- Pocket size for your big screen
- Home and business use
- Projection area, distance and contrast
- LCD and DLP projectors
auna mini LED projectors: pocket size for your big screen
Thanks to the development of new technologies and lower costs, video projectors, traditionally used for professional presentations and entertainment on a commercial scale, have become an increasingly popular device in home entertainment systems for enjoying films and other content such as series, sporting events and various programmes with a large, high-resolution image.
In our shop, you can find some models of mini LED projectors with an excellent quality/price ratio. Thanks to their small size and lightweight, our projectors are perfect for use in the home or as portable devices, thanks to their 12-volt power supply, offering extreme versatility. Never owned a projector before and looking for more information on the technical aspects to look out for to find the best model for your needs? Read on to find out what the main differences are in terms of technology and features to look out for. Take advantage of our offers and buy your LED projector directly from our website, with no shipping costs.
Projectors for home or business use
There are two main types of projectors on the market: some for the home and portable led projectors designed specifically for businesses. For home entertainment use, a projector with a 16:9 ratio is recommended, as almost all the content you will consume will be of that size, such as series (or 2.35:1 if we are talking about films). With a 4:3 projector, there will be many black streaks in the films, decreasing the resolution. On the other hand, a 4:3 projector is better for your presentations..
In addition, projectors for working environments need more brightness because they are often used in environments with more light. Other factors to consider are USB connectivity, USB ports, speakers, holes for reverse mounting on the ceiling and an image correction system.
Projection area, minimum distance and contrast
To project the image, ideally, you should use a flat wall with 100% pure white without reflections or an ad hoc surface to project it, be it a rigid screen or a fabric roller - there are also motorised ones. If you use a wall that is not 100% white, you can calibrate the colour to achieve the optimal balance.
Throw Ratio is the minimum distance at which the projector should be positioned and is measured in relation to the image’s width. For example, 1:1 implies that the image is 1 metre wide and that you should position the projector 1 metre away from the wall. 1.5:1 implies that the image is 1 metre wide, and you need to position the projector 1.5 metres away from the wall.
For a 720p projector, a viewing distance of at least 2 metres is recommended. With a 1080p projector, at least 1.5 metres is recommended, while you can position a 4K projector up to 1 metre away. The further away you see it, the better it will appear if the projector's brightness is high.
The contrast of a projector screen is the difference between the brightest white point and the darkest black point. For example, a contrast of 2000:1 means that the brightest dot has 2000 times more light than the darkest dot. Normally, the higher the contrast, the better the image quality. In other words, imagine that the contrast is 2000:1: this means that there are 2000 shades of grey between the whitest white and the blackest black so that the image will be more precise.
LCD and DLP projectors
Modern projectors predominantly use two types of technology: LCD or DLP.
In an LCD (Liquid Crystal Display) projector, just like the panels used in televisions and mobile phones, light is divided into colours when it passes through a liquid crystal panel, allowing a certain amount of light to pass through the filter (specifically, only one-fifth of that generated by the light bulb). Colours with this system are more realistic and better, with excellent brightness.
DLP (Digital Light Processing) projectors, on the other hand, use light reflected by small mirrors that reflect or do not reflect light. For colour, a series of red, green and blue filters are shifted very quickly so that the human eye has the feeling that a colour image is being projected. This system is more compact, offers more sharpness and has better contrast. Still, it also causes some chromatic aberration in the image, making the colour accuracy worse than with an LCD projector. In addition, to generate the grey, the mirror has to rotate in half the time, whereas with an LCD projector, you only need to change the voltage.
Brightness, or ANSI lumens
The projector’s brightness is measured in ANSI lumens, determining how much light a projector can emit. The darker the room, the better, and using an LCD projector, you can get by with 2,000 or 2,500 lumens. With a DLP projector, we have to add about 1,000 more lumens because of the way the technology works, which darkens the image a bit.
If you have windows open at night and some light comes in, you'll need at least 3,000 lumens. For a well-lit meeting room, this should be the minimum, but if you are going to use it outdoors, we recommend a minimum of 4,000 lumens.
And if you are going to use the projector outdoors, we recommend a minimum of 4,000 lumens.
Most projectors feature a VGA connection, which is still used in the corporate sector by older computers. More and more projectors also have an HDMI socket and even HDMI 2.0 in many cases. It is also recommended that they have an audio jack output to output sound coming through HDMI or the native player and USB ports to read files from external storage units.
Sound and noise
Some projectors have built-in speakers, which are very convenient when used as a portable device. These speakers are usually not very powerful but are more than enough to hear decent dialogue from films. In addition, the speakers can help reduce the noise emitted by the projectors. Normally, the smallest projectors make the most noise, as well as affecting brightness. As a rule of thumb, just consider that the more light a projector emits, the more cooling it needs.