Diy projector production course

2.diy projection

Diy projector old desktop computer diy projector

Methods/steps

1, first you have to find a useless mobile phone with a broken touch screen. But the inner screen had better not be broken. Only LCD screens are supported.

2. Find a board and press the hole on the screen of the mobile phone.

3. After cutting, cut the size of the periphery, preferably a rectangle.

4, spray paint, because it is afraid of light loss, it is best to spray black.

5. Stick the mobile phone on after the paint is dry. On the back of the LCD screen is a stainless steel cover with three layers of paper inside. Take those papers off. )

6. After the LCD screen is torn, it should be translucent in this state. It's like this after power-on.

7. Circuit board and light source

Then you can go to Taobao to buy Philippine mirrors and lenses.

Light leaking from the side should be sealed.

Then connect the computer for debugging.

Draw a circle. Drill the biggest hole with an electric drill.

Mount the lens on the board.

Philippines before package, Philippines after package.

Assemble the board, connect the power supply, and connect the power supply, and you're done.

What can I use my own simple projector instead of a magnifying glass?

A light bulb filled with water can replace a magnifying glass.

A projector, also known as a projector, is a device that can project images or videos onto a curtain. You can connect with computer, VCD, DVD, BD, game machine and DV through different interfaces to play corresponding video signals.

Classification:

1, home theater type;

2. Portable business projector;

3. Educational conference projector;

4. Mainstream engineering projectors;

5. Professional cinema projectors;

6. Measuring projector.

Magnifier is a convex lens used to enlarge objects, and the prototype of microscope. Usually used to observe the details of objects. Magnifier is a kind of convergent lens, and its focal length is much smaller than the apparent distance of the eyes.

Principle:

In order to see the tiny object or the details of the object clearly, it is necessary to move the object closer to the eye, which can increase the viewing angle and form a larger real image on the retina. But when the object is too close to the eye, it is not clear. In other words, to be good at observation, we should not only make the object have a large enough opening angle to the eyes, but also take a suitable distance. Obviously, for the eyes, these two requirements are mutually restrictive. If you put a convex lens in front of your eyes, this problem can be solved.

Why does the homemade projector not image?

To build a projector, the image should be between the focal length and twice the focal length from the center of the lens. At this time, an enlarged inverted real image can be obtained on the screen through the lens.

Turn on the electric light indoors at night, and put the magnifying glass for the projector lens in front of the cardboard. The distance from the electric light is about equal to the projection distance. Find out the distance between the magnifying glass and the cardboard when the electric lamp images on the cardboard, which is the approximate distance between the image and the lens of the magnifying glass when the projector is used. You can also turn up the brightness of the mobile phone, lay it flat on the darkroom floor at night, put it on with a magnifying glass, observe the projected image of the mobile phone screen on the ceiling, and find out the distance between the magnifying glass and the screen when it is clearest.

Of course, the brightness of the picture as a light source is too low, and it may be that the dark image cannot be seen clearly in a bright environment, especially when projecting objects.

What can Diy projector use instead of magnifying glass?

A light bulb filled with water can replace a magnifying glass.

A projector, also known as a projector, is a device that can project an image or video onto a curtain. You can connect with computer, VCD, DVD, BD, game machine and DV through different interfaces to play corresponding video signals.

Classification:

1, home theater type;

2. Portable business projector;

3. Educational conference projector;

4. Mainstream engineering projectors;

5. Professional cinema projectors;

6. Measuring projector.

Magnifier is a convex lens used to enlarge objects, and the prototype of microscope. Usually used to observe the details of objects. Magnifier is a kind of convergent lens, and its focal length is much smaller than the apparent distance of the eyes.

Principle:

In order to see the tiny object or the details of the object clearly, it is necessary to move the object closer to the eye, which can increase the viewing angle and form a larger real image on the retina. But when the object is too close to the eye, it is not clear. In other words, to be good at observation, we should not only make the object have a large enough opening angle to the eyes, but also take a suitable distance. Obviously, for the eyes, these two requirements are mutually restrictive. If you put a convex lens in front of your eyes, this problem can be solved.

How to make a simple projector?

First of all, all accessories should be prepared, including: a display screen (below 15 inch, generally 800X600 12 inch notebook LCD screen, the price is around 150. Of course, you'd better find a high-resolution screen. It's cool to watch HD. Pay attention to pseudo color, because you can't get the driver board), and replace the notebook LCD screen with a display kit (including: driver board screen cable, key board, VGA cable of power adapter, and the high-voltage board can be omitted). These can be supplied on the fourth floor of QQ Computer City, and the price is around 200 yuan. Pay attention to bring the LCD screen in the past, because you want to write the driver), a slide projector, two PCI card slot fans (sold on the third floor of QQ, 10 yuan, and you can also use ordinary chassis fans instead, but it is unsightly and shaded), double-sided adhesive tape, light-tight wide adhesive tape, and several 8 mm thick foam boards (wide adhesive tape is cut from paper, and foam boards are also used for advertising * *. From 200 Cixi goods to 15000 Sony screen, there is a lot of space. Of course, if you are not as demanding as I am, you can use a free screen.

These accessories add up to about 600 yuan, and I spent 630 yuan. I wouldn't be surprised if all the broadsword teams in the jar only deserve 500 yuan, hehe.

Next, the most important thing is to soak the screen and tear the film, cover the LCD screen with paper towels, soak it in pure water (I use the water purifier to filter the water in the white manhole, which is purely psychological, and I can also use tap water), then cover it with a fresh-keeping bag, and fold the bag mouth to avoid air leakage (the fresh-keeping film is ok, but personally I think the fresh-keeping bag is easier to operate), and then what should I do? Open the bag after ten hours (it must be ten hours, otherwise) and pick it from a corner with a toothpick. Personally, I suggest keeping the room quiet so as to enjoy the wonderful sound of the plane taking off and landing when tearing up the film. ...

The next thing is relatively simple, remember the manual labor class in primary school? Students, take out your scissors, tape measure, ruler and pen, and start class ... (pay attention to dealing with light leakage)

After the assembly, find a suitable place to put it at home, preferably fixed, because this thing is relatively large and a little heavy. If you touch it often, I guess you will lose interest in watching the big screen ... (Reminder, if the room where the projector is placed is not big, you must turn on the air conditioner, because the heat output of the 300W bulb is not covered in hot summer ...)

How to make your own projector with shoe box and magnifying glass

The projector works like this. 1, cut off the handle of the magnifying glass. 2. Cut off the top half of the plastic bucket, wrap the magnifying glass inside and fix it with hot melt adhesive.

3. Dig a hole slightly larger than the plastic bucket in the big shoe box, install the lens and fix them together with tape or glue. 4. According to the size of the mobile phone, we transformed the small shoe box into a mobile phone bracket. The box cover of the shoe box is just about to be used as the focusing tray below, and the bracket is fixed on the tray with adhesive tape.

Here, you can check the projection effect first, put a video on the mobile phone, and then buckle the mobile phone upside down on the bracket of the projector. 6. Change the focal length until the projected image is the clearest.

7. The effect of projection on the wall by DIY projector is OK, but the only drawback is that the picture is upside down. 8. Looking back is definitely uncomfortable. Finally, add a reflector to the projector and drag the bracket up by hand.

9, the final effect, ok!

How can a homemade projector be the clearest?

Many people may think that this kind of production must be very difficult. In fact, after understanding the principle of LCD projector, you may not think so.

Let's first understand the working principle of our common ordinary liquid crystal display (LCD): As shown in figure 1, LCD is mainly composed of a LCD screen (LCD screens used in LCD now are all TFT true color screens) and a backlight device. TFT LCD screen is composed of thousands of thin film transistors, which will produce different light transmittance under the action of external electric field.

TFT LCD displays images by this change of light transmission, and each thin film transistor is what we often call a "pixel". Of course, it is impossible for our eyes to know the image only by the LCD screen, because the LCD screen itself does not emit light, that is to say, a certain amount of light must pass through the LCD screen to show this light transmission change.

Therefore, every LCD must have a backlight device. In liquid crystal display (LCD), the backlight device consists of a plurality of U-shaped or S-shaped low-power energy-saving lamps and a light equalizing plate. After it emits uniform white light through the liquid crystal panel, we can clearly see the change of light transmission and obtain image information. From the above description, we can think that the LCD panel is essentially equivalent to a slide that can display moving images! In this case, if we let a uniform strong light pass through the LCD panel and then cooperate with a convex lens, according to the imaging principle of convex lens, we can get a clear real image somewhere outside the lens! The basic principle of LCD projector is so simple! So the simplest projector is to replace the slide projector with an LCD panel with the backlight removed! If the slide projector is troublesome, then the teaching projector shown in Figure 2 is perfect! Shanghai lawyer: sh.9ask