- 更多网络例句与焦点半径相关的网络例句 [注：此内容来源于网络，仅供参考]
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It's M2 factor is approaching the ideal value 1 and the beam intensity profile remains Gauss Profile. Laser beam with good propagation and focus characters. The beam can propagate a long way and can be focused with lens with long focal distance. The focal beam waist radius is 134μm, the focal distanced of the focus lens is 300mm. It's focal depth is about 5mm and the focal shift is about 1mm in the range of processing (3m).
结果表明，Slab CO2激光器具有高光束质量，其M2因子非常接近1的理想值；激光束具有良好的传输和聚焦性能，可以长距离传输；使用焦距为300mm的聚焦镜聚焦，聚焦光斑的束腰半径约为134μm，光束横截面能量分布接近理想的高斯分布，焦深约为5mm，在加工范围内(3m)，激光束的焦点漂移量大约为1mm。
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The result indicates that the output power oscillates and weakens along with increasing input power,and its oscillation period depends on the distance between the medium and beam focal point.Limiter′s limiting ability will decrease if waist size of the incident Gaussian beam and the aperture size increase.With a fixed input power scope,medium′s best limiting position will move towards the focal point if waist size of Gaussian beam and the aperture size increase,but the best limiting position will change a lot with different input power scopes.
结果表明：限幅器的出射功率随入射功率的增加衰减振荡，其振荡周期取决于介质相对于光束焦点的位置；限幅器的限幅能力随入射光束腰半径和光阑孔径的变大而减弱；入射功率范围固定，入射光束腰半径和光阑孔径增大时，介质的最佳限幅位置向入射光束的焦点靠近，但是在某些入射功率范围内会存在多个最佳限幅位置；光限幅器的箝位输出功率随光阑线性透过率的增加存在线性增加和非线性增加两个不同区域，实际应用中应在线性增加区域确定光阑孔径的大小。
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According to the obtained characteristics of focal points and principal planes, using the expressions of focal point, focal plane, focal length, principal point, and principal plane of geodesic lenses, the geometry graphic imaging formation principles of geodesic lenses are developed to get the object-image-relation of geodesic lenses .
利用短程透镜焦点、焦平面、焦距、主点、主平面等的表达式，根据短程透镜在大口径范围内理想聚焦，主平面为以焦点为圆心、以焦距为半径、在原点相切的两个圆弧等性质，推导出了短程透镜物像关系的作图法求取原则。
- 更多网络解释与焦点半径相关的网络解释 [注：此内容来源于网络，仅供参考]
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Airy：艾里
其余光环的亮度随着半径的增大而 迅速减弱. 计算与试验还表明,孔径越小,光行进的行程越长,衍射现象越明显. 经过镜头孔径的光线也会由于衍射使焦点处的光斑呈环状,其中心光斑[又称"艾 里(Airy)斑"]的半径可由以下公式算出:
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focal radius：焦半径
focal point 焦点 | focal radius 焦半径 | focal region 聚焦区
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focal radius：焦点半径
focal proliferation 局灶性增殖 | focal radius 焦点半径 | focal ratio 焦比
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photorefractive keratectomy：准分子激光屈光性角膜切削术
PRK(准分子激光角膜切削术)全称是准分子激光屈光性角膜切削术(Photorefractive Keratectomy)是指应用准分子激光在角膜前弹力层和浅层基质进行激光切削,使角膜前表面曲率减少、曲率半径增加,屈光力减低,焦点向后移至视网膜上达到矫正屈光不正的效果,