intensity and the radius of scattering particles, the refractive and the wavelength have been studied based on the MATLAB software, and the relations between the concentration of the particles, the radi
Publikováno v:
Key Engineering Materials. 503:255-259
The diffusers with microlens arrays and V-cut micro structures of LED light were designed in this paper. Based on the theory of non-linear ray tracing, optical properties of the diffusers with three different micro structures were simulated by Lightt
Publikováno v:
Advanced Materials Research. :147-152
The effect of the aspect ratio of micro sphere lens arrays on the optical properties of diffuser including transmittance and haze have been simulated by the LightTools software, and the results show that with the increasing of the aspect ratio, the h
Autor:
Ye-Ping Li, Liang Zhang, Y.P. Zeng, Ya-Jun Zhang, Yue-Fei Wang, Yong Zhang, Jie Zhang, Genrong Liu
Publikováno v:
ResearcherID
A telescope with a larger primary mirror can collect much more light and resolve objects much better than one with a smaller mirror, and so the larger version is always pursued by astronomers and astronomical technicians. Instead of using a monolithi
Publikováno v:
ResearcherID
Telescopes with large aspherical primary mirrors collect more light and are therefore sought after by astronomers. Instead of using a single large one-piece mirror, smaller segments can be assembled into a useable telescopic primary. Because the segm
Autor:
Ye-Ping Li, Yue-Fei Wang, Ya-Jun Zhang, Xiangqun Cui, Yong Zhang, Liang Zhang, Y.P. Zeng, Genrong Liu
Publikováno v:
SPIE Proceedings.
Telescope with much larger primary can collect much more light and it is always pursued by the astronomers. Instead of using a monolithic primary, more and more large telescopes, which are now planed or in construction, invariably adopted segmented p
Publikováno v:
SPIE Proceedings.
Active optics plays an important part in segmented mirrors of astronomy telescopes. A dispersed fringe sensor(DFS) using a broadband point source is an efficient method for cophasing and is also highly automated and robust. DFS can estimate the pisto