Don’t say that the screen is a vase ! The role of the projection screen is so big.
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In the use of the projector, most people will not pay attention to
the role of the projection screen in the whole process of use. Many
friends think that the projection screen is a dispensable product, and
if it is, it is naturally better. If it is not, it will not hurt. But is
this really the case? Let’s talk about it today.
Is the projection screen
a dispensable product?
To explore this issue, we must first understand the projection screen.
It has its own resolution
I know that the projector has a resolution, but I have never heard of
the resolution of the screen. In fact, the projection screen has a
resolution and its resolution plays an important role in the projection
process.
The resolution of the projection screen refers to the size of the
smallest optical structure on the screen. In the case of a rear
projection TV, or a resin hard screen, the user can observe that there
are regular geometric cylinders on the screen; however, it is not
visible for general white plastic screens and bead screens.
The projection system can display a clear picture when the resolution
of the screen is significantly higher than the resolution of the
projector.
The projection system can display a clear picture only when the
resolution of the screen is significantly higher than the resolution of
the projector. If the resolution of the projection screen is
significantly lower than the resolution of the projector, then even the
best projector can only project a “mosaic” picture.
It has its own viewing angle
Another key parameter
of the projection screen is the viewing angle. The concept of the
viewing angle can be understood as the visible angle when the amplitude
of the radiated light attenuation reaches 50% of the intermediate area,
and the angle between the left and right visible edges is the viewing
angle. After the angle range is exceeded, the color and brightness are
drastically reduced, which seriously affects the viewing effect.
The viewing angle of the projection screen is determined by the geometry of the smallest optical structure of the screen.
The viewing angle of the projection screen is determined by the
geometry of the smallest optical structure of the screen. The viewing
angle of the screen is also closely related to the brightness uniformity
of the screen, the brightness, contrast and color effects at different
viewing angles. It can be said that the viewing angle of the screen is
higher than that of the screen.
It can achieve brightness gain
What is gain? Simply speaking, in the case where the projector and
the ambient light are fixed, the projection screen reflects the ratio of
the brightness of our naked eye to the brightness of the white wall. In
theory, choosing a high-gain projection screen can bring a brighter
picture in order to achieve the purpose of overcoming the ambient light.
The principle of the screen gain is exactly the opposite of the viewing angle.
But the actual use is not as the theory says, the principle of
the screen gain is exactly the opposite of the viewing angle. The
high-gain screen is suitable for the lack of brightness of the projector
itself, and has obvious damage to the viewing angle, color, brightness
uniformity and contrast effect. It can only be said that the fish and
the bear’s paw can’t have both!
It can achieve contrast enhancement
There are two main ways to increase the contrast of the projection
screen: one is to reduce the emissivity, and the second is directional
reflection. At present, the high-grade projection screen is designed to
reduce the interference of ambient light by processing the reflection
and absorption laws of light at different incident angles through
precise optical structure design.
It can be seen that the projection screen is not a useless “vase”.
When friends choose the home projector carefully, they also need to
spend some thought on the choice of projection screen. A good projection
effect does not only require a good projector, but the use of the
screen is very important.
It is very simple but first, we should know about the types of manual pull-down projection screens that are down below. 1.) Manual Auto/lock Projection Screen 2.) Manual Pull Down Spring Action Now, Let’s see what is the difference between these two and how they work. Manual Auto/lock Projection Screen The manual auto-lock projection screen locks there were to leave it. There is manual auto-lock projection you are pulling it out of the casing by holding the hook or whatever there is to pull it down. You don’t need to hook it onto a nail or anything it stops automatically and to roll it back you just need to give it a little push and the spring in the casing will do the rest. Manual Pull Down Spring Action Also known as the wall type spring action. The core difference between these two was the self-lock mechanism. Manual pull down spring action doesn’t have any instant locking system. So you have to hook the holder onto a nail to make it stop
Are you confused about which projection screen to choose? Want quick information about the front and rear projection? Here’s an ultimate guide that will help you know in-depth about what’s better for you and what will make your movie viewing experience worth it! Optical front projection and rear projection screens provide many of the same benefits. Both projection screen types offer enhanced contrast and brightness compared to conventional non-optical projection screens. When this is said, there are major differences. Generally speaking, optical rear projection screens generate the best image, but they also require more space. Optical front projection screens are extremely space-effective, but also less resistant to ambient light than rear projection screens. Here we outline the main differences between the front and rear projection so you can decide what best suits your specific requirements. Space Usage Front projection does not require sp
Turn any room into a meeting room or classroom with this OHYES Screens Tripod Series portable projector screen. Keystone eliminator mechanisms offer easy aiming and calibration, while the MaxWhite screen material delivers a clear, crisp viewing area. A folding tripod eliminates the need for ceiling or wall mounting, making this screen conveniently portable. With a 160° viewing angle and compatibility with 4K Ultra HD, active 3D and HDR, this Elite Screens Tripod Series portable projector screen provides exceptional picture quality from virtually anywhere in your room. Portable projection screen for indoor and outdoor small or large venue presentations Diagonal size: 113″ Aspect ratio: 1:1 MaxWhite screen material is durable and easy to clean Frame construction: steel Packaging dimension: 4.7″H x 4.7″W x 90″D Weight: 17.9 lbs. Meets or exceeds GREENGUARD/GREENGUARD Gold standard Viewing angle: 160 degrees wide with 1.1 gain 2-year manufacturer limited warranty
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