光栅

An implicit linear model for the projection system is advanced based on analyzing and researching toward the pin-hole imaging theory and the characteristics of coded structured light methods.

主要研究内容和成果如下：(1)在对小孔成像模型和编码结构光法特点的分析与研究的基础上，提出了投影仪的一种线性隐式模型，建立了光栅投影三维测量系统完整的数学模型。

This invention discloses a adjustable long-cycle light fiber grating which is not sensitive to the polarization and belongs to photon technique field.

本发明公开了一种对偏振不敏感的可调长周期光纤光栅，属光子技术领域。

This invention discloses a adjustable long-cycle light fiber grating which is not sensitive to the polarization and belongs to photon technique field.

要約 本发明公开了一种对偏振不敏感的可调长周期光纤光栅，属光子技术领域。

In view of the lack of effective methods for the measurement of internal force under the construction loads and the long-term monitoring in service of steel tie rods, a novel high-durable smart steel tie rod based on the fiber Bragg grating absolute measuring technology and packaged by glass fiber reinforced plastic was developed.

针对目前钢拉杆构件缺少施工荷载下的内力测试和服役期间的长期监测手段问题，采用玻璃钢封装技术研制开发出一种新型的基于光纤光栅绝对测量传感技术的高耐久性智能钢拉杆。

The headstock horizontal travel "Y" and the RAM travel "Z" are both driven through a precision ball screw with direct measuring provided by Heidenhain glass scale.

主轴箱水平移动 Y 轴方向和滑枕的 Z 轴方向移动是通过精密的滚珠丝杠驱动，并带有海登汉直接测量光栅尺。

Metal-coated long-period fiber gratings can be used to change the resonance wavelength.

金属包层长周期光纤光栅可用于对谐振波长的调谐。

The metal-coated FBGs are obtained by combining the technology of electroless plating nickel and electroplating tin.

通过实验分析了影响金属涂覆层质量的因素，得出了制作金属化封装光纤Bragg光栅的最佳工艺条件。

The resolution of this device could reach to 10〓MPa, which is suitable to real applications. The characteristics of a tunable filter based on metal-coated LPFG were investigated.

根据长周期光纤光栅的弯曲特性，结合应变膜片的原理，设计了用于气体、液体压力传感的光纤传感器，可以获得0.1KPa的压强测量分辨率。

The theoretical method presented here can be employed to forecast the shift of the resonance wavelength, and to help the design and fabrication of the metal-coated LPFG.

标 签 导波与光纤光学长周期光纤光栅金属包层光纤三层介质光纤包层模 guided wave and fiber optics long-period fiber grating metal-coated fiber three-layered optical fiber cladding modes

The traditional measurement methods such as stereoscopic law, Molls stripe law, grating cubic chart law and so on need expensive equipment and well-trained special technical staff, and they have long measurement cycle and low measurement efficiency. These shortcomings make the traditional contact measurement method hinder its wide application.

传统的自由曲面主要采用接触式测量方法，如体视法、莫尔条纹法、光栅立体图法等，这些方法需要昂贵的仪器设备和训练有素的专门技术人员，而且测量周期长、效率低，这些缺点使得传统的接触式测量方法的发展受到了限制。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。