Tell the consumer to judge the quality of rear projection TV Tips
With
Rear Projection
TV prices generally fall, more and more consumers choose to buy rear projection TV, rear projection TV market
Brand
Many
Advertisement
Publicity is also varied, consumers determine the level of quality rear projection TV, manufacturers rely on advertising and
Promotions
Members of the guidance itself does not possess professional knowledge test. And rear-projection TVs within the core material in the product, consumers can not see. Now I will introduce a rear projection TV to judge the quality of tips, consumers can observe the mere visual appearance of rear projection TVs, manufacturers can more accurately determine the level of product quality requirements.
A truly comprehensive test the quality of rear projection TVs require professional testing equipment and personnel, consumers can not do. But the saying goes, "Looking to view the whole picture," rear projection TV manufacturers on product quality of the details can be observed in many products, the following tips that I introduced from the rear projection television screen selection window to determine the rear projection TV the level of quality.
Rear projection TV screen from the window composed of three layers, from inside to outside is a Fresnel lens, cylindrical lens, the protective screen. Consumers see a protective screen. Protection screen on the surface through the optical
Coating
Processed acrylic (PMMA) materials, has three main functions:
1. Anti-scratch: rear-projection TV protective screen behind the cylindrical lens is acrylic materials, but because the surface is the numerous vertical stripe optical coating can not be very easy to scratch, it is necessary after surface hardening of the protective screen for protection.
2. Anti-static: Acrylic materials are insulators, prone to electrostatic attraction of dust, and even lead to electrical failure. Protection through anti-static screen surface coating can prevent the dust cover and prevent static electricity product caused by electrical fault.
3. Glare: Protection screen Surface smooth, if too easily lead to a strong external light reflection, interference with the audience reception of television images of light. Screen coating to protect numerous nanoscale scattering particles, to avoid TV images directly due to external light reflection caused by the discomfort, to ensure the watch more comfortable, more pleasing to the eye.
Understand the function of the protective screen rear projection TV, consumers can protect the screen from observation to determine the level of quality rear projection TV. Rear-projection TVs currently on the market to protect the main selection screen there are three cases:
1. Failed to protect the screen: some manufacturers to reduce production costs, rear projection screen does not install the screen, the very precise and very delicate in the most exposed to the outside cylindrical lens. Have not been hardened acrylic surface material is very easy to scratch, such as a finger or cloth to wipe off the acrylic surface, will leave minor scratches, especially on optical-grade acrylic material. And that the injury is beyond repair, cylindrical lens will cause damage to the display of a serious fault. Determine whether the installation of the screen, consumers can touch the screen surface. If only the cylindrical lens, consumers will find there are numerous vertical screen surface streaks, if the screen, relatively flat surface.
Moreover, manufacturers and promoters will not install the protective screen rear-projection TV as a big selling point for hype. As the cylindrical convex mirror numerous stripes, to avoid the strong reflection of external light, to the effect of glare, so factories of "glare screen" signs posted on the television, promoters also strongly misleading consumers about this kind of quality and price is cheap and "good" model favored by a preferential increase. Buy this TV home, each time the screen with a cloth to wipe dust, will cause great harm on the screen.
2. Protection without glare screen features: rear-projection TV market, middle and low, the surface of the protective screen is not glare coating, at home, watching this TV, will be inside
Light
Reflection effects, television screen
Color
And clarity were seriously affected. Consumers to judge whether the glare screen protection function, the TV should be shut down, standing in front of the TV, observing his own shadow, if the figure is very clear, and even can see the facial contours, indicating that there is no glare screen protection function.
3. Glare Screen protection: anti-glare screen protection is also used to judge figure observation. Market glare protection screen quality with high and low to figure observe the law, it is some brand protection screen TV is not quite clear although the figure, but because the nano-coating technology tests, the external light reflection on the elimination of interference effects is not very good Through observation and comparison, consumers can more easily make judgments.
The above three cases, there are a number of other conditions, such as protection of the ordinary advertising screen material with acrylic, not only did not glare function, or even scratch-resistant, anti-static function; protection screen with steel
Glass
There burst of security risks.
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