A projector throw ratio (also referred to as the projected image size) is a measurement of how large the picture gets when it leaves the projector. The number is calculated by dividing the width of what you are projecting in inches by height in inches. For example, if you have a 100″ screen and your projector has an 800″ throw ratio, then your projected image will be 8′ wide and 6′ tall.
Projector throw ratio is a measure of the distance from the projector to the screen. It is important because it determines how large your image will be onscreen, and whether or not you need to buy an expensive new projector.
Projectors with a long throw ratio are able to project onto screens significantly larger than those with a short throw ratio. In this article, we’ll discuss what projector throw ratios mean and how they affect your presentations.
What is a Projector Throw Ratio?
The best way to begin answering this question is with an example. Let’s say you are projecting on a screen that is five feet away from the projector (for our purposes, we will call this distance D). The projector throw ratio would be D divided by the width of your image (in other words it would be one-fifth). This means that every time the projector moves one foot away from the screen, your image will get twice as big.
This is because you are doubling the distance. If it was moving towards the screen, then there would be half as much space between every foot of projection; this means that your image size gets cut in half (if you take away one foot from five feet, then two feet will remain).
So, in a short answer, projector throw ratio is the distance between your screen and the projector divided by the image width.
##What does Projector Throw Distance Mean?
If you are looking to buy a projector, then this term is an important one. The throw distance of the projector determines whether or not this device will fit into your room’s setup. This particular spec isn’t always listed on the box, but there are other ways to find it out (for example, reading reviews). If you already have a projector then you can measure the distance between your screen and it. If this number is different from what our article says, make sure to double check with a tape measure or yardstick (if you are measuring in feet).
If you don’t have a long enough throw distance for your projector, there are still some options available to you. For example, if your room doesn’t accommodate rear projection screens that well but front-facing screens work better than nothing at all.
Another option would be leaving bigger distances in between each foot of projected image; this sacrifices resolution though so beware! Also remember that buying an active lens will give more flexibility when trying to get the right projector throw ratio .
So, in a short answer , projector throw distance is the closest point from your screen where your projector will be placed.
If you have any questions then feel free to ask! Whether it’s about projectors or anything else, we are always happy to help 🙂