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- Usually, a large aperture lens will give better results. 若使用大光圈的镜头,效果当然更理想。
- Based on Collins formula and ABCD propagation matrix theory,the propagations of laser beams with different profiles through an aperture lens are analyzed and compared under the same laser beam power and initial beam width in this paper. 基于柯林斯公式和ABCD传输矩阵理论 ,在相同激光功率和初始束宽下 ,研究了不同空间分布光束通过聚焦光学系统的传输特性。
- Abstract: From the Helmholtz equation, the optical field analytical expression of an ultrashort pulse propagating through a small aperture lens was acquired with chromatic and spherical aberration. 摘 要: 从亥姆霍兹方程出发,考虑透镜的色差和球差,得到了超短脉冲经过小数值口径透镜后光场的解析表达式;
- From the Helmholtz equation, the optical field analytical expression of an ultrashort pulse propagating through a small aperture lens was acquired with chromatic and spherical aberration. 摘要从亥姆霍兹方程出发,考虑透镜的色差和球差,得到了超短脉冲经过小数值口径透镜后光场的解析表达式;
- From the propagation theory of partially coherent light, spectral anomalies and spectral switches of Gaussian Schell-model beams focused by an astigmatic aperture lens are studied. 从部分相干光的传输理论出发,研究了高斯谢尔模型光束通过光阑像散透镜聚焦的光谱异变和光谱开关。
- short focal length high aperture lens 短焦距强光力物镜
- Extended Field Elliptical Aperture Lens 可扩展扫描椭圆孔镜头
- Observant photographers have noticed that not all lenses are created equal: large aperture lenses show strong out-of-focus effects while small-aperture lenses lead simply to a softening of the image. 细心的摄影者会发现不是所有的镜头都是一样的:大光圈的镜头呈现强烈的失焦效果,而小光圈的镜头只是稍微的让图像柔化一些。
- Set to the desired lens aperture. 设置所需的镜头光圈。
- Focal shifts of flattened Gaussian beams passing through an aperture lens 平顶高斯光束通过光阑透镜的焦移
- Propagation of laser beam with different profiles through an aperture lens 不同空间分布光束通过聚焦光学系统传输特性的比较
- This lens can magnify 20 diameter. 这个透镜能放大20倍。
- The aperture in the door is so wide. 门上的孔隙太大了。
- He stopped down the lens to a small aperture. 他把镜头光圈孔径缩小。
- Some adjustment of the lens may be necessary. 可能有必要调节一下镜头。
- Do you have soft contact lens care product? 有没有软性隐型眼镜保养用品?
- We saw light through a small aperture in the wall. 我们透过墙上的小孔看到了亮光。
- He uses lens to make things appear clearer. 他用镜片以便看东西更清楚些。
- The lens is often used to make telescopes. 镜片常被用来做成望远镜。
- Don't smear the lens; I've just polished it. 别把镜头弄脏了,我刚刚擦过。
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