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Minolta的RD-175数字相机是专业人员的理想选择
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作者 Daniel Grotta Sally Wiener Grotta 贾树山 《个人电脑》 1996年第9期38-39,41,共3页
Minolta公司新推出的报价9995美元的Minolta RD-175数字型相机,是迄今为止首家推出的价格低于5位数(尽管只是稍稍低于5位数)的相机,但仍能输出极富魅力的24位高分辨率真彩色像片。对于那些需求高品质数字图象的计算机用户来说,无论将其... Minolta公司新推出的报价9995美元的Minolta RD-175数字型相机,是迄今为止首家推出的价格低于5位数(尽管只是稍稍低于5位数)的相机,但仍能输出极富魅力的24位高分辨率真彩色像片。对于那些需求高品质数字图象的计算机用户来说,无论将其应用于World Wide Web还是用于印刷中,RD-175都是上乘的选择。 展开更多
关键词 数字相机 专业人员 WINDOWS95 驱动程序 数字图象 数字型 真彩色 取景器 高分辨率 光学聚光器
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Optimum design of a polymer electro-optic microring resonator switch 被引量:1
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作者 YAN Xin MA Chun-sheng WANG Xian-yin Zhang Da-ming Liu Shi-yong 《Optoelectronics Letters》 EI 2007年第6期423-427,共5页
Novel transfer functions are presented for a polymer electro-optic mieroring resonator switches. The resonating process ot the light in the microring is simulated using the formulas. Then the optimization of the struc... Novel transfer functions are presented for a polymer electro-optic mieroring resonator switches. The resonating process ot the light in the microring is simulated using the formulas. Then the optimization of the structural parameters is performed, and the characteristics are analyzed, such as the resonance time, output spectrum, operation voltage, insertion loss and crosstalk were analyzed. The simulation results show that the designed device exhibits favorable switching functions. 展开更多
关键词 集成光学器件 聚合物 电子光学 共振器
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Nonlinear Liquid Crystal Polymer and Its Applications
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作者 SHI Yongji(Luoyang Technology College, Luoyang 471003,CHN) 《Semiconductor Photonics and Technology》 CAS 1996年第2期112-117,共6页
The transparent solid medium of a thermotropic liquid crystal polymer have a comb structure of mesogenic side chains which exhibit a nonlinear optical response of electronic origin.The main chain of the liquid crystal... The transparent solid medium of a thermotropic liquid crystal polymer have a comb structure of mesogenic side chains which exhibit a nonlinear optical response of electronic origin.The main chain of the liquid crystal polymers can be selected from a number of suitable polymerized monomeric and comonomeric structures such as polyvinyl,polysiloxane,polyoxyalkylene, polyester etc.The electrooptic light modulator is provided,which have potential to using in the systems of laser modulation and deflection,and information control in optical circuitry etc. 展开更多
关键词 Nonlinear Optics Liquid Crystal Polymer Electrooptic Light Modulator
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Optical Design of a Solar Parabolic Concentrating Collector Based on Trapezoidal Reflective Petals
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作者 Sasa Pavlovic Velimir Stefanovic +1 位作者 Darko Vasiljevic Emina Petrovic 《Journal of Energy and Power Engineering》 2015年第8期714-720,共7页
In this paper, detailed optical of the solar parabolic dish concentrator is presented. The system has diameter D = 2,800 mm and focal length f = 1,400 mm. The efficient conversion of solar radiation in heat at these t... In this paper, detailed optical of the solar parabolic dish concentrator is presented. The system has diameter D = 2,800 mm and focal length f = 1,400 mm. The efficient conversion of solar radiation in heat at these temperature levels requires a use of concentrating solar collectors. In this paper, detailed optical design of the solar parabolic dish concentrator is presented. The parabolic dish of the solar system consists from 12 curvilinear trapezoidal reflective petals. This paper presents optical simulations of the parabolic solar concentrator unit using the ray-tracing software TracePro. The total flux on receiver and the distribution of irradiance for absorbed flux on center and periphery receiver are given. The total flux at the focal region is 4,031.3 W. The goal of this paper is to present optical design of a low-tech solar concentrator, that can be used as a potentially low-cost tool for laboratory-scale research on the medium-temperature thermal processes, cooling, industrial processes, solar cooking and polygeneration systems, etc. 展开更多
关键词 Solar parabolic dish concentrator optical analysis solar energy solar radiation.
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