Uneven quality projector market need standards – the projector, quality, missing – office supplies industry
Recently, the China Electronic Chamber of Commerce Joint Electronics Standardization Institute of the Ministry of Information Industry Projector Market quality monitoring showed that the relevant national standards because the lack of projector products on the market parameters prevailing vacuity, standby power consumption is too high, the problem of varying quality.
Ministry of digital TV standards compliance testing center projector test project leader Hu Peng told reporters that 4-6 months of this year, Electronic Standardization Institute of the market, Sony, Epson, Lenovo, Toshiba, Hitachi, Canon, Changhong, 17 brands, LCD (liquid crystal), DLP (light display), LCOS (reflective ceramic) are three types of nearly 40 mainstream projector LCD projector product reference standard of the existing open, fair thoroughly test. Generally speaking, in addition to clarity indicators, other
Recently, the China Electronic Chamber of Commerce, Ministry of Information Industry jointly Electronics Standardization Institute of the projector market quality monitoring showed that the relevant national standards because the lack of projector products on the market parameters prevailing vacuity, standby power consumption is too high, the problem of varying quality.
Ministry of digital TV standards compliance testing center projector test project leader Hu Peng told reporters that 4-6 months of this year, Electronic Standardization Institute of the market, Sony, Epson, Lenovo, Toshiba, Hitachi, Canon, Changhong, 17 brands, LCD (liquid crystal), DLP (light display), LCOS (reflective ceramic) are three types of nearly 40 mainstream projector LCD projector product reference standard of the existing open, fair thoroughly test. Generally speaking, in addition to clarity index, other indicators are there are some false standard questions: The first detection of light output indicators
value, most of the company's products measured gap between the nominal value of less than 20% of basic, standard requirements, but there are a few indicators of enterprise product light output lower than the nominal value of 50%.
Second, the detection of contrast found in many products, there are serious underlying conditions of virtual. DLP projector in particular, the most obvious. LCD projector contrast enterprises generally 400:1-600:1 between nominal value, the actual test value generally between the 100:1-300:1, of which 63.6% of the products can meet the standard requirements of more than 150:1 ; DLP projector nominal 2000:1-2500:1 contrast, the actual detection value is generally between 100:1-500:1, 88.9% of which can reach more than 150:1. Most of the nominal value and the company follows the ISO21118 standard (the Japanese standard), in black in white mode, test data obtained, but not under normal circumstances the user is almost entirely white state in total darkness to use the projector. According to reports, the test uses a more scientific method of 4 black one white, that is used in normal mode the user to test the projector's contrast.
Hu Peng told reporters discovered through testing, projector product ideal machine power test results, all test products, testing only a power greater than nominal value. But in the standby power consumption, the overall situation is not satisfactory, 70% of the products is greater than the national regulations standby power 5 watts. In addition, test results from the point of view, there are more working noise problems in all the test products, 55% of the products of work set by the state noise is greater than 36 db (A).
Inspection also found that, at this stage of the projector color performance products in general is not ideal, uniform illumination performance up to 80%, 32% color gamut coverage of the above products in only 25% of all tested products, Sony , Lenovo, Epson projector products in these two indicators perform well, but the poor performance of individual products, including the evenness of illumination test a product than the nominal value of 20 percentage points lower. It is noteworthy that in the testing also found a more serious problem is that part of the nominal parameters of projector product specification incomplete. The description is hard to find some of the basic parameters of the nominal value of the product. To purchase these products so consumers can view the products from the relevant site specific parameters, but the current parameters of the nominal part of the site there is a big water consumers simply were unable to identify whether there exists a standard product, and this also greatly increased the chances of consumers being taken.
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