the essentials in brief
A projector that excels in color reproduction, Resolution, contrast and brightness performs well.
Note: The distance should be twice the screen width. More information can be found here.
Projectors that work during the day must have high brightness. Brands like Epson, Optoma and BenQ are suitable for this. More information here.
In the age of digital technologies, it is not surprising that the presentation world has also evolved. The classic overhead projectors have been out for a long time - instead, more and more people are using projectors. These are compact and powerful devices that deliver an excellent picture. Here you can find out what a projector is, what types there are, how it works and what you have to consider when using it.
Contents
types of projectors
What is a projector actually?
A projector is an electronic device that can be used to project images and videos onto a large screen or other surface. The abbreviation "Beamer" comes from the English and means "projector".
Projectors will usually into three different categories assigned: DLP, LCD and LEDs. Most use one Combination of these three technologies.
- DLP projectors use a DLP chip to control the light that shines through the device. This chip reflects the light and creates an image on the screen. DLP projectors are usually smaller and lighter than LCD or LED projectors and produce a very sharp image. However, they are more prone to ghosting (image trailing) when displaying moving images.
- LCD projector use LCD panels to control the light. These panels reflect or transmit light to create an image on the screen. LCD projectors tend to be larger and heavier than DLP projectors and produce a less sharp image. However, they are less prone to ghosting effects.
- LED projector use LEDs (light emitting diodes) instead of incandescent bulbs to control the light that shines through the projector. These LEDs reflect the light and create an image on the screen. LED projectors are usually smaller and lighter than LCD or DLP projectors and produce a very sharp image. However, they are more prone to ghosting effects.
Functions of projectors
Projectors will usually for presenting information on a screen or other large screen used. However, you can also for other purposes be used, for example, for playing videos or for projecting images onto a Wall.
Projectors can either connected to a laptop or desktop computer. Most have one HDMI port, which allows them to be connected to a computer. Projectors can also have a VGA connection connected, but this is usually not the best choice as the picture quality is not as good.
Most projectors have one built-in lamp, which creates the light that is projected onto the screen or screen. However, the lamps in projectors can vary in strength.
What does that mean? This means that some projectors are better suited for use in low-light rooms, while others are better suited for use in high-light rooms.
Projectors can too different sized be. Smaller projectors tend to be easier to transport, but they also have a smaller image size. Larger projectors tend to be more difficult to transport, but they also have larger image sizes.
Do projectors work in daylight?
Spoiler Alert: Yes. However, there are a few things to keep in mind with these devices. Above all: A projector that also works well in daylight should have a high brightness feature.
Note: The brightness of a projector is measured in lumens, and the higher the lumen value, the brighter the projected image.
Recommended for use in daylight Projector with a brightness of at least 2000 lumens. However, most modern projectors offer even higher brightness, such as 3000 lumens or more. Among the recommended projectors, which also work well in daylight, are Epson, Optoma and BenQ branded models. These all offer high brightness and are therefore well suited for use in daylight.
Use a projector – but properly!
How far does a projector have to be from the wall?
The projection distance depends on the type of projector and the size of the imageto be projected. Every projector has a minimum and maximum projection distance. This is usually stated in the product description. In order to calculate the optimal projection distance, you must above all know the width of the screen.
Usually it says: The distance between the projector and the screen should be twice the size of the screen. For example, if you have a screen that is one meter wide, the distance should be at least two meters.
Small side note: Most manufacturers offer online projection calculators that you can use to calculate the optimal projection distance based on these factors.
Note: Too short or too long a projection distance can cause the image to appear blurry or distorted. So it is important to find the optimal projection distance to get a clear and sharp image.
picture quality
What does image quality depend on?
The quality of a projector is first and foremost depends on the Resolution.
Note: Most have a native resolution of 1920×1080 pixels. This resolution is sufficient for most applications, such as presentations or videos. However, there are also high-resolution models with a resolution of 3840×2160 pixels. However, these projectors tend to be more expensive.
The quality of a projector is also depending on the brightness. As discussed in the previous section, most projectors have a brightness of 2000-3000 lumens. This brightness is sufficient for most purposes, including working during the day. However, there are also brightness projectors with a brightness of 5000 lumens or more.
Last is the quality too depending on the contrast rate.
Note: Most projectors have a contrast ratio of 2000:1. If you want a projector with a higher quality contrast ratio, look for models with a ratio of 100000:1.
Home theater vs. presentations
What are the advantages of home cinema projectors?
- Home theater projectors tend to be more powerful than normal projectors and have a higher resolution.
- You are also able to get one display a wider range of colors, resulting in a more realistic and vivid picture.
- Another key difference is that home theater projectors have one higher contrast ratio exhibit. This means they are able to better reproduce darker areas of the image, making for a more realistic and deeper image.
Note: So if you need a projector that is mainly intended for displaying presentations, it is not necessary to use a home cinema projector for it.
Do you want to buy a projector?
If you want to buy a projector, there are a few important factors to consider. Below:
- the resolution
- the brightness
- the contrast
- the color rendering
Yes, but… why actually?
- A good projector should therefore have a high resolution so that Image sharp and clear at a hunt.
- In addition, it should therefore have a high level of brightness so that you can See the image well even in bright light conditions can.
- Furthermore, they should Colors natural and vibrant reproduced, so color reproduction is an important consideration.
- And finally: A good projector should have a large projection area so that you can Picture even in large rooms can see well.
Tip: In order to get the best picture, it is recommended to use a projector with a high resolution, such as Full-HD or even 4K to choose from.
In short: the projector
Good projectors are an indispensable tool for business presentations, training courses and video conferences. They project an image onto a screen or other surface so you can share your presentation with a group.
Projectors come in different sizes and with different functions.
Which one is right for you depends on the nature of your presentation and the number of participants. They are also well suited for use in the private sector. So if you often movie nights organize, a good projector can also be the right choice for you.
FAQ about projectors
The 16:9 format is best suited, since presentations can be shown well in this way, and feature films can also be ideally played on a screen.
Most projectors have built-in ones Loudspeakers. These are usually of high quality. However, if the focus is on sound, you should consider separate Loudspeakers zu kaufen.
There is no real price limit for these devices. However, almost all models are relatively expensive. It is possible to get a very good projector for under 1000 euros. However, many models are even more expensive.