diy projector making tutorial

2. diy projection

diy projector Old desktop computer diy projector

Methods/steps

1. First you need to find a useless cell phone that can have a bad touch screen. But the inner screen is best not bad. Only support LCD screen oh.

2, find a piece of wood board, press the phone screen to open the hole.

3, cut the periphery of the size of the cut, the best is rectangular.

4, spray paint, because the interior is afraid of light loss spray black best.

5, wait for the paint to dry and then stick the phone on. (The back of the LCD screen is a stainless steel cover with 3 layers of paper inside. To remove those papers.)

6, after the LCD screen is torn open, to this state translucent put. After the power is on, it is like this.

7, the board and the light source

Then you can go to Taobao to buy the Philips mirror and lens

Next to the leakage of light to be sealed

And then connected to the computer debugging

Draw a good circle. Use a drill to turn the largest hole.

Install the lens on the board

Install the front and back of the Philadelphia

Assemble the board and connect the power supply to connect the power supply is completed.

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

Light bulbs, filled with water can replace the magnifying glass.

The projector, also known as the projector, is a device that can project an image or video onto a curtain, and can be connected to a computer, VCD, DVD, BD, game consoles, DV, and so on through different interfaces to play the corresponding video signal.

Classification:

1, home theater type;

2, portable business-type projector;

3, education and conference-type projector;

4, the mainstream engineering-type projector;

5, the professional theater-type projector;

6, the measurement of the projector.

The magnifying glass is a convex lens used to magnify objects, the prototype of the microscope. Usually used to observe the details of an object. Magnifying lenses are converging lenses with a focal length much smaller than the visual distance of the eye.

Principle:

In order to see tiny objects or details of objects clearly, you need to move the object closer to the eye, so that the angle of view can be increased, so that a larger solid image is formed on the retina. However, when the object is too close to the eye, it cannot be seen clearly. In other words, in order to see clearly, not only should the object have a large enough angle of view to the eye, but it should also be at the right distance. Obviously for the eyes, these two requirements are mutual constraints, if the eyes in front of the configuration of a convex lens will be able to solve this problem.

Homemade projector how not to image

Build a projector, the image should be in the distance from the center of the lens is greater than the focal length to two times the focal length between, at this point, through the lens in order to get a magnified inverted solid image on the screen.

At night, an electric light indoors, in the distance from the electric light is about equal to the projection distance ready to use the projector, with a magnifying glass ready to build the projector lens on a cardboard, to find out the electric light in the cardboard image, the magnifying glass and the distance between the cardboard, which is to make a projector, the image and the magnifying glass lens between the approximate distance, the distance can be in the evening to turn on the cell phone brightness and flat on the ground in the dark room, with a magnifying glass placed above it, which is to make the projector, the image and the magnifying glass lens between the approximate distance, this distance can be in the dark room at night will be turned on the cell phone brightness flat on the ground This distance can also be used at night to turn up the brightness of the phone flat on the darkroom floor, with a magnifying glass above it, observe the projection of the image of the cell phone screen on the ceiling, to find out the most clear distance between the magnifying glass and the screen, as a reference for the production.

Of course, if the brightness of the screen as a light source is too low, it is possible to not be able to see the darker image clearly in a brighter environment, especially when projecting objects.

diy projection What can be used instead of a magnifying glass for a homemade simple projector?

A light bulb, filled with water, can be used instead of a magnifying glass.

The projector, also known as the projector, is a device that can project an image or video onto a curtain, which can be connected to a computer, VCD, DVD, BD, game consoles, DV, etc. to play the corresponding video signal through different interfaces.

Classification:

1, home theater type;

2, portable business-type projector;

3, education and conference-type projector;

4, the mainstream engineering-type projector;

5, the professional theater-type projector;

6, the measurement of the projector.

The magnifying glass is a convex lens used to magnify objects, the prototype of the microscope. Usually used to observe the details of an object. Magnifying lenses are converging lenses with a focal length much smaller than the visual distance of the eye.

Principle:

In order to see tiny objects or details of objects clearly, you need to move the object closer to the eye, so that the angle of view can be increased, so that a larger solid image is formed on the retina. However, when the object is too close to the eye, it cannot be seen clearly. In other words, in order to see clearly, not only should the object have a large enough angle of view to the eye, but it should also be at the right distance. Obviously for the eyes, these two requirements are mutual constraints, if the eyes in front of the configuration of a convex lens will be able to solve this problem.

How to make a simple projector?

First of all, the accessories are ready, including: a display (15 inches or less, generally use 800X600 12-inch laptop LCD screen screen, the price of about one hundred and five. Of course, you can find a high-resolution screen is the best, look at high-definition is very cool. Note that pseudo-color can not be, because the driver board is not equipped), notebook LCD screen change display kit (including: driver board screen line button board power head power adapter VGA line, high-voltage board can not be, these can be to the fourth floor of the QQ computer city with the price of two hundred or so. Note that to take the LCD screen to go with, because to write the driver), a slide, PCI slot fan two (QQ three floor is sold, ten dollars a fan can also be used instead of ordinary chassis fan, just not this beautiful and shading) double-sided adhesive tape, opaque wide tape, 8 mm thick foam board a number of (wide tape I am using advertising *** paper cut, foam board is also used to advertise the back of the board ***) Projection screen a (this thing depends on personal requirements, from two hundred Cixi goods to fifteen thousand Sony screen, a lot of space, of course, if you're not as demanding as I am, you can use the screen does not cost a lot of money - the home of the white walls)

These accessories add up to about six hundred, I used six hundred and thirty dollars, the altar! Those big knife team if only five hundred with all the words I will not be surprised, huh

The next most important thing is to soak the screen tearing film, paper towels to cover the LCD screen, soaked with pure water (I use a water purifier to filter the water of the white sand wells, purely heart effect, you can also use tap water), and then use a plastic bag to cover a good bag folded up to avoid air leakage (you can also use plastic wrap, but I think that Cling film can also be used, but I personally think that the plastic bag is good to operate some), and then what to do to do, ten hours and then open the bag (must be up to ten hours, otherwise it is easy to tear the screen). With a toothpick from a corner, soon you can pick open the anti-glare film, and then start to tear the film with your trembling hands, I personally recommend to keep the room silent, in order to enjoy the tearing of the film that is similar to the wonderful sound of the aircraft takeoff and landing ......

The next thing is relatively simple, remember the elementary school manual labor class? Students, take out your scissors, tape, rulers and pens, start the class ...... (pay attention to deal with light leakage)

After assembly, find a suitable location at home to place it down, this position is best to be fixed, because this thing is relatively large, but also a bit of weight, if you move it frequently, I estimate that you will lose the Look at the interest of the big screen ...... (as a reminder, if the room where the projector is placed is not large, then there must be air conditioning, because the heat of the 300W bulb in the hot summer effect is not covered ......)

With a shoebox and a magnifying glass How to make your own projector

Here's how to make a projector. 1, Cut off the handle of the magnifying glass. 2, cut off the upper part of the plastic bucket, the magnifying glass wrapped in it, and fixed with hot melt glue.

3, in a large shoebox dug a hole slightly larger than the diameter of the plastic bucket, installed the lens, with tape or glue to fix them together. 4, according to the size of the phone, we transformed the body of the small shoebox into a cell phone bracket. The lid of the shoebox can be used as a focusing plate, and the lead of the bracket is fixed to the plate with tape.

5, here you can first test the projection effect, play a video on the phone, and then put the phone upside down into the projector bracket. 6. Change the focus until the projected image is the clearest.

7, through the DIY projector projected onto the wall effect, it is okay, the only shortcoming is that the picture is upside down. 8, upside down to see certainly not happy, and finally to the projector to join the reflector, with a hand to the bracket so drag up.

9, the final effect, ok!

Homemade projector how the most clear

Many people may feel that this production must have a high degree of difficulty, in fact, in the clarification of the principle of liquid crystal projector, you may not think so.

First of all, let's understand our common ordinary liquid crystal display (LCD) principle of operation: as shown in Figure 1, the LCD display is mainly composed of a liquid crystal screen (now the LCD used in the liquid crystal display are TFT true color screen) and a backlight device. TFT LCD is composed of thousands of thin-film transistors, this thin-film transistors in the role of the applied electric field will produce a different The TFT LCD is made up of thousands of thin-film transistors that produce different amounts of light transmission under an applied electric field.

The TFT LCD screen relies on this change in light transmission to display the image, where each thin-film transistor is often referred to as a "pixel". Of course, only by the LCD screen is not possible to let our eyes sense the image of the know, because the LCD screen itself does not emit light, that is to say, must let a certain amount of light through the LCD screen in order to show this change in the amount of light transmission.

So LCD must have a backlight device, in the liquid crystal display (LCD), the backlight device is a few "U" or "S" shaped low-power energy-saving lamps with a uniform plate made, it sends out uniform white light through the LCD panel so that we can clearly see the image. After the LCD panel, we can clearly see the change of the amount of light transmission to obtain the image information. From the previous description can be considered, the LCD panel is essentially equivalent to a slide that can show the moving image! Since this is the case, if we let a uniform beam of bright light through the LCD panel, and then with a convex lens, according to the principle of convex lens imaging, you can get a clear solid image in a position outside the lens! The basic principle of an LCD projector is just that simple! Therefore, the simplest projector is to replace a slide on a slide projector with an LCD panel with the backlight removed! If it is too much trouble to place on the slide projector, then the teaching projector shown in Figure 2 is perfect! Shanghai lawyer: sh.9ask.