The industry believes that at present, regardless of performance, price, image reproduction, picture quality, home projectors significantly exceed TV products. Compared with high-end TV products, the projector has obvious advantages, that is, the picture is large, the brightness is adjustable, it is compatible with a variety of video signals, and the size is not limited, and the weight is light, and it has gradually become a new generation of home video entertainment products. When combined with a sound system into a multimedia home theater, its audiovisual effects are no different from real theaters, even better.
For most consumers, when you bring up the projector, you naturally think that it is only used in a spacious conference room or small movie studio. Recently, however, new products for home projectors have emerged in the market, and prices have been gradually lowered. It is quietly changing the perception that "projectors are suitable for commercialization" in people's minds. The era of projection has become an indispensable part of people's pursuit of big picture and pursuit of quality of life as the digital age approaches.
Home projector tips: Home projectors, also known as cinema projectors, are quite different from projectors used for business meetings. Business projectors have high brightness and low contrast. They are good for displaying computer data (mainly text charts), but they are not suitable for displaying dynamic image images. The images displayed on them are less layered and the color is distorted. The movie looks like Like a watercolor (because the color details are not enough), it is not true; while the home projector is just the opposite, does not need too high brightness, improves the contrast, makes the display image color very real, and the layering is good. Brightness and contrast are two extremes in the projector world. The current technology, the brightness is high, the contrast is low, the layering is poor, suitable for commercial use; the contrast is high, the brightness is low, the picture is soft and real, suitable for home use. Therefore, it is not appropriate to use a business machine for home use, otherwise there will be no commercial or household points.
Home projectors are currently popular in two camps, one for LCD (liquid crystal) technology and one for DLP technology. Projectors using LCD technology (the main principle is that light is imaged through a liquid crystal panel that can control light transmittance) have the advantages of bright colors, high resolution, and low price. DLP technology (the main principle is that the light is imaged by thousands of small lenses that can be selectively reflected on the chip, and the lens can be switched more than 1000 times in one second) is a new technology, which is characterized by good image layering. No graininess, good black effect (black of LCD is light combination, black does not go down, it always feels gray), but at the same resolution, DLP technology projector is more expensive than LCD technology, but DLP technology is definitely The direction of the home projector in the future. DLP machines and LCD machines with the same resolution, the overall quality of the picture is better than the actual viewing effect of DLP.
The real reason why the projector is not recognized by most consumers is that most people don't have a lot of chances to see the real effects of the projector, as well as the placement of the projector and the variety of video cables that can't be covered behind it. professional concern. In fact, as long as you understand its real effects and specific placement rules, you will understand that the projector has a strong ease of operation and the lowest space occupancy. Because of its special imaging principle, the projector needs to be coordinated with the position of the sofa. If the method is placed on the coffee table in front of the sofa, the fixing of the projector cable and the projection screen becomes the first problem to be solved. And if you accidentally get water into the projector, it will be a fatal injury to the projector. Moreover, the traditional Chinese living room is not very large, and the projector is placed in the middle to directly affect the projected size of the picture. The projection distance and imaging size of most popular projectors are now consistent with the viewing distance of most people. For example, the average person's distance of 3 meters is better than 80 inches. The projection distance of the projector is 3 meters, preferably 80 inches. The distance of 4 meters is better than 100 inches, and the projector is basically the same. Therefore, the use of hoisting should be an ideal choice. The projector can be hoisted and fixed, and the position, size and definition of the screen can be fixed at one time. A variety of video lines can be hidden by embedding, which is convenient to operate and practical.
Most projectors do not have a lens shift (LENSSHIFT) function. Therefore, when selecting a ceiling mount projector, first notice whether the lens of the projector overlaps with the center of the projector boom. If there is a deviation, determine the lifting position. Time to consider the offset. Most of today's projectors are designed for fixed elevation projection. If hoisting is used, the height of the hoisting is also very particular. For example, Optoma, Mitsubishi, the projection height and the same screen size, the lifting height is relatively high, and it is easy to close to the ceiling. The hoisting effect is better. If you choose BenQ projector, it is not suitable for lifting. Because its projection angle is 0 degree, the projector will be hoisted very low, which will easily damage the living room environment. Hangers for hoisting projectors generally use ordinary universal hangers, which are white, flexible, compact, easy to fix, and can be adjusted up and down. There is also an electric hanger, which can completely hide the projector inside the ceiling. Of course, this requires a larger ceiling space, which is suitable for the living room lifting with higher floor height.
The power of the projector is also important, because the picture is large, and if the picture has small ripples, it can be easily seen. Therefore, it is recommended to pull a power cord directly from the power distribution box to the projector during the decoration, and it is equipped with a switch to control. (If the voltage is unstable in the cell, it may cause the projector to burn the power fuse in the standby state) This will not bother you to turn off the projector every time you climb up and down. Note that the power of the projector cannot be put together with the switch of the light or the general switch, otherwise it is easy to directly turn off the power, so For the life of the lamp has a great influence, it is recommended to set the power switch separately, which is generally easy to ignore.
The next thing to note is the selection of the video line behind the projector. Pay attention to the functions you want to achieve in the wiring. If the functions are different, then the wiring materials are different! For example, if you choose the projector with digital HDMI interface, then the HDMI digital video cable is It must be clothed, because HDMI can transmit digital signals, multiply the picture to high resolution (720P, 1080P), obviously improve the definition of the projected picture, and can also display the high-definition signal source (the signal source itself is 720P or 1080P); If you want to use the projector to connect to the TV signal, then most of the TV boxes now have a computer VGA interface, which can make the resolution of the picture reach 1024X768, so that the TV picture clarity and stability are better than the video line. The effect is good, so the wiring of the VGA cable should be considered when wiring; if the game external function is to be implemented, the color difference line (also called the component line, the video line of the three coaxial lines side by side) is also mandatory, and the color difference line can also be used. Watching a DVD, if you have a desktop computer, you can consider laying a DVI or HDMI cable. If the projector you choose has a DVI connector, it is also wise to lay a DVI cable. Also pay attention to the decoration process, the HDMI, DVI and VGA in the video cable are best in the regular factory line, and do not just go to the head to wear the pipe, these joints are factory welding, if manual welding 80% will affect the picture Quality, it is recommended to use thick pipe, square groove or break the pipe, and insert the wire into the way to wire. Above the wiring, the workers can do it. When you are walking, pay attention to the angle of the arc as much as possible to avoid the shielding effect of the wire. Strong power and weak points try to ensure a certain distance to prevent magnetic interference.
In order to avoid rework problems during the decoration, it is best to choose the projector before the decoration and make the wiring diagram. When designing your home theater projection system, place the disc player close to the projector in the home environment and location, and the amplifier is still in front, so the video cable is greatly shortened, not only guaranteed. The video optimization effect also reduces the cost, and the disc player to the amplifier only needs a good coaxial line to solve the problem, does not require too much cost, and it is convenient to change the disc when watching the disc.
In the design of this part of the projection screen, if you choose the hand-drawing screen or the electric screen, you should hide the projection screen in the ceiling when you put it in. The position and size of the ceiling slotting and the remaining margin are more important. Also practical. In one case, the front wall does not have a TV installed, so the slotted position is close to the wall surface, because the curtain is placed as close as possible to the wall, and it will not swing with the wind. If the front wall is to be equipped with a TV (plasma or liquid crystal), then according to the actual situation, the slotted position should be moved outward to a certain size, such as plasma or liquid crystal does not exceed 42 inches, can be calculated according to the external shift of 18cm, if you The projected projection is a 100-inch screen, and the width, thickness and depth of the groove are preferably 260 cm * 15 cm * 20 cm. The depth reaches 20cm, so the projection screen can hardly be seen in the sofa position after installation. If your ceiling is only 15cm, you may see the horizontal bar at the bottom of the screen. The width of the ordinary 100-inch screen cover should be about 250cm (the size of the 90-inch case is about 225cm), and 10cm left and right is convenient for installation and borrowing. If your projector is flexible, you can follow the tips or instructions I gave you. If your projector position has been determined, then you have to reserve more width, otherwise it will be easy to fill up. The situation of the screen.
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