光强度

The diffraction theory of Kirchhoff is applied to the four-pinhole aperture diffraction screens, the intensity, the zero-contour of the real and imaginary parts of complex amplitude and the phase distribution in deep Fresnel diffraction region are simulated, and it is found that the bright spots in interference field show central symmetry distribution. When the observation plane close to the diffraction screen, the zero-value points of light intensity can form line segment, on which the eccentricities of the light intensity isoline are close or equal to 1, the intensity changes very fast on both sides of the zero-line of light intensity.

利用基尔霍夫衍射理论计算了四圆孔径衍射屏在菲涅尔深区形成的的干涉光场的强度、零值线和相位的分布，发现干涉光场亮斑关于中心呈对称分布，在距离衍射屏较近的观察面上，光强值为的零点组成光强零值线段，该线段上光强等值线的离心率都接近或等于1，其两侧的光强值变化非常剧烈。

When the power was 40J/cm2, the situation was similar to that with 30J/cm2 but more severe.CONCLUSION:① the blue light intensity in 30J/cm2 and 40J/cm2 could both induce the acute retinal light injury,② AcrySof one piece IOL and other PMMA IOLhave no obvious effect no retina comparing to direct eradiation,③AcrySof Natural can weaken the injury of blue light to some extent.

30J/cm2与40J/cm2蓝光光照强度均可造成新鲜离体猪视网膜的急性光损伤；Acrysof一片与直接光照相比对视网膜的光损伤形态学没有明显改变：Acrysof Natural与Acrysof一片相比具有减弱光损伤的作用。

Results based on experiment and measurement data indicate that, when 244 nm argon ion laser emits 40 mW UV light, the curve of refractive index changes in single mode hydrogen loading fiber is exponential type (Ac=1.632×10-6 t 0.76912), exponential growth is obvious in the beginning, a very good linear region is following, and then refractive index increments reach saturated.

结果表明， 244 nm氩离子倍频激光器输出光功率为40 mW时，普通载氢光纤光致折射率变化量随曝光时间总体上呈现指数分布关系Ac=1.632×10-6 t 0.76912；在曝光时间较短时，造成的光栅强度较弱，光致折射率变化量有明显的指数增长趋势，之后是一段较好的线性区域，这时两个测量模型的结果得到了很好的印证，随着曝光时间的继续增加，光致折射率变化量达到饱和。

Electron donating substituent CH〓, OCH〓 and 4, 5-benzo make λ〓 red shift, electron with -drawing substituent F, Cl and CF〓 make λ〓 hypsochromic shift; b The W〓 is bigger than relative symmetrical carbocyanines, and the ratio of 0-1＇ and 0-0＇ transition intensity increase with the increase of σ〓; c The absorption and the fluorescence spectra are mirror image, and the λ〓 have a good linear relationship; d The Stokes shift △λ〓 and the Hammett σ〓 constant have a good linear relationship.

研究了染料的光物理性质，①苯环上取代基影响染料的λ〓和摩尔消光系数，相对于H，给电子取代基CH〓、OCH〓、4，5-benzo使λ〓红移，摩尔消光系数减小，吸电子取代基F、Cl、CF〓使λ〓蓝移，摩尔消光系数减小；②化合物吸收峰的半峰宽较相应的对称染料的大，且振动肩部与最大吸收峰的强度比随σ〓增大而增大；③吸收光谱与荧光光谱呈镜像关系，且λ〓与λ〓呈良好的线性关系；④化合物的Stokes位移△λ〓与取代基的Hammett σ〓常数呈线性关系。

The results showed that the light saturation point of potato leaf was about 1400 μmoll(m^2s) and its light compensation point was about 50 μmoll(m^2s), the stomatic conductance and the transpiration rate increased while the intercellular CO2 concentration reduced with the increasing of light intensity between the light compensation point and light saturation point.

试验结果表明：马铃薯叶片光合作用的光饱和点约为1400 μmol/(m^2s)，光补偿点约为50μmol/(m^2s)。在光饱和点和光补偿点之间，随著光合强度的增加，叶片的气孔导度和蒸腾速率升高，胞间CO2浓度降低；随著CO2浓度的增加，光合速率升高，其CO2的饱和点约为2000μmol/mol。

The light filter device that works regardless of the light spectrum, and will reduce the light according to certain ratio to obtain suitable amount of light.

不管波长为何，为了以一定的比率减弱光的强度以得到适当的光量所使用的滤光器，是一种不会改变光束的大小，但可以减少光量的滤光器。

The light filter device that works regardless of the light spectrum, and will reduce the light according to certain ratio to obtain suitable amount of light. It does not change the size of the light beam, but to decrease the quantity of light.

不管波长为何，为了以一定的比率减弱光的强度以得到适当的光量所使用的滤光器，是一种不会改变光束的大小，但可以减少光量的滤光器。

The longer the lowlight and the lower the low-light intensity the longer the induction period required.Howeverthe shoot could keep its induction state during non-consecutive lightflecks unless lightfleckswere separated by a long low light period.

猝发性辐射强度越大，所需光诱导时间越长；低光期越长，低光期辐射越小，所需光诱导期越长；但只要光斑间隔不是太长，针叶仍可保持原有的光诱导状态。

It shows that the field entropy is oscillating, which is the result of the correlation property between the atom and field. With the increase of the initial field intensity, which is the initial mean photon number the oscillation becomes irregularly and the amplitude decreases. The atom and the field couples tighter, and the disorder parameter decreases.

结果表明，场熵的演化是振荡的，这源于光场与原子之间关联的振荡性；随着初始光场强度的增大，光场的振荡变得不规则，振荡幅度明显减小，这是因为光场与原子之间的耦合越来越强，系统的无序度降低，而双模光场使系统的场熵演化周期性减弱，场熵的均值增大。

Considering the contributions due to viewed cone centred on the object point and extending through the luminnor body, the distribution of intensity in the image plane can be expressed by the integration of emitted powers of luminor body over the entire sightline under the paraxial approximation.

考虑到成像光锥的贡献，在近轴近似下，得到了用发光体的辐射强度表示像平面上照度分布的积分表达式，由此得到下列结果：1沿光路上每一垂直于光路的平面上能量贡献是一样的。2由于光路积分，探测器测到的光强涨落的幅度小于实际的涨落幅度，但在一定的条件下，发光体的涨落图像可重现。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。