查询词典 concave lens

AE3000's memory enables the user to set the lens in a position for 2.35 widescreen Cinemascope viewing, and memorize that lens position.

AE3000提供镜头位置记忆，可以记住对于一个2.35：1屏幕，投射出2.35：1画面和16：9画面的镜头位置，之后，只要一键就可以在两种镜头设置之间切换。

The unsuspecting photographer focuses with the lens wide open to place the circle of least confusion at the sensor position b, and, taking the actual picture at a reduced aperture, he is unaware of the ensuing focus shift that prevents him from getting the best out of the lens.

一个经常使用全孔径来拍摄的摄影师会毫不犹豫地把胶片放在B点，但是如果他不改变胶片的位置，当他使用小光圈的时候，事实上，他就不可能充分利用这个镜头拍到最好的照片了。

We use only Nikon brand lenses to ensure consistent color balance and exposure accuracy from lens to lens.

我们只用尼康的镜头，确保每一个镜头有稳定的色彩平衡和精确的曝光。

Notice that this lens is actually different than the plano convex lens used in the original Galilean telescope, but still gives the same results.

请注意，这个镜头实际上是平凸比在原来的伽利略望远镜所使用的镜头不同，但仍给了相同的结果。

Using these molds, nano-dot-array with 200nm diameter, binary optical micro-lens array, refractive micro-lens array, cross micro-fluidic channel and cap for glucose test strips are fabricated by thermal nanoimprint process.

此外，针对纳米压印光刻在制备三维微结构方面的优势，采用热压印方法制备了二元光学微透镜阵列，折射微透镜阵列，微流体通道、血糖检测芯片封盖等。

Some telescopes do not use a lens at the front. They use a curved mirror at the back. A curved mirror is better than a lens in some ways.

一些望远镜的前部不用透镜，而在后面装上一个曲面镜，曲面镜在某些方面要比透镜好。

Referring to the function of cylindrical lens and the principles of holographic optical elements, we make this holographic element, which can achieve the optical function of cylindrical lens, and have the advantage of large-scale, short focal length and well-distributed light energy, in order to meet the requirements of laser direct writing synthetic holograms.

实验结合激光直写合成全息拍摄时所需柱面透镜的功能，参考全息光学元件的制作原理来制作图像柱面压缩全息光学元件，实现柱面透镜的光学功能，并使元件具有大面积、短焦距、会聚光均匀分布的特点，满足激光直写合成全息拍摄对图像的需求。

It has the effect of a system that consists of a cylindrical lens and a spherical lens.

给出了制作这两种元件的原理、方法、参数和相应的实验结果。

Of course, if the disk is right at the focal length of the objective lens, then the cylindrical lens does not affect the image and it is perfectly circular.

当然，如果正好处于物镜焦距位置，柱面镜就不会影响到光电探测器上的成像，因而会获得一个完美的圆性影像。

Compared with selffocusing cylindrical lens, selffocusing cone lens has its unique features.

自聚焦锥透镜与圆柱透镜相比较，有其特殊之处。

Strap him to the bed if you have to.

实在不行就把他绑在床上

The chairman has arrived-it's about time he put in an appearance at one of these functions .

董事长来了——该是他在这种盛大集会上露面的时候了。