The amount of light it collects depends on the area of the objective.

它光数量取决于物镜面积。

I snapped the first slide into place under the microscope and adjusted it quickly to the 40X objective.

我啪一声把第一张玻璃片放到了显微镜下面合适位置，并迅速调整到了40倍物镜。

Here’s how it works: The objective lens takes incoming light rays from a distant source.

它工作原理是这样：物镜从远处接入射光线。

The objective lens takes incoming light rays from a distant source. .

物镜从远处接入射光线。

The resolution depends in part on the size of the objective; in general the bigger the telescope objective, the better your resolution is.

解析度部分取决于接物镜大小；一来说，望远镜物镜越大，解析率就越高。

The objective lens then converges the light rays to form a real, flipped image inside the telescope.

然后物镜会聚 光线，在望远镜内部一个真实转图像。

The imprinted beam of electrons is then magnified 40 times using an objective lens and further magnified 50,000 times using a set of projector lenses.

然后使用物镜将压印电子束放大 40 倍，并使用一组投影仪镜头进一步放大 50,000 倍。

The object is placed just beyond the focal point of the objective lens, so light rays again form a flipped real image on the other side.

多。 物体被放置 在物镜焦点之外，因此光线再次 在另一侧转实像。

While Galileo used a concave lens for his eyepiece, the standard refracting telescope uses a convex, converging lens for both the objective lens and the eyepiece.

伽利略目镜使用凹透镜，而标准折射望远镜物镜和目镜都使用凸透镜。

After all of the like terms cancel out, you’re left with a magnification equation in terms of the focal lengths of the objective lens and the eyepiece.

在抵消所有类似项后，您将得到一个关于物镜和目镜焦距放大方程。

The projector lenses magnify what has already been magnified by the objective lens, including the added aberrations, and this second magnification adds its own aberrations afterwards.

投影仪镜头放大物镜已经放大物体，包括增加像差， 然后第二次放大会增加自己像差。

Now that we have a beam of electrons, we'll explore the magnetic lenses of which there are essentially three sets: the condenser, the objective, and the projector.

现在我们有了一束电子，我们将探索磁性透镜，它们基本上有三组：聚光镜、物镜和投影仪。

First the objective lens – often considered the heart of the microscope – magnifies the image by 40 times and its optical aberrations define the final resolution.

首先，物镜（通常被认为是显微镜核心）将图像放大 40 倍，其光学像差决定了最终分辨率。

After all of the like terms cancel out, you're left with a magnification equation in terms of the focal lengths of the objective lens and the eyepiece. .

在所有类似项抵消之后，就物镜和目镜焦距而言，您会得到 一个放大倍率方程。

The original subtended angle is the subtended angle of the unaided eye – the angle between the center of the objective lens and the height of the real image.

原对角是肉眼对角——物镜中心与实像高度夹角。

It consisted of an objective lens on the end closest to the object and an eyepiece at the other end, which magnified the image produced by the objective lens.

它由最靠近物体一端物镜和另一端目镜组，它放大了物镜产生图像。

A simple magnifier isn’t enough to study objects on the cellular scale, so we’ve developed compound microscopes, which like a telescope, use objective lenses and eyepieces to magnify objects.

一个简单放大镜不足以在细胞尺度上研究物体，因此我们开发了复合显微镜， 它像望远镜一样， 使用物镜和目镜来放大物体。

And in a ray diagram, you can see that the tangent of the first angle, theta, is the height of the real image over the focal length of the objective lens.

在射线图中，您可以看到 第一个角度切线 theta 是真实图像 在物镜焦距上高度。

Therefore, a considerable amount of science and engineering is dedicated to reducing the aberrations introduced by the objective lens, as that is what ultimately limits the sub-nanometer scale resolution of the microscope.

因此， 大量科学和工程致力于减少物镜引入像差，因为这最终限制了显微镜亚纳米级分辨率。

The next lenses, the objective and a series of four projector lenses, are used to resolve and magnify the miniscule image imprinted into the electron beam up to a width of a few centimeters.

接下来透镜， 即物镜和一系列四个投影仪透镜，用于解析和放大印在电子束中微小图像， 宽度可达几厘米。