What is the difference between Long, Short and Ultra Short Projectors
What makes Ultra Short Projectors different from normal projectors is the Throw Ratio value. There are 3 different types of projectors based on the Throw Ratio, these are Long or Standard Throw Projectors, Short Throw Projectors and Ultra Short Throw Projectors. The difference between these three types of projectors is basically the Throw Ratio of the projector as explained below.
What is the Throw Ratio of a Projector?
The Throw Ratio of a projector is defined as the value you get when you divide the distance the projector is placed from the screen (Throw distance) divided by the screen size (measured diagonally) of the projected image. Thus if the projector has to be placed at least 12 feet away from the screen to get a 10 feet screen size (diagonally), then we say the Throw Ratio of the projector is 12/10 = 1.20
How Projectors classified as Standard, Short and Ultra Short Projector
There are no hard and fast rules regarding how a projector is classified as long / standard throw, short throw and ultra short throw projector. I did a lot of research to find some authoritative rules regarding such a classification, but was unable to find any. My findings indicate that the general consensus is that a projector with a throw ratio of 0.75 and above will be classified as a normal or standard throw projector, projectors with a throw ratio of 0.5 and less will be classified as a short throw projector and any projector which only needs to be placed less than a foot from the screen to produce an image of diagonal sizes from 90 inch upwards to be classified as an Ultra short throw projector.
Why Short and Ultra Short Projector expensive
What makes a projector long, short and ultra short is the lens of the projector. This is similar to the normal, wide angle and Zoom lenses of a camera. In projectors the smaller the throw ratio, the more expensive it becomes. In projectors, the closer the projector gets to the screen, the wider the projector lens needs to be. In cameras we know the fish eye effects wide angle lens. So in projectors, the wider the lens becomes, image distortions like fish eye effect creeps in. So projector manufacturers have to have costlier lenses and may even have to have digital processing of the image to correct distortion artifacts of wide angle lenses. This obviously leads to more expenses. In short, projectors get more expensive the shorter the throw ratio.
There is a limit to how wide the lens of a projector can get. No normal type projector lens is able to directly produce big images on the wall screen with the projector placed only inches from the wall as in an Ultra Short Throw projector. So for Ultra Short Projectors, projector manufacturers have come up with ingenious reflective technology using mirrors and mirror lenses to achieve this. This involves a lot of complex technology and makes Ultra Short Throw projectors very expensive.
How reliable is an Ultra Short Projector
Reliability of Ultra Short Projectors is one of the main concerns of buyers of expensive Ultra Short Projectors. On Googling, there seems to be no reports of reliability issues or problems with Ultra Short Projectors. It is hard to believe that there are no reports of problems in such a complex piece of equipment with mirrors which may gather dust and make it dim, or the requirements of such fine internal focus in the light path which is not disturbed by vibration or jerks during transit. This means that Ultra Short Throw Projectors are built tough and are very reliable projectors. Most Ultra Short projectors produced from the year 2020 are all 4K Ultra Short Projectors. To know and compare the prices of all Ultra Short Projectors there is no better place than the Amazon.com pages showing all the latest 4K Ultra Short Throw Projectors - https://amzn.to/3hxgPQ3
Where to buy Home Theater Projectors and Projector Screens online
The best place to buy Projectors and Projector screens is the Amazon online store in your country. Amazon is best to buy online Projectors and Screens because not only are they very competitively priced, but you also have the assurance of service, and in the worst case, even return for a refund in case you are not satisfied.
Links for Home Theater Projectors
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Links for Projector Screens
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