Remember the school lessons of biology, on which we examined the iodized cells of onion in a microscope? How mysterious then seemed the penetration into this mysterious invisible world!
It turns out that each of us can doa real microscope from a webcam with your own hands. To do this, do not need special knowledge, just a few items that will be found in any home. At the same time, we will not spoil the webcam, it will be able to work just as it did before. So, we need:
• USB web camera;
• Scotch tape;
• scissors;
• the stand (the rod, fixed on the base vertically), capable of working as a tripod;
• a subject table on which we will lay out the objects of our future research;
• Backlight - any light source of sufficient brightness, you can use even a flashlight mobile phone.
So, let's begin!The first step is to turn the camera itself into a microscope. To do this, just unscrew its lens and insert it back, but the other side. It turns out a tremendous increase effect. It's good if the microscope camera is at least megapixel. You can take less, but the coefficient of increase, respectively, will also be smaller.
The next step is a tripod.The more stable it is, the easier it will be to configure the microscope from the webcam. It is better to choose for him a rigid rod, which must be strengthened on the edge of the base of sufficient size, with a side of about centimeters 20.
На штативе, на высоте около 10 см делаем a small table about the size of a pack of cigarettes. At its center, you need to make a hole for lighting from the bottom. For a table, thick cardboard is suitable, which can easily be fixed on a tripod with the help of a L-shaped corner and an adhesive tape. The corner can be taken ready or cut from a thin tin, for example a tin can.
It remains to be fixed on a tripod, in fact, itselfmicroscope from a webcam. Note that the lens should be free to approach the object only a few mm, so if the shape of the front part of the body does not allow this, then it must be removed. A webcam microscope is attached by analogy with the object table, but not to the tripod itself, but to a ballpoint pen or something similar. And after that, the handle is fixed on a tripod so that it is possible to move it up or down a couple of centimeters to adjust the focus. You can fasten a thin copper wire.
Наш микроскоп из веб-камеры почти готов.Now be sure to highlight the subject table below. If you do not find anything suitable, use a small mirror. Arrange it under the table at an angle so that it discards the bunny from the light source to the object table. The light source can be a desk lamp or a flashlight.
Теперь нужно сфокусировать камеру. Подключите ее.Place a sheet of paper on the sample table with the printed text and, by moving the webcam on our improvised slide, adjust the sharpness. Now you know the approximate focal length of the lens. Here is our new webcam. The microscope is ready to go.
Of course, the design is not ideal, and it is made in haste. If you get carried away, you will probably come up with an option much better than this. Successful to you experiments!
