Throw ratio simply refers to the distance between a projector and the screen and is worked out using the following formula:ĭistance (D) divided by image size (S) equals the Throw Ratio (T)ĭepending on your distance, there are a few different types of projector you can choose from: In order to create the right image size, you’ll need to properly calculate your throw distance to figure out the model you need, along with where you’re going to put the projector itself. Typically, if you’re looking for a great picture for outdoor viewing, a good brightness for a projector is around 2000-3000 lumens, but this does depend on a number of other factors such as the brightness of the sun and the quality of your screen. If a projector has a low number of lumens, you’d only be able to see the image in a dark room as any other light sources would make it very hard to see. This is because, the more lumens, and therefore the brighter the image, the less affected by ambient light your image will be. Measured in ANSI lumens, projector brightness is key if you want to be able to see your image clearly. When it comes to purchasing the right LED projector for you, there are a number of things to bear in mind: Brightness: Unlike a typical lamp-based projector, which uses coloured filters, or colour wheels to generate colour, in an LED projector, a combination of red, green and blue LED bulbs are used to create a white light that is then filtered through the lens to form an image on the screen. It works by shining and filtering light through a small, transparent lens, and projecting this onto a screen. A projector is simply a technological device that is used to project an image from a computer, TV or gaming system onto a screen. So, how does an LED projector work?īefore we discuss exactly how an LED projector works, first we must understand projectors in general. But, how does it work? From the specifications to the pros and cons, we explain all. From movie theatres to boardrooms, classrooms to your very own home, a projector is a super versatile piece of kit. Have you ever been to the movies and found yourself wondering exactly how the images are shown on the screen? The answer is a projector.
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