The projector is an optical device that used to display visual objects on a projection screen. During the times, projectors are widely used to support the creation of an entertainment environment that is beyond the eye. Utilization of the projector, among others, is to make a home theater to video mapping that requires adequate projector technology. With the development of technology on the projector, projector performance will also increase. There are three types of technology in projectors to create images, namely DLP, LCD and LcoS. What technology is the best right now?
Digital Light Processing (DLP)
DLP is a technology on projectors that generally only uses one chip, rotating lenses where each lens represents one pixel. Light is emitted through the chip and reflected through a wheel and then projected. These lenses can be activated and vice versa by electronic signals according to color requirements. Although only one color is displayed at a time, because the process is very fast, the main color will look fused into a certain color by the eye.
The disadvantage of DLP technology is that the level of light contrast is lacking and the rainbow effect is an effect that can display flashes of color when the viewer looks at the projection screen from the side. Generally, the best chips can only produce 3000 lumens.For the latest models, DLP technology is able to utilize three chips, one each for red, green and blue. With good color accuracy, clear black and white comparison, projectors with DLP technology are widely used in theaters.
Liquid Crystal Display (LCD)
Technology on the LCD is almost the same as the technology applied to most TVs. Generally LCD has three panels, so it produces brighter light. Initially, the light will pass through a prism that separates the primary color components to the panel. Each of these primary colors red, green, blue becomes a pixel. These three different colors are then combined and finally projected by the LCD so you will see the actual color image. The color accuracy displayed by the LCD will be more varied and sharp compared to the DLP chip.
For the latest models, LCD technology is equipped with special optics that can reduce the screen door effect. LCD contrast ratio can reach 200,000: 1 which is better than DLP which is only 50,000: 1. Another advantage of LCD projectors is that they have a light weight so they can be portable and placement space is easier.
Liquid Crystals on Silicon (LCoS)
LCoS is the latest technology in the projector world. LCoS is a combination of LCD technology and DLP technology. LCD is given as a technology that emits light and DLP that reflects it. The number of pixels in LCoS is relatively large, resulting in high resolution.
At present, most LCoS projectors have a minimum SXGA resolution. With these high pixels it will eliminate flickering, no door screen effect, no rainbow effect and high image quality to project each film. The price offered is quite expensive compared to other projector technologies.
DLP vs LCD vs LCoS
Image quality adjusted for contrast ratio to determine realistic images can be seen. Of course LCD has good performance to get high contrast. DLP has a weakness in the ratio of the very contrast is still below the LCD and LCoS. LCoS itself with a more expensive price has the highest ratio. To outsmart the ratio, in general, the projector has an Auto Iris feature by dimming the compilation of financial conditions so that the contrast ratio can be seen more.
Each projector has a varying level of resolution. LCD and DLP have brighter brightness than LCoS. This technology continues to develop so that competition to produce a level of brightness or brightness is racing tight.
Color accuracy is an object that varies with each projector. There is no technology that challenges color resolution. In general, single chip technology in DLP has more color variations than CLD.
Movement of images into animation or video is a challenge for LCD and LCoS screen technology. DLP projectors will look sharper and more detailed at fast motion. LCD and LCoS outsmart these deficiencies by raising refresh rates like LCD TVs.
The rainbow effect is a color effect on bright objects with a black background. The latest LCD, LCos and DLP projectors no longer have a rainbow effect. For DLP with a single chip, this effect will still be felt and can be seen by most people.
The chip that produces the image on the projector has a very small size of a small object by a chip that can be produced on the screen like color on the edges of a white colored object. Discussing, projectors with three chips that have convergence settings but have not been able to complete the full convergence relationship. DLP with one chip does not need to discuss convergence because it does not need to be combined.
When you want to buy a projector, lumens are the general standard for consideration or reason in choosing the right product for you. The bigger the room, the higher the lumens needed to adjust the lighting needs in the room. Lumens is a unit for measuring the total amount of visible light emitted by a source. Lumens can be said to be the same as brightness so the more lumens, the more light is produced.To outsmart the low lumens, you can make the room become dark so that the projection results are brighter. Avoid the use of walls, but by using a special screen to receive projection light. Use sharp visual input through the computer’s graphics card as well as close the projector’s distance to the projection screen so that the projection results can be seen clearly even though the screen size can be reduced.
Tips for Choosing a Projector
To buy a projector, there are several things that must be considered, namely resolution, weight and brightness. If you want to get a wider projection result and remain sharp, you must pay close attention to the resolution of a projector. For brightness, the more reliable the projector produces brightness, the greater the size of the image that can be displayed. A high amount of lumens will produce a screen that is not gloomy to very bright. The brighter the room, the higher the level of lumens needed. Another factor is the features offered by a projector product, for example the latest technology that supports performance, longer durability to maintenance efficiency.