AVCCAM家族的新成员AG—HMC43近日在BIRTV新品发布会中亮相。除保留了AVCCAM以往产品的特质外，AG—HMC43采用1／4 FULL HD 3MOS感光元器件，小巧、轻量化设计（机身重量约1千克）、通过拆卸式手柄可根据用途不同而改变摄影风格、高画...AVCCAM家族的新成员AG—HMC43近日在BIRTV新品发布会中亮相。除保留了AVCCAM以往产品的特质外，AG—HMC43采用1／4 FULL HD 3MOS感光元器件，小巧、轻量化设计（机身重量约1千克）、通过拆卸式手柄可根据用途不同而改变摄影风格、高画质是其最大特点，高效先进的ACVHD（MPEG-4 AVC／H.264杞录格式保证了最大限度的高清画面质量，AVCHD直接将图像以及声音作为文件进行存储，所以不需要像以往那样对磁带进行繁杂的数字化作业，展开更多
Temperature sensitivity is greatly improved by taking the following three measures： proper long-period fiber grating （LPFG） whose strain coefficient of the core is larger than that of the cladding is employed, the ...Temperature sensitivity is greatly improved by taking the following three measures： proper long-period fiber grating （LPFG） whose strain coefficient of the core is larger than that of the cladding is employed, the LPFG is coated with a thin film of the material whose refractive index decreases with the temperature, and the sensor is encapsulated by metal material whose thermal expansion coefficient is large. By computer simulation, a measured temperature coefficient of 0.2375 nm/℃ and a temperature resolution less than 0.1 ℃ are obtained.展开更多
Panasonic公司的AG—HMC43摄像机高清存储卡式摄录一体机，采用1／4FULL HD 3MOS感光元器件。视频有效像素值约为2百万像素：小巧、轻量化的机身设计，重量约1kg：高画质。ACVHD（MPEG-4 AVC／H．264）记录格式，保证了最大限度的高清...Panasonic公司的AG—HMC43摄像机高清存储卡式摄录一体机，采用1／4FULL HD 3MOS感光元器件。视频有效像素值约为2百万像素：小巧、轻量化的机身设计，重量约1kg：高画质。ACVHD（MPEG-4 AVC／H．264）记录格式，保证了最大限度的高清画面质量；在专用高画质的PH模式下（24Mb／s），全像素采样（1920×1080）最长可以记录180分钟的高清视频;展开更多
The combination of fiber optics with nano-structure technologies and sensitive thin films offers great potential for the realization of novel sensor concepts. Miniatured optical fiber sensors with thin films as sensit...The combination of fiber optics with nano-structure technologies and sensitive thin films offers great potential for the realization of novel sensor concepts. Miniatured optical fiber sensors with thin films as sensitive elements could open new fields for optical fiber sensor applications. Thin films work as sensitive elements and transducer to get response and feedback from environments, in which optical fibers are employed to work as signal carrier. This article presents some research work conducted at the National Engineering Laboratory for Optical Fiber Sensing Technologies in recent years. Concrete examples are： Pd/WO3 co-sputtered coating as sensing material for optical hydrogen sensors shows robust mechanical stability and meanwhile good sensing performance; TbDyFe magnetostrictive coating directly deposited on fiber Bragg grating （FBG） demonstrates its possibility of miniature optical magnetic field/current sensors, and 40-pm shift of the FBG wavelength happens at a magnetic field order of 50 mT.展开更多
文摘AVCCAM家族的新成员AG—HMC43近日在BIRTV新品发布会中亮相。除保留了AVCCAM以往产品的特质外，AG—HMC43采用1／4 FULL HD 3MOS感光元器件，小巧、轻量化设计（机身重量约1千克）、通过拆卸式手柄可根据用途不同而改变摄影风格、高画质是其最大特点，高效先进的ACVHD（MPEG-4 AVC／H.264杞录格式保证了最大限度的高清画面质量，AVCHD直接将图像以及声音作为文件进行存储，所以不需要像以往那样对磁带进行繁杂的数字化作业，
基金the Innovation Project of Guangxi Graduate Education Foundation (No.2007106020809M70).
文摘Temperature sensitivity is greatly improved by taking the following three measures： proper long-period fiber grating （LPFG） whose strain coefficient of the core is larger than that of the cladding is employed, the LPFG is coated with a thin film of the material whose refractive index decreases with the temperature, and the sensor is encapsulated by metal material whose thermal expansion coefficient is large. By computer simulation, a measured temperature coefficient of 0.2375 nm/℃ and a temperature resolution less than 0.1 ℃ are obtained.
文摘Panasonic公司的AG—HMC43摄像机高清存储卡式摄录一体机，采用1／4FULL HD 3MOS感光元器件。视频有效像素值约为2百万像素：小巧、轻量化的机身设计，重量约1kg：高画质。ACVHD（MPEG-4 AVC／H．264）记录格式，保证了最大限度的高清画面质量；在专用高画质的PH模式下（24Mb／s），全像素采样（1920×1080）最长可以记录180分钟的高清视频;
基金This work is finically supported by the Project of National Science Foundation of China （NSFC） （Grant No. 50830203, 60908020）, Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry, and Program for New Century Excellent Talents in University （NCET- 10-0664）.
文摘The combination of fiber optics with nano-structure technologies and sensitive thin films offers great potential for the realization of novel sensor concepts. Miniatured optical fiber sensors with thin films as sensitive elements could open new fields for optical fiber sensor applications. Thin films work as sensitive elements and transducer to get response and feedback from environments, in which optical fibers are employed to work as signal carrier. This article presents some research work conducted at the National Engineering Laboratory for Optical Fiber Sensing Technologies in recent years. Concrete examples are： Pd/WO3 co-sputtered coating as sensing material for optical hydrogen sensors shows robust mechanical stability and meanwhile good sensing performance; TbDyFe magnetostrictive coating directly deposited on fiber Bragg grating （FBG） demonstrates its possibility of miniature optical magnetic field/current sensors, and 40-pm shift of the FBG wavelength happens at a magnetic field order of 50 mT.
