What is a screen projector?
Everyone absolutely loves watching movies in the movie theater because of the absolute immersive movie watching experience it offers. It is all made possible because of projectors.
A screen projector in simple terms is an optical device which projects an images onto a surface and when the light is reflected we see the image.
From what is stated above screen projectors have been around from a really long time and it is different from other modern world display technologies. Modern televisions are aiming for how small a pixel can be made to produce the absolute sharp images or how black can the black get.
Why projector? Effects of Projector on eyes
Projector because it enriches you with a with a very immersive experience. Specially when it comes to movies as it produces the big theatre screen like experience which does not aim for the most sharp picture or maximum frame rate but rather the essence of cinema experience which is an art.
Projector screens actually are better for your eyes. Projectors are able to produce much larger images, which put less strain on your eyes. Also reflected light is easier on your eyes, keeping your eyes comfortable without the added strain created by emitted light.
In the present age, the modern television sets are far brighter than their predecessors. TV manufacturers are constantly seeking ways to enhance the brightness of their products. This is due to the fact that increased brightness results in a clearer and more realistic picture.
Nevertheless, there are limits to how much brightness our eyes can tolerate. Experienced headaches or tiredness in your eyes after staring at a computer screen or TV screen for an extended period? This may be attributed to the brightness, especially if you’re watching your screen in the dark. As brightness is a personal element, still what may be tolerable for someone today could become more difficult to handle as they age or their eyes become more tired.
Suggested ambient light for projectors-
| Environment—> | Dark Room | Dim Room(soft light) | Lit Room(no daylight) | Bright Room(with windows) |
|---|---|---|---|---|
| Suggested Brightness—> | 50 nits | 100 nits | 200 nits | 300-400 nits |
| in Lumens–> | below 1500 | 2000-3000 | 3000-4000 | 5000 |
Projector screens, on the other hand, do not emit light. In reality, these screens reflect the image that is projected onto them from the projector. This greatly reduces the amount of light that enters your eyes, thereby minimizing the stress on your optic nerve. As a result, for many individuals, viewing an image or movie on a projector screen is a more comfortable experience.
If televisions were capable enough to replace the projectors then they would have. But it is not the case as viewing experience does not depend on just sharp images or very fast frame rates instead it depends on specific number of frames, specific screen size, specific sharpness, etc. instead of maxing out everything specific adds character and hence emersion in movies.
One can argue that a lot of innovation being done in televisions but not in projectors but it is so because, television is built to be the jack of all trades but master of none. It makes sense too as televisions are targeted for a really wide audience. For example homes where 2-3 generations of the family are living under one roof so there is one television showing T.V. shows, cartoons, Youtube, games on Playstation. Hence to be able to do it all and decently it has to have a very sharp picture quality, high refresh rate, etc.
Types of Projectors(which is the best)
There are 5 types of widely used projectors-
- DLP(Digital Light Processing)
- LCoS (Liquid Crystal on Silicone)
- LCD (Liquid Crystal Display)
- LED
- Laser
Here is an overview table of advantages and disadvantages of each-
| Header 1 | DLP | LCoS | LCD | LED | Laser |
|---|---|---|---|---|---|
| Advantages–> |
-Sharpness -3D -Fast motion -Brightness |
-Dark blacks -High contrast ratio. -Film-like images |
-High brightness -Good rendering of blacks -Good handling of motion |
-20,000+ hour lifespan. |
-20,000+ hour lifespan. -Infinite contrast ratio. -Light output consistent over time. -Quiet operation |
| Disadvantages–> |
-Muddy rendering of black colors. -Limited placement flexibility. -Possible rainbow effect. |
-Low maximum brightness.
-Noisy 3D -Blurry (fast-motion scenes). -Expensive |
-Noisy dynamic iris.
-No LED or laser light engine options. |
-Cannot replace the light engine if it eventually dies. -Lower maximum brightness than bulb-based projectors. -Expensive |
-Cannot replace the light engine if it eventually dies. |
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