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What is the projection ratio ? The definition of the formula refers to the ratio of the projection distance to the width of the screen. Here, the editor needs to explain. We usually call the length of the projection screen as width and width as height, so do n’t get it wrong. In fact, projection is not only as simple as a definition. It can reflect the changes in projection technology over the years. From the earliest telephoto projectors to today's short-throw projectors, the projection ratio is getting smaller and smaller, which makes the projector more applicable. Extensive, in short, short distance, big picture.
So what is the value of the projection ratio of the projector? The projection ratio of ordinary projectors is usually between 1.5 and 1.9. When the throw ratio is less than 1, we usually call it a short throw lens, and when the throw ratio is less than 0.6, we usually call it an ultra short throw lens. In addition, the projection ratio can also be a range, because some projectors support zoom, that is, they have different size effects at the same distance, and users can adjust it according to their needs.
So, how often does the ordinary, short-throw, and ultra-short-throw projector that we usually encounter need a fixed projection screen size? Projector www.touying.com Xiaobian takes our common projector with a projection screen of 16: 9. To project a 100-size screen, the projection distance of the projector is about 3.3 meters when the projection ratio is 1.5 When the projection ratio is 1, the projection distance of the projector is about 2.2 meters; when the projection ratio is 0.4, this is what we usually refer to as a reflective ultra-short throw laser projector. It is about 0.4 meters.
The original projector needs a distance of two or three meters to project a picture of more than 100 inches. This makes most projectors choose the ceiling-mounted installation method, which is also acceptable for education and other fields, because the wiring and Design arrangements have been made for installation. However, for some users who do not reserve the position of the projector, it will be troublesome, and routing everywhere will also affect the aesthetics of the interior.
The narrowing of the projection ratio value brings great convenience to our lives
Now with the development of technology and changes in people's needs, the projection ratio of projectors has been continuously reduced, and ultra-short throw projectors that can project large screens at short distances have become a trend. At present, laser ultra-short throw projectors are increasingly used in education, home and other fields. The main reason is that ultra-short throw projectors greatly shorten the projection distance, eliminating many users who want to use the projector but suffering from the narrow indoor space. In addition, the reduction of the projection ratio has many advantages, such as the light will not shine on the speaker in front of the curtain , affecting the speaker's speech and audience viewing.
The application of ultra-short throw projectors in home laser TVs will also stimulate a reduction in projection ratio
Will the projection ratio of the projector continue to decrease? The editor believes that laser TV is still heating up, and everyone knows that laser TV uses a reflective ultra-short throw projector. The more intense the competition in the laser TV industry, the more technical changes will be promoted, and it is still possible that the projection ratio will continue to decrease. When you pay attention to the price of the projector, you also need to pay more attention to some changes in the projection ratio of the projector.
So what is the value of the projection ratio of the projector? The projection ratio of ordinary projectors is usually between 1.5 and 1.9. When the throw ratio is less than 1, we usually call it a short throw lens, and when the throw ratio is less than 0.6, we usually call it an ultra short throw lens. In addition, the projection ratio can also be a range, because some projectors support zoom, that is, they have different size effects at the same distance, and users can adjust it according to their needs.
So, how often does the ordinary, short-throw, and ultra-short-throw projector that we usually encounter need a fixed projection screen size? Projector www.touying.com Xiaobian takes our common projector with a projection screen of 16: 9. To project a 100-size screen, the projection distance of the projector is about 3.3 meters when the projection ratio is 1.5 When the projection ratio is 1, the projection distance of the projector is about 2.2 meters; when the projection ratio is 0.4, this is what we usually refer to as a reflective ultra-short throw laser projector. It is about 0.4 meters.
The original projector needs a distance of two or three meters to project a picture of more than 100 inches. This makes most projectors choose the ceiling-mounted installation method, which is also acceptable for education and other fields, because the wiring and Design arrangements have been made for installation. However, for some users who do not reserve the position of the projector, it will be troublesome, and routing everywhere will also affect the aesthetics of the interior.
The narrowing of the projection ratio value brings great convenience to our lives
Now with the development of technology and changes in people's needs, the projection ratio of projectors has been continuously reduced, and ultra-short throw projectors that can project large screens at short distances have become a trend. At present, laser ultra-short throw projectors are increasingly used in education, home and other fields. The main reason is that ultra-short throw projectors greatly shorten the projection distance, eliminating many users who want to use the projector but suffering from the narrow indoor space. In addition, the reduction of the projection ratio has many advantages, such as the light will not shine on the speaker in front of the curtain , affecting the speaker's speech and audience viewing.
The application of ultra-short throw projectors in home laser TVs will also stimulate a reduction in projection ratio
Will the projection ratio of the projector continue to decrease? The editor believes that laser TV is still heating up, and everyone knows that laser TV uses a reflective ultra-short throw projector. The more intense the competition in the laser TV industry, the more technical changes will be promoted, and it is still possible that the projection ratio will continue to decrease. When you pay attention to the price of the projector, you also need to pay more attention to some changes in the projection ratio of the projector.
