HD projectorhave been used very successfully for decades in our recreational activities. Film enthusiasts use high quality HD video projector such as B. the Full HD video projector 1080P ELEGIANT projector to set up a private cinema in your own home, while gamers with a high quality HD video projector explore the game worlds even better.

Development history of modern HD video projector

modern HD video projector differ from each other primarily by the applied projection method. The first beamer available on the consumer market was based on the Eidophor system. This outdated procedure made it possible to reproduce high-speed images in a quite high resolution at the time. These projectors were the gold standard until the late ’80s and were hugely popular with tech enthusiasts. The next stage of development was tube projectors, whose characteristic feature was a very high brightness. Just like Eidophor system projectors, the tube projectors were very popular in the professional as well as in the semi-professional field. To represent the full color spectrum, the tube projectors used three tubes, one tube for each base color. In the early 2000s, several new projector models were presented, which were based on very different technologies and functionalities. Over the years, two technologies have emerged that are now common to most projector models, namely LCD (Liquid Crystal Display) and DSP (Digital Light Processing) technology.

Modern HD LCD projector

The LCD technology used in modern HD projectors is based on a clever principle. The white light of the projector lamp is divided into the three basic colors red, blue and green by means of a prism and then passed through three small LCD screens. By using a second prism, the color image is then assembled. The LCD technology is nowadays mainly used for low-cost HD beaming. HD LCD projectors are extremely robust and have a long life, which has allowed them to establish themselves over the years, especially in the semi-professional field. The main advantage of LCD technology is the high contrast of the display, which even shows subtle color gradations of dark and light tones without any deterioration of image quality due to artifacts. Although the majority of modern HD projectors rely on LCD technology, this technology also has some disadvantages. So z. For example, black is not as rich and rich in color as HD projectors based on DLP technology.

High contrast and sharp images with DLP technology

DLP technology uses millions of tiny mirrors that project the image onto the screen. The heart of a modern DLP projector is a small color wheel, which splits the light into the individual primary colors and then transports them to the canvas. A flip side of this technology is the rainbow effect, which makes the basic colors red, blue and green visible on the screen for a few milliseconds. This can happen when the viewer’s eyes are out of sync with the movement of the object on the screen. Thanks to the high frame rate, the DLP technology is optimally suited for fast scenes and 3D projections. DLP projectoralso offer a number of different benefits. So z. For example, DLP technology is not prone to image burn-in, which makes DLP projectors ideal for projecting digital photography. Unlike LCD projectors, DLP projectors are able to produce a richer and more contrasty black, and with the latest DLP models, the pixel texture is less pronounced, making the projected image sharper and clearer.

Important quality features of a HD projector

When purchasing a HD projector, there are some criteria and factors to consider that have a huge impact on image quality. An important criterion for the display quality is the brightness or luminosity with which the image is projected. Most HD projector models for private and professional use, are provided with a luminous intensity of 1000 to 5000 lumens. The actual usable light intensity is usually below the specification of the technical values. The details are often artificially polished and usually contain tolerances of 10 – 20 percent. Another important quality feature is the projection ratio, which is the ratio between the projection distance and the image size. High-quality HD projectors also allow to regulate keystone distortion by adjusting the lens. Keystone distortion occurs when the HD Beamer does not project parallel to a screen.