In many HD enthusiasts, they are willing to use home projectors as the first choice for watching movies. However, the projector is not very familiar with it, and it is not even known how to choose a home projector. In fact, this situation is normal, especially for the friends who have just contacted the projector, in the face of a wide variety of mixed markets, the eager feeling will be counterproductive, often fraudulent by fraudulent, spend money to buy the products they need.
Today, I’ll introduce you to the techniques of buying a home projector and help people to purchase it on demand according to the indicators.
First, the size of space
The space size is the size of the living room, audio and video room where you use the projector. If your living room area exceeds 20 square meters, you may consider purchasing a projector; if not, it is not recommended. Observe the projection screen. The distance between the projection screen and the sofa should be more than 4 meters. Otherwise, the viewing result will be poor and it will damage the vision.
Second, the price
The price difference between projectors is relatively large, generally ranging from a few thousand to 50,000 or even higher. The price of foreign brand products is higher than that of domestic ones, and the price of domestically-made projections is relatively low. The reason is not detailed. For most consumers, products under 30,000 yuan can meet domestic needs.
Buy projectors, try to find a more formal large agents to buy, because the projector profits are higher, the general price of 20,000 yuan products, bold bargain 8% no problem.
Third, brightness
Brightness is one of the most important indicators for purchasing a projector. Now that projector prices are getting lower and higher, brightness is getting higher and higher, and 2000 lumens of products have become very popular. But does a home projector need such high brightness?
High-brightness projection screens, if viewed for a long time, can damage vision. In fact, 800 lumens projectors are already sufficient to meet the needs of low background lighting. If not in the daytime, or when the projector is fully lit at home, then 800-1000 lumens of product is enough, even if the background light is a little brighter, a product of 1200 lumens is enough.
Fourth, noise
I have not used a projector and I am not aware that the projector emits noise when used. Some projectors have serious noises that make them unbearable. When purchasing a projector, consider that low noise should be an important item in your purchase. At present, many manufacturers have introduced low-noise projectors and the price is not expensive.
In general, products with a noise level below 40dB are acceptable, but you should listen and compare yourself in a relatively quiet environment to see if you can interfere with yourself.
Fifth, choose DLP or LCD
Whether LCD or DLP is in fact not so important. What we need to look at is the effect of the projector. The effect of a projector is inseparable from many things such as lens, light bulb, and circuit. In principle, LCD projectors are the most common and their prices are relatively low.
The biggest benefit of the LCD projector is that the colors are great. The three primary colors of red, green, and blue are completed by three separate liquid crystal panels. The brightness and contrast of each color can be individually controlled, and the three colors of light can reach the screen at the same time. , so you can truly reproduce a variety of colors.
Although the DLP projector is slightly less color reproducible, because the single-chip DLP projector 3-color light is reflected by the same micromirror to the same pixel point, there is no convergence problem, so the black area is really black, and the pixel point edge is not There will be some flashes and shadows in the LCD, so when showing some fine lines, the DLP projector is sharper and sharper than the LCD projector, black and white is more pure, and the gray level is more abundant. Of course, the biggest advantage of the monolithic DLP projector is its small size and light weight. Many products even have only 1-2 kg. In general, DLP projectors are slightly more expensive.
seeing is believing. Whether LCD or DLP, it is advisable to compare carefully at the time of purchase. There is an evaluation software called Shoot-out that can compare the details of different projectors.
Six, trapezoidal correction
In the use of the projector, the position of the projector should be at right angles to the projection screen as much as possible to ensure the projection effect. If you cannot guarantee the verticality of the two, the picture will be trapezoidal. If it isn't hoisting but it's on the table, we can't guarantee "vertical". In this case, we need to use the "trapezoid correction function" to correct the trapezoid to ensure that the picture is a standard rectangle. Keystone correction usually has two methods: optical trapezoidal correction and digital trapezoidal correction.
Optical trapezoidal correction refers to the purpose of adjusting the trapezoid by adjusting the physical position of the lens; another type of trapezoidal correction is to achieve trapezoidal correction through software. At present, almost all projector manufacturers have adopted digital trapezoidal correction technology, and most projectors that adopt digital trapezoidal correction support the vertical trapezoidal correction function, that is, the projector can adjust its height in the vertical direction, resulting from Trapezoidal, through the projector's vertical trapezoidal correction, you can make the screen into a rectangle, which facilitates the user's use.
Few new products do not have trapezoidal correction, and the price is not so expensive. However, some old machines do not have it. When buying, you need to pay attention to whether the purchased machine has this function. At the same time, even though the keystone correction is not used during the home screening, because the image is corrected, some lines and character edges of the screen will have burrs and unsmoothness, which leads to a poor projection effect.
Seven, projection screen selection
For the average consumer, the projection screen should be considered, unless the walls of the friends are clean, white, spotless, or the projection of the projector directly on the wall is tantamount to violent objects. According to different manufacturing processes and surface coatings, the projection screen is generally divided into ordinary white screens and glass bead screens.
The ordinary white screen is made by spraying white paint on a special fabric and doing a simple treatment. It is characterized by low price, wide viewing angle, and soft visual effects. The disadvantage is that the gain of light is small, so it is only suitable for use in homes with less background light, otherwise it needs to be used with high-brightness projectors.
Glass bead screen is made by spraying tiny glass powder on special fabrics. It has the advantages of moderate price, wide viewing angle and high gain. The disadvantage is that the price is more expensive, and the color will be darker. At the same time, it should not be rolled up repeatedly. Otherwise, the bead tends to fall off and affect the use effect.
The soft screens currently sold in the domestic market can be divided into domestic and imported categories according to their origins. The advantage of imported screens is good quality. Generally, the screen colors begin to gradually turn yellow after two to three years of use. The disadvantage is that it is expensive and is 3 to 5 times more expensive than domestically produced products of the same specifications. The domestic screen has the characteristics of cheap price, complete specifications and good after-sales service, but there are many products in the use of 1 year after the phenomenon of yellowing and curling.
Irrespective of whether the wall is white or not, and how the home ambient light is, a projection screen is recommended instead of the wall projection. The brightness of the home background is relatively high, and the brightness of the projector exceeds 1000 lumens, and a common curtain worth several hundred yuan can be considered. If the background brightness of the home is high or the brightness of the projector is insufficient, you may consider buying a bead curtain with a slightly higher price to increase the projection brightness.
According to the above criteria, it is very simple to choose a home projector that is suitable for you. Not only is logistics cheap, but it also avoids being cheated by a profiteer. High-definition devices, coupled with high-definition video, we will certainly love more and more high-definition audio-visual.
First, the size of space
The space size is the size of the living room, audio and video room where you use the projector. If your living room area exceeds 20 square meters, you may consider purchasing a projector; if not, it is not recommended. Observe the projection screen. The distance between the projection screen and the sofa should be more than 4 meters. Otherwise, the viewing result will be poor and it will damage the vision.
Second, the price
The price difference between projectors is relatively large, generally ranging from a few thousand to 50,000 or even higher. The price of foreign brand products is higher than that of domestic ones, and the price of domestically-made projections is relatively low. The reason is not detailed. For most consumers, products under 30,000 yuan can meet domestic needs.
Buy projectors, try to find a more formal large agents to buy, because the projector profits are higher, the general price of 20,000 yuan products, bold bargain 8% no problem.
Third, brightness
Brightness is one of the most important indicators for purchasing a projector. Now that projector prices are getting lower and higher, brightness is getting higher and higher, and 2000 lumens of products have become very popular. But does a home projector need such high brightness?
High-brightness projection screens, if viewed for a long time, can damage vision. In fact, 800 lumens projectors are already sufficient to meet the needs of low background lighting. If not in the daytime, or when the projector is fully lit at home, then 800-1000 lumens of product is enough, even if the background light is a little brighter, a product of 1200 lumens is enough.
Fourth, noise
I have not used a projector and I am not aware that the projector emits noise when used. Some projectors have serious noises that make them unbearable. When purchasing a projector, consider that low noise should be an important item in your purchase. At present, many manufacturers have introduced low-noise projectors and the price is not expensive.
In general, products with a noise level below 40dB are acceptable, but you should listen and compare yourself in a relatively quiet environment to see if you can interfere with yourself.
Fifth, choose DLP or LCD
Whether LCD or DLP is in fact not so important. What we need to look at is the effect of the projector. The effect of a projector is inseparable from many things such as lens, light bulb, and circuit. In principle, LCD projectors are the most common and their prices are relatively low.
The biggest benefit of the LCD projector is that the colors are great. The three primary colors of red, green, and blue are completed by three separate liquid crystal panels. The brightness and contrast of each color can be individually controlled, and the three colors of light can reach the screen at the same time. , so you can truly reproduce a variety of colors.
Although the DLP projector is slightly less color reproducible, because the single-chip DLP projector 3-color light is reflected by the same micromirror to the same pixel point, there is no convergence problem, so the black area is really black, and the pixel point edge is not There will be some flashes and shadows in the LCD, so when showing some fine lines, the DLP projector is sharper and sharper than the LCD projector, black and white is more pure, and the gray level is more abundant. Of course, the biggest advantage of the monolithic DLP projector is its small size and light weight. Many products even have only 1-2 kg. In general, DLP projectors are slightly more expensive.
seeing is believing. Whether LCD or DLP, it is advisable to compare carefully at the time of purchase. There is an evaluation software called Shoot-out that can compare the details of different projectors.
Six, trapezoidal correction
In the use of the projector, the position of the projector should be at right angles to the projection screen as much as possible to ensure the projection effect. If you cannot guarantee the verticality of the two, the picture will be trapezoidal. If it isn't hoisting but it's on the table, we can't guarantee "vertical". In this case, we need to use the "trapezoid correction function" to correct the trapezoid to ensure that the picture is a standard rectangle. Keystone correction usually has two methods: optical trapezoidal correction and digital trapezoidal correction.
Optical trapezoidal correction refers to the purpose of adjusting the trapezoid by adjusting the physical position of the lens; another type of trapezoidal correction is to achieve trapezoidal correction through software. At present, almost all projector manufacturers have adopted digital trapezoidal correction technology, and most projectors that adopt digital trapezoidal correction support the vertical trapezoidal correction function, that is, the projector can adjust its height in the vertical direction, resulting from Trapezoidal, through the projector's vertical trapezoidal correction, you can make the screen into a rectangle, which facilitates the user's use.
Seven, projection screen selection
For the average consumer, the projection screen should be considered, unless the walls of the friends are clean, white, spotless, or the projection of the projector directly on the wall is tantamount to violent objects. According to different manufacturing processes and surface coatings, the projection screen is generally divided into ordinary white screens and glass bead screens.
The ordinary white screen is made by spraying white paint on a special fabric and doing a simple treatment. It is characterized by low price, wide viewing angle, and soft visual effects. The disadvantage is that the gain of light is small, so it is only suitable for use in homes with less background light, otherwise it needs to be used with high-brightness projectors.
Glass bead screen is made by spraying tiny glass powder on special fabrics. It has the advantages of moderate price, wide viewing angle and high gain. The disadvantage is that the price is more expensive, and the color will be darker. At the same time, it should not be rolled up repeatedly. Otherwise, the bead tends to fall off and affect the use effect.
The soft screens currently sold in the domestic market can be divided into domestic and imported categories according to their origins. The advantage of imported screens is good quality. Generally, the screen colors begin to gradually turn yellow after two to three years of use. The disadvantage is that it is expensive and is 3 to 5 times more expensive than domestically produced products of the same specifications. The domestic screen has the characteristics of cheap price, complete specifications and good after-sales service, but there are many products in the use of 1 year after the phenomenon of yellowing and curling.
Irrespective of whether the wall is white or not, and how the home ambient light is, a projection screen is recommended instead of the wall projection. The brightness of the home background is relatively high, and the brightness of the projector exceeds 1000 lumens, and a common curtain worth several hundred yuan can be considered. If the background brightness of the home is high or the brightness of the projector is insufficient, you may consider buying a bead curtain with a slightly higher price to increase the projection brightness.
According to the above criteria, it is very simple to choose a home projector that is suitable for you. Not only is logistics cheap, but it also avoids being cheated by a profiteer. High-definition devices, coupled with high-definition video, we will certainly love more and more high-definition audio-visual.
Product application:
â– Products for commercial,household,lighting
Product features:
â– Good contact
--The contact point composite silver layer is designed to reduce
the contact resistance and reduce the temperature rise.
â– Ultra high strength,impact resistance and thermal stability
--The upper cover is made of high quality polycarbonate and the
bottom shell is made of PA6
â– Chemical corrosion resistance
-- Fingerprint-resistant zinc plated mounting brackets
â– Grounding
--One-piece grounding design
Switch UL,Decorative Switch UL,Electrical Switch UL,White Switch UL
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