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The principle of secondary spectrum is introduced and the equations of designing apochromatism objective lens based on wave aberration are presented.

介绍了二级光谱的基,给出了波差法设计复消色差物的方程组。

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A physiotherapeutic apparatus for preventing and treating near sighted eye has a convex lens used as objective lens, lens cone, eyepiece, headgear and lens set.

一种防治近眼的疗器,它有作为物的凸筒、目,还有头套组,它用于人们在近距离上长时间用眼时戴在眼上,可以使被物的像清楚、放大变远。

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Crash Course Physics 速成课物理

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

收入射光线。

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

它的工作原理是这样的:物收入射光线。

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Crash Course Physics 速成课物理

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

然后物会聚 光线,在望内部形成一个真实的翻转图像。

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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焦距的放大方程。

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Crash Course Physics 速成课物理

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.

伽利略的使用凹透,而标准折射望的物使用凸透

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Crash Course Physics 速成课物理

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. .

在所有类似的项抵消之后,就物的焦距而言,您会得到 一个放大倍率方程。

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Crash Course Physics 速成课物理

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 在物焦点之外,因此光线再次 在另一侧形成翻转的实像。

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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.

原对角是肉眼的对角——物中心与实像高度的夹角。

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Crash Course Physics 速成课物理

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的物和另一端的组成,它放大了物产生的图像。

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Crash Course Physics 速成课物理

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 第一个角度的切线 theta 是真实图像 在物焦距上的高度。

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Many, like the Hubble Space Telescope, are reflecting telescopes, using mirrors as the objective lens so that they can have huge openings, taking in as much light as possible in order to best capture images of distant objects.

许多,如哈勃太空望是反射望, 使用子作为物, 这样它们就可以有巨大的开口,吸收尽可能多的光线, 以便最好地捕捉物体的图像。

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