How Do Short Throw Projectors Work?

The advancement of technology has reached different areas of our life. We can enjoy it for both work and recreational purposes. Among the wide variety of devices created to make people’s lives easier, we can find projectors. 

Projectors have become a versatile tool thanks to the technological advances introduced in them. It is a device capable of receiving a video signal to project images thanks to a lens system.

These devices have become essential in many people’s lives, whether for work or entertainment. That is because they are tools that allow you to view different types of high-quality, high-resolution content on different screen sizes and anywhere, providing an excellent user experience. 

We have to take into account that there are several types of projectors with different characteristics.

If you are going to buy a conventional projector, it is essential that you know its most important features such as resolution, brightness, functionalities, accessories, etc. However, one of the most interesting and that not all people know is the throw. 

It is expected that people do not know that term when they go to buy a projector. It is the distance that the projector needs to throw an image to the surface where we want to reflect the image. There are 3 types of throws: 

  • Short throw. 
  • Long throw. 
  • Ultra-short throw. 

The first one can create image sizes from 100 inches to 4 feet from the screen and get a large, clear image. If we place it at a greater distance, the image will be slightly blurred. 

The second one is ideal for distances of 6 feet or more. If we place the projector at a closer distance, the image will look smaller, which is a disadvantage in large rooms. 

The third one is not very common and should be placed at most 15 inches from the screen. A device with this type of throw is not versatile like the others. 

How Do Short Throw Projectors Work? 

These types of projectors don’t have to be very far from the screen to project great images. Therefore, they can be used in many places such as at home, companies, schools (or universities), commercial establishments, etc.

The short-throw is the distance the projector needs to “throw” an image onto the screen to obtain the desired size. 

It should be noted that in certain situations, we can identify the type of throw of our projector through two letters. For example, in the case of Short Throw, it would be denoted by the letters ST. 

It is important that a person understands the operation of a short-throw projector so that he knows how to differentiate it from others when buying one. Generally, the lens of this device is fixed. The projector should be placed on the floor or mounted close to the ceiling to prevent it from being exposed to people. 

The image is projected through the lens onto the surface from a certain angle. One of the advantages of this projector is that it eliminates the light that is superimposed on the people in front either during a presentation or when someone is passing by.

In addition, it also removes shadows that are often common in other types of projectors. 

Short Throw Projectors are Good for Homes 

Long-throw projectors may not be the best option for homes as they must be 6 feet away from the screen in order to create a 60-inch image. We have to bear in mind that not all homes are small or have the same structure, so this can be a problem. 

Short throw projectors solve that problem since they need to be placed closer (4 feet or less) to create a screen of approximately 60 inches. It is recommended that these types of projectors be mounted on the ceiling or placed on the floor.

Keep in mind that if you mount the projector on the ceiling, it will not create shadows on the screen every time people walk in front as the light is coming from above. 

Another alternative would be the ultra-short-throw projectors which you can place at a much closer distance (20 inches or less) to get a 60-inch screen. 

The advantage of the short throw and ultra-short throw projectors is that anyone can use them regardless of their home or movie theater size. 

Common Uses 

As we have already said in the previous point, short-throw projectors are ideal for homes but also for specific areas such as schools, offices, fair stands, churches, etc. 

These projectors are ideal for presentations as presenters will not have to worry about shadows that form when someone passes in front of the device. 

They are widely used in fair stands due to their excellent use in small spaces. Similarly, many people who live in apartments have stopped buying long-range projectors because they are not necessary compared to these. 

These devices are also ideal for business or school presentations. They are crucial in this type of activity as they eliminate the shadow that appears on the screen when someone stands in front of the projector. 

Short Throw Projector Benefits 

  • The most outstanding advantage of this type of projector is that it will allow you to save space. 
  • If you mount this projector close to the ceiling, you will not have problems with annoying shadows on the screen since the light is projected from above. 
  • If you want a short throw projector, this one is cheaper than the ultra-short throw one. 
  • It is more convenient to install and use because the cables will not take up unnecessary space or inconvenience people since it (the projector) will have to be close to the screen. 

Short Throw Projector Disadvantages 

  • These projectors tend to get hotter than others due to the additional processing power in converting rectangular images to trapezoids. 
  • We cannot place this type of projector on an uneven surface as that will distort the projected images. 
  • It has no zoom function.