Want to start the projector? Let's see if your home is suitable
It is estimated that anyone who knows a little about projection will say “brightness and high contrast are sufficient”. The degree of one-sidedness of this view Xiaobian has no intention of commenting. Today we will introduce to you an important parameter of a projector, the throw ratio.
Do not underestimate this property, it may make your projector become furnishings!
Projection ratio refers to the ratio of the projector to the projection screen size. The size of this value determines the size of the screen that the projector can project at the same distance—the smaller the ratio, the larger the projection screen.
In other words, if we are going to install a projector in the living room and we have already bought the curtain, then the throw ratio will determine where the projector will be installed (after all, your home is not big enough).
If the projection ratio of the projector is too large or the room is small, the projection screen cannot be covered with the curtain. Even if the issue of aesthetics is not concerned, the white border around the screen will affect the viewing experience (normally, the screen is surrounded by the black border of the curtain, which has the effect of gathering the audience's visual attention). It can be said that the projection ratio It largely determines whether a projector can be used in a room.
How do you choose the right projection ratio?
The figure above shows the size of the screen. We can use the formula: "shortest throw ratio x width of screen = distance of projection" to get the distance needed for different screen sizes.
As an example of a small whale projection F1, assuming that we need to project a 100-inch picture, and the projection ratio of this projector is 1.2:1, then it needs a projection distance of 1.2×2.214=2.67 meters.
Considering that many users install the projector directly in the living room, in order to ensure that the projection screen is not disturbed, the room needs to reserve additional space for people to walk around, as well as placing furniture (non-wall-mounted mode); when selecting the projection, This requires special attention. You cannot choose a projector whose projection distance is exactly equal to the width of the room.Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, TV boxes, smart TVs, smart TV software, etc. Answering questions.
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In order to enhance the adhesion of the gold film, a very thin chromium base film is plated.
The gold film of the silicon substrate has strong adhesion, high thermal conductivity (the thermal conductivity is about 111 times that of glass), and the heat resistance is much better than that of the glass substrate.
Because it is a metal film, the reflectance or reflectance wavelength characteristics will not change greatly with the incident angle.
·The gold film has a high reflectivity in the infrared spectrum. The light that is not reflected is completely absorbed by the film and will not pass through.
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