The optical design of a semi-spherical screen fish-eye objective with field angle 180 degrees has been studied.
本文讨论了视场等于180度的球幕鱼眼镜头的光学设计问题。
Especially, analyze qualitatively the effect that the cathode magnetic field Angle contributes to beam ratio and prove it by calculation.
特别的是，文章中定性分析了阴极磁场角对电子注速度比的影响，并通过计算获得证明。
Based on the theory of photometry, measuring image sensors uniformity of the CCD image-forming system with large-field Angle is researched.
以光度学为理论基础，研究了大视场CCD成像系统像面均匀性测试技术。
From frequency field Angle the phenomenon of signal distortion is analyzed, and the principle of observing and measuring the micro-distortion of signal by using spectrum analyzer is explored.
从频域角度分析了信号失真现象，并探讨了频谱分析仪观测微小失真度的原理及若干问题。
From frequency field Angle the phenomenon of signal distortion is analyzed, and the principle of observing and measuring the micro-distortion of signal by using spectrum analyzer is explored.
从频域角度分析了信号失真现象，并探讨了频谱分析仪观测微小失真度的原理及若干问题。
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