International Conference on Precision Instruments and Optical Engineering最新文献_第5页

Comparative study on brightness and leakage ratio test methods of optical waveguide augmented reality glasses 光波导增强现实眼镜亮度和漏率测试方法的比较研究

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2667900

Fei Di, Yingying Xu, Chi Chen, Jinjun Wu

{"title":"Comparative study on brightness and leakage ratio test methods of optical waveguide augmented reality glasses","authors":"Fei Di, Yingying Xu, Chi Chen, Jinjun Wu","doi":"10.1117/12.2667900","DOIUrl":"https://doi.org/10.1117/12.2667900","url":null,"abstract":"Because the near eye display (NED) device mainly displays its imaging effect with a unique virtual image, in essence, compared with the traditional display device, the measurement requirements and methods of brightness, light leakage ratio and other related parameters have also changed. By analyzing the imaging characteristics of optical waveguide AR display equipment, a comparative test scheme for brightness and light leakage ratio is proposed. The same type of arrayed optical waveguide NED module is experimentally measured by using equipment with different test principles, and the measurement results are compared and analyzed. The research results show that the measurement results of the ordinary aiming point luminance meter are not the luminance values in the real display. For the measurement of a certain illumination degree of the equipment, the luminance value and light leakage measured by the aiming point luminance meter have lower deviation than that measured by the two-dimensional imaging luminance meter. Therefore, in the process of testing NED, it is necessary to correctly select the measuring instrument according to its imaging characteristics, the size of the area to be tested and the test scene.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127984284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis on wear principle and cutting performance of Sialon ceramic tool in high-speed cutting of superalloy Inconel 718 Sialon陶瓷刀具高速切削高温合金Inconel 718的磨损原理及切削性能分析

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2667903

Yang Zhang, Bo Wang

引用次数: 0

3D computational ghost imaging via binocular vision 基于双目视觉的三维计算鬼影成像

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2667766

Yunhe Zhang, Chen Chang, Huizu Lin, Shuai Sun, Wei-Tao Liu

引用次数: 0

Study on the trajectory measurement filter algorithm for an adaptive IMM aerial vehicle 自适应IMM飞行器弹道测量滤波算法研究

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2667886

Jian Li, Kewang Zheng, Kangning Zhao

引用次数: 0

Influence of the shutter opening area in the chimney trunk on the infrared stealth performance of the power exhaust device 烟囱筒内百叶窗开口面积对动力排气装置红外隐身性能的影响

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2667816

Shuai Zhang, Zhongwei Chen, Xiaobo Zhuansun, X. Ma, Jiazheng Ni

{"title":"Influence of the shutter opening area in the chimney trunk on the infrared stealth performance of the power exhaust device","authors":"Shuai Zhang, Zhongwei Chen, Xiaobo Zhuansun, X. Ma, Jiazheng Ni","doi":"10.1117/12.2667816","DOIUrl":"https://doi.org/10.1117/12.2667816","url":null,"abstract":"The role of the ship exhaust infrared suppression system is to control the infrared radiation of the ship exhaust system by reducing the temperature of the ship's chimney wall and exhaust smoke, thereby reducing the probability of the ship being detected by the infrared system. This paper studies the part of the chimney with shutters installed, and uses the fluid calculation software FLUENT to carry out numerical calculations. By simplifying the actual structure, the shutter flow field model is established. The exhaust temperature and infrared radiance of the ship's power system, as well as the structure and characteristics of the flow field, were simulated under the conditions of four different opening areas of the shutter. By analyzing the effect of the opening area of the shutter on the average temperature of the exhaust system, the variation law of the effect of the opening area of the shutter on the infrared radiation characteristics of the chimney is obtained. It is further found that when the opening area of the shutter is 0.6-0.65 of the side wall area, the infrared stealth performance of the ship's power exhaust will have a better effect.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124042374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Power stability control based on white laser 基于白光的功率稳定控制

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2668009

Lan Xiao, Jianjun Li, Tao Qi, Kunmeng Zhou, Jia-min Weng

{"title":"Power stability control based on white laser","authors":"Lan Xiao, Jianjun Li, Tao Qi, Kunmeng Zhou, Jia-min Weng","doi":"10.1117/12.2668009","DOIUrl":"https://doi.org/10.1117/12.2668009","url":null,"abstract":"Aiming at the stability control requirements of high stability solar simulation light source, a white laser power stability control method based on quartz is proposed. The quartz plate is connected and fixed with the scanlab, and the relationship between the Angle of the incident light and the transmittance is taken as the signal regulation principle. When the scanlab rotates the quartz slab, the light signal transmitted by the quartz slab is adjusted. Based on Fresnel's Law, the rotation Angle and transmittance parameters under different wavelength of incident light are analyzed. And the rotation Angle range of quartz is calculated, which provides the output parameter support for realizing the power stability of light source. PID algorithm is used to modulate the error of the signal of the monitoring detector and the voltage corresponding to reference power so as to accurately adjust the output of scanlab. The stabilizer is used to control the power of the white laser, and the Trap detector is used to verify the level of power stability. The experiment results of the stability of the laser after modulation is as follows: the standard deviation CV is 0.069%/55min and the peak-to-peak fluctuation SV is ±0.302%/55min. Compared with the free-running result, SV and CV are improved to 1/15.83 and 1/33.04 respectively, and the power stability of the white laser is enhanced, meeting the stability requirement of 99.6%.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131710064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Frequency stabilization of a distributed feedback diode laser by resonant feedback from a V-type passive resonator 利用v型无源谐振器谐振反馈实现分布式反馈二极管激光器的稳频

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2668323

Huilin Cao, Z. Tan, Shiyu Guan, Yunzheng Wang, Shirong Chen, Zeya Yang

引用次数: 1

Application of improved surface fitting algorithm in digital image correlation method on concrete blasting process 改进曲面拟合算法在数字图像相关方法中的应用

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2667867

Xinnan Cui, Jianming Wang, X. Yue, Chong Chen, Huaiyuan Wang, Yinjun Wang

{"title":"Application of improved surface fitting algorithm in digital image correlation method on concrete blasting process","authors":"Xinnan Cui, Jianming Wang, X. Yue, Chong Chen, Huaiyuan Wang, Yinjun Wang","doi":"10.1117/12.2667867","DOIUrl":"https://doi.org/10.1117/12.2667867","url":null,"abstract":"To further investigate the failure process of concrete in demolition blasting, the concrete blasting experiments were conducted. The digital image correlation (DIC) method was used to measure the full field surface deformation. In the DIC method, the surface fitting sub-pixel displacement algorithm has simple structure and high computational efficiency, however, the accuracy is poor. A new surface fitting algorithm based on moving least square method with a Gaussian basis function and a 3×3 fitting window was used and the accuracy was improved to 1/200 pixel. The blasting experiment results show that the failure of concrete is driven by blasting stress wave and gas. The action time is about 4.5 ms. The formation of crack is dominated by stress wave. The maximum velocity of crack propagation is 225.95 m/s, the average velocity is 122.27 m/s, and the time is about 1.75 ms. The gas mainly makes the crack to expand, and then divides the concrete. Under explosion loading, the concrete also shows a fracture process zone, and a strain concentration is formed at the crack tip. The length of the fracture process zone is 8~9 times of the maximum aggregate size.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124355660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Automatic temperature monitoring technology based on fiber grating sensor 基于光纤光栅传感器的温度自动监测技术

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2667908

Xinxiang Shao, Heng Zhu, Yutong Wang, Hong-Tao Jiang

{"title":"Automatic temperature monitoring technology based on fiber grating sensor","authors":"Xinxiang Shao, Heng Zhu, Yutong Wang, Hong-Tao Jiang","doi":"10.1117/12.2667908","DOIUrl":"https://doi.org/10.1117/12.2667908","url":null,"abstract":"At present, temperature sensors are relatively mature, and commercial sensors are mainly thermistors and thermocouples, which have the advantages of low cost and large temperature range. However, it is difficult to meet the requirements of some special occasions, such as strong electromagnetic interference, strong corrosiveness and other environments, and high-precision temperature measurement cannot be performed. Fiber Bragg grating is a kind of fiber optic sensor, which has the advantages of anti-electromagnetic interference resistance, corrosion resistance and high sensitivity. The fiber Bragg grating obtains sensing information by modulating the Bragg wavelength of the fiber through the change of the external temperature parameter, and can automatically monitor the temperature change of the object to be measured. In this paper, the temperature sensing test experiment of fiber Bragg grating is carried out. The results show that the center wavelength of the grating has a good linear response to the temperature of the object to be measured, and the temperature error is within ±0.5℃. temperature sensing.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126375553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and experiment of self-powered system for noise monitoring sensors of power equipment 电力设备噪声监测传感器自供电系统的设计与实验

International Conference on Precision Instruments and Optical Engineering Pub Date : 2023-02-27 DOI: 10.1117/12.2668019

Liying Zhu, Leilei Wang, Songyang Zhang, Qiang He, Kaimei Zhao, Lipeng Mi

{"title":"Design and experiment of self-powered system for noise monitoring sensors of power equipment","authors":"Liying Zhu, Leilei Wang, Songyang Zhang, Qiang He, Kaimei Zhao, Lipeng Mi","doi":"10.1117/12.2668019","DOIUrl":"https://doi.org/10.1117/12.2668019","url":null,"abstract":"Aiming to fulfill the need for noise monitoring of a power grid, a self-powered system was established in this study for noise monitoring sensors of power equipment. Specifically, the self-powered system is a wireless vibrational energy transduction and storage system that has low power consumption and does not require a power supply. It includes a transducer module, a circuit conditioning module, and an energy storage module. In particular, the piezoelectric sheet was designed based on the vibration characteristics of power equipment and a zinc oxide nanowire array was selected as the material of the transducer module, which converts vibrational power used by the power equipment into electrical energy. An LTC 3588-1 chip was adopted for the circuit conditioning module to rectify the electrical energy collected. Meanwhile, lithium batteries were employed for the energy storage module. Through preliminary experimental research, the system demonstrates good energy transduction and storage functions. Regarding the technical characteristics of this self-powered system, the respective installation and maintenance are convenient. Further, such vibrational energy harvesting technology uses the vibration of the power equipment itself as an energy source; thus, it has potential in applications in which obtaining light energy and replacing batteries are difficult.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126817187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0