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Is there a difference between a projector and a projector? -Alice

December 04, 2021

There are still differences between projectors and projectors. Although they are not big, they are like water heaters, but there are differences between gas water heaters and solar water heaters. Let's talk in detail below;

Projector

With the development of computer multimedia display technology, the projector, as the best large-screen display device, has also become a standard computer peripheral product from the early advanced product in the AV field, and is widely used in education, military, business and other fields. In the past two years, the projector market has developed rapidly and has become a hot spot for growth among many IT products.

The demand of the market drives the progress and development of technology. The early CRT display technology has now fallen in the field of projection. At present, the traditional LCD (Liquid Cristal Display) liquid crystal display technology and the emerging DLP (Digital Light Processor) digital light output display technology dominate the market.

LCD projectors include liquid crystal light valve projectors and liquid crystal panel projectors. The former is rarely seen in the market. The liquid crystal projectors mentioned now generally refer to the use of liquid crystal panels as imaging devices, using the photoelectric effect of liquid crystals, that is, liquid crystal molecules. The arrangement changes under the action of an electric field, which affects the transmittance or reflectivity of the liquid crystal cell, thereby affecting its optical properties, and producing images with different gray levels and colors. LCD technology has always been one of the key display technologies in the projection field, and products based on LCD technology also occupy a considerable proportion of the market. However, for the three-chip LCD projectors currently widely used in the market, it is difficult to accurately converge the three colors of light. At the same time, problems such as low light transmittance and LCD panel life brought by the LCD structure itself restrict the further development of LCD projectors to a certain extent.

projector

CRT is the abbreviation of Cathobe Ray Tube, which is the earliest and most widely used projection technology, and its technical characteristics are basically the same as the well-known CRT display. The advantages of CRT projectors are that the displayed image has rich colors, good reproducibility, and rich geometric distortion adjustment capabilities. However, CRT projectors are complicated to operate, especially the convergence adjustment is cumbersome, and the projector is large in size, so it is only suitable for installation in relatively fixed places with weak ambient light, such as conference centers, auditoriums, large entertainment venues and occasions that require real-time monitoring. In addition, CRT projectors must be installed and adjusted by well-trained professionals. At the same time, CRT projectors are expensive and cannot be afforded by ordinary units. Therefore, under the market offensive of new projectors such as LCD and DLP, the market share of CRT projectors has been declining year by year, and there is a further downward trend.

LCD projectors are divided into two types: liquid crystal panel projectors and liquid crystal light valve projectors. The imaging device of the liquid crystal panel projector is a liquid crystal panel, which is a passive projection method that mainly uses external light sources, metal halide lamps or UHP (cold light sources) to produce projected images. According to the difference in the number of LCD panels, LCD panel projectors can be divided into three-panel projectors and single-panel projectors. At present, the three-panel projector occupies an important position in the LCD panel projector. The single-chip LCD projector is characterized by small size, light weight, very convenient operation and portability, and relatively low price. However, its light source life is very short, the color is not very uniform, and the resolution is also very low. However, with technology With the continuous progress of the monolithic LCD panel projector, these shortcomings are gradually being improved, so the market prospects are beginning to be optimistic.

[Disclaimer: The above content is sourced from the Internet and does not represent the views of this site. I hope some of the content can help you. 】


We (Alice) are a manufacturer specializing in the production of nameplates for office appliances. We have 21 years of experience in making furniture signs. We can produce zinc alloy, aluminum alloy, stainless steel, copper, brass, iron, and titanium. , PC, PET, PE, pvc and other different labels.

Contact us E-mail: sales03@alicelogo.com

WhatsApp: +86 132 6564 6796

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