Experimental teaching content of <i>Laser Principle and Its Application</i> is proposed to improve from experimental teaching devices and experimental guide book. At first, a experimental system of laser-diode-pumped solid-state laser is designed and manufactured. Separate optical components are adopted in the designed experimental system and students can put these optical components on every place and their ability to establish and adjust optical path can be enhanced. Moreover, experimental education outline of <i>Laser Principle and Its Application</i> is revised and improved. At last, experimental guide book for the designed and manufactured experimental device is written. The experimental teaching innovation will improve experimental teaching effect and quality of <i>Laser Principle and Its Application</i>.
With the development of electronic information, computer and network, modern education technology has entered new era, which would give a great impact on teaching process. Spectroscopy and spectral analysis is an elective course for Optoelectronic Information Science and engineering. The teaching objective of this course is to master the basic concepts and principles of spectroscopy, spectral analysis and testing of basic technical means. Then, let the students learn the principle and technology of the spectrum to study the structure and state of the material and the developing process of the technology. MATLAB (matrix laboratory) is a multi-paradigm numerical computing environment and fourth-generation programming language. A proprietary programming language developed by MathWorks, MATLAB allows matrix manipulations, plotting of functions and data, Based on the teaching practice, this paper summarizes the new situation of applying Matlab to the teaching of spectroscopy. This would be suitable for most of the current school multimedia assisted teaching
After the studying of many theoretical courses, it’s important and urgent for the students from specialty of optoelectronic information science and engineering to cultivate their comprehensive ability of photoelectricity. We set up a comprehensive practice course named “Integrated Design of Optoelectronic Information System” (IDOIS) for the purpose that students can integrate their knowledge of optics, electronics and computer programming to design, install and debug an optoelectronic system with independent functions. Eight years of practice shows that this practice course can train students' ability of analysis, design/development and debugging of photoelectric system, improve their ability in document retrieval, design proposal and summary report writing, teamwork, innovation consciousness and skill.
Aiming at uncontrollable long-term spot shift problem, a LED system for measuring tiny angle is designed based on optical auto-collimation principle in this paper. The measuring system transforms the angle variation into the change of spot position on CCD (Charge coupled device) and locates the spot by using multiple-circle fitting method. The system is calibrated by use of photoelectrical autocollimator and actual angle variation is determined according to the calibration value. In the system, two kinds of optical source, LED (Light-emitting diode) and LD (Laser diode), are used. A contrast experiment of stability of the two light sources is carried out. Experimental results show that the proposed measuring system has small spot shift, higher stability and precision.
In order to meet requirements of the image acquisition system with high-speed, multi-channel, scalable, low power
consumption and small volume in industry, military, aviation, and so on, a high-speed embedded image acquisition
system based on PC/104-Plus is designed in this paper, it combined versatility and scalability of PC with compact, small
size and light weight of the embedded systems. Embedded PC/104-Plus computer is used as the master-control unit,
through different IEEE-1394 high-speed serial buses, images sent by different CCD cameras are accepted and processed
by the master-control. The result shows that this system is high-speed, credible and stable.
Visual principle point is a key photogrammetry parameter while the position change of it can only indirectly be estimated
by the inverse calculation of the ground control point presently. To get the exact position change of the visual principle
point an on-orbit monitoring system of three-line array camera is proposed. The system is composed of light source part
and photoelectric detecting part that move along with the lens and the line array CCD respectively. The position change
of the visual principle point can be derived by the position change of the two light spots. This system will not change the
structure of the camera and influence the function of it. Experimental system is built up and ground test results prove the
feasibility of the monitoring system and show the accuracy of it is better than 1<sup>μm</sup>.
Sub-pixel interpolation technique is a way that getting sub-pixel gray value by interpolation algorithm and then it is
substituted into the correlation expression to calculate the sub-pixel position. It is a key way to improve the displacement
measurement accuracy in Digital Speckle Correlation Method (DSCM), meanwhile, it is more time consuming than
other steps. A new quarter sub-pixel registration method is proposed which can significantly cut down the sub-pixel
searching time. On the premise of not reducing accuracy, an improved Taylor's series expansion in gradient algorithm is
used to get higher registration speed. At the same time, a new cubic convolution interpolation method is proposed to get
extremely high accuracy. These conclusions are proved by the results of the experimental system.