Others began considering the virtues of a concave paraboloidal mirror as primary receptor: it had been known since Antiquity that such a mirror would bring parallel incident rays to a focus at one point.

其他人開始考慮的美德成人免费在线观看网址视频，凹拋物面反射鏡作為主要受體：它已被稱為自古以來這樣的一面鏡子日韩草逼精品毛片，會帶來平行事件射線的焦點(diǎn)在1點(diǎn)www.色一区二区。

In summer, because the vertical incident solar rays regionmoves by the equator to the north, causes of southeast trade crossingthe line the southern hemisphere to change the southwest monsoon toinvade Northern Hemisphere, meets one another with the originalNorthern Hemisphere's Northeast Tradewind, compels crowds this airrise, the increase convection current, again because the southwestmonsoon and the Northeast Tradewind direction is different, meets oneanother often creates the undulation and the whirlpool.

在夏季高清无码aaaaa特级黄色视频免费看视频，因?yàn)樘栔鄙鋮^(qū)域由赤道向北移，致使南半球之東南信風(fēng)越過赤道轉(zhuǎn)向成西南季風(fēng)侵入北半球黄色a片视频中文字幕在线观看一级，和原來北半球的東北信風(fēng)相遇日韩免费小视频，更迫擠此空氣上升，增加對流作用最新91地址永久入口，再因西南季風(fēng)和東北信風(fēng)方向不同做国产在线播放，相遇時常造成波動和旋渦。

In a thin spherical lens, not all rays from infinity--incident parallel to the optical axis--are united at one point.

在一個薄球面透鏡九九视频精品在这这里，并不是所有的射線無限-突發(fā)事件平行光軸-是美國在1點(diǎn)女人被添全过程A片。

Luneberg lens is a spherical lens which its permittivity varies with normalized radial coordinates. It is fabricated by using different homogeneous dielectric centrically layered media. The lens can focus a parallel beam of rays from any direction exactly at a point on the surface. If it is made by adding a reflecting surface "metallic cap", it is called Luneberg lens reflector. It can reflect incident wave into plane wave in incoming direction. It is usually applied in antenna, radar reflector,satellite-based, and mobile-communucation.

龍伯球透鏡為一種介電系數(shù)與半徑成一固定比例的球形透鏡，大部分是由數(shù)層不同介電系數(shù)介電質(zhì)組合而成久久这里有精品，而其主要特性能夠把入射波聚焦到球表面一點(diǎn)538在线无毒播放，假使在透鏡表面處鍍上一圓錐角金屬層即為龍伯球透鏡反射器，能把入射波依平面波的型態(tài)反射回原入射端免费看国产曰批40分钟视频，通常用於天線A片黄色视频免费、雷達(dá)、衛(wèi)星通訊www.久久,com、軍事等方面不卡免费A片观看在线播放。

Finally, Jones vectors for the electric fields of the incident and refracted rays are obtained.

最終給出了入射光和折射光電場矢量的瓊斯矢量形式。

The ray from the plasma lamp will go through into the light pipe with little incident angle after reflection by the reflector, and then the total reflection of the ray will occur among the prismatic reflecting films. Some ray may come to the end mirror and will be reflected back, and only a little of rays pass through the prismatic reflecting films, most of the rays will go forward by the action of the bottom light extracting surface and go out to be lighting.

等離子燈球發(fā)出的光線經(jīng)過反射器反射后在线69，以很小的入射角進(jìn)入到導(dǎo)光管禁止理伦18，光線在棱鏡反光膜管子內(nèi)進(jìn)行全反射，到達(dá)丙烯酸樹脂管端底鏡面的光線国产欧美十八禁，再反射回到管子內(nèi)部欧美一区黄片视频，只有少量的光線透過棱鏡反光膜出來，最終大部分光線通過管子底部的光線提取面引出管外国产真实偷乱视频老人，傳送到所需要照明的寬廣區(qū)域（見圖7）日韩国产欧美精品。

The invention comprises a free-form surface prism with three optical surfaces, and a micro-image display; the free-form surface prism is made of plastic glass materials with the refractive index greater than 1; the three free-form optical surfaces are concave surfaces, which meet one of the three surface-type equations, and the location relationship of each surface meets three condition equations; the incident angle formed between the widest-field upper edge rays emitted by an LCD and the second free-form surface meets the total reflection conditions; and an image source element is an LCD of 0.61 or 0.59 inches.

本發(fā)明包含一個具有三個光學(xué)表面的自由曲面棱鏡和一個微型圖像顯示器，自由曲面棱鏡采用折射率大于1的塑料玻璃材料www.美女中文字网络，自由曲面棱鏡的三個自由曲面光學(xué)表面均為凹形面精品日韩手机版视频在线观看，它們應(yīng)滿足三個面型方程之一，并且各表面的位置關(guān)系應(yīng)滿足三個條件方程人人揉人人操人人爽，由LCD發(fā)出的最大視場上邊緣光線在第二自由曲面上的入射角應(yīng)滿足全反射條件毛片网址视频在线观看，像源元件為0.61或0.59英寸的LCD。

Based on Fermat's principle and light path function, it gets the spectral distribution of the incident rays, and it can get the ray tracing map through a matrix method.

在費(fèi)馬原理的基礎(chǔ)上利用光程函數(shù)法得到入射光通過光柵后的光譜分布情況75性交欧美色色，再使用傳輸矩陣的計算方法構(gòu)造出光譜的點(diǎn)列圖欧美亚洲另类在线一区二区。