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

它收集光数量取决于面积。

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下面合适位置，并迅速调整到了40倍。

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

它工作原理是这样：从远处接收入射光线。

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

从远处接收入射光线。

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大小；一来说，望远越大，解析率就越高。

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

然后会聚 光线，在望远内部形成一个真实翻。

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.

然后使用将压印电子束放大 40 倍，并使用一组投影仪头进一步放大 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。 体被放置 在焦点之外，因此光线再次 在另一侧形成翻实。

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.

伽利略目使用凹透，而标准折射望远和目都使用凸透。

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，您将得到一个关于和目焦距放大方程。

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.

投影仪头放大已经放大体，包括增加差， 然后第二次放大会增加自己差。

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，它们基本上有三组：聚光、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，（通常被认为是显微核心）将放大 40 倍，其光学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，就和目焦距而言，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——中心与实高度夹角。

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.

它由最靠近体一端和另一端目组成，它放大了产生。

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.

一个简单放大不足以在细胞尺度上研究体，因此我们开发了复合显微， 它望远一样， 使用和目来放大体。

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.

在射线中，您可以看到 第一个角度切线 theta 是真实 在焦距上高度。

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引入差，因为这最终限制了显微亚纳米级分辨率。

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， 即和一系列四个投影仪透，用于解析和放大印在电子束中微小， 宽度可达几厘米。