Smart projection hidden "hot out of focus" defects, all manufacturers can't figure it out
Many people may not be familiar with the projector, but it is very likely that they do not understand the phenomenon of “thermal defocusing,†which is commonly called “running coke.†"The thermal defocus" is called the congenital defect of the projector, especially the intelligent projector, and it is defined as a worldwide problem. So, what exactly is "hot out of focus" and how does it come about?
“Thermal defocusing†refers to the initial stage of the projector that has been working for about half an hour. When the internal temperature and the ambient temperature of the projector gradually reach the thermal equilibrium, the lens undergoes slight deformation due to the temperature change, resulting in the phenomenon of blurred projection screen. When the projector is working, the light machine generates heat, and slight shifts in the lens, lens barrel, and structural parts due to "heat expansion and contraction" will cause the original picture to be blurred due to the focal distance deviation.
With the large conventional projector, the problem of thermal defocusing is still not obvious or acceptable; and the problem of “thermal defocusing†of the intelligent micro projector is that it must face unavoidable. This is because the intelligent mini-projector is smaller in size and the lens and light source are closer to each other in pursuit of stylish appearance. Most lenses of the projection lens are resin materials, and the thermal expansion and contraction are more serious and the thermal defocusing is more prominent.
A very large number of smart projector users once said that the screen of the smart projector became blurry after being played for more than ten minutes to twenty minutes, and the image could not be clearly seen even if it was serious, requiring multiple manual focusing to restore clarity. Imagine popcorn and coke when you're ready. When you and your family are enjoying a Hollywood blockbuster on the sofa, you need to get the coke every 5 minutes. This is a "painful" experience! Users are deeply troubled by “thermal defocusing†and complain and ask for help from merchants. Businesses are also overwhelmed. They tend to perfunctory with the pale explanation that “'hot defocusing' is a congenital defect of the projector and the focus is normal.†.
Intelligent projector before and after the thermal defocus picture contrast
"Thermal out of focus" has become the focus of the industry, online shopping smart micro-mo investment
With the advent of the “Double 11†online shopping event, the major smart projector manufacturers will surely introduce various preferential policies to attract consumers. Because Xiao Bian also pre-empted the majority of smart projector users to experience the pain caused by “heat defocusingâ€, after several exchanges and communication with the merchant’s customer service had no effect, last week published an in-depth article in the entrepreneurship state. - "Exposure: What are the scars hidden behind the hot smart micro-investment market? †The “unspoken rules†of the projector industry are unknown defects - "heat defocus" exposed.
Immediately, the Leifeng.com official website and the "universal big bear" also transmitted the contents of "Entrepreneurship" on their microblogging and micro-signals, exposing the inherent drawbacks of smart projectors, and the amount of readings was rapid in just a few hours. Soaring to more than 30,000; a large number of people from the media circle of science and technology have also been forwarded, each projector user group, the industry group about a bit exploded on the pot, everyone is talking about the "hot out of focus" this scary flaw. Among them, there were some editors who liked it. There were also some manufacturers' representatives who came out and smashed down the street, defaming me to ignore the facts and deliberately discrediting.
Here, Xiao Bian specifically stated that I did not intend to speak for which manufacturer and I did not intend to instigate competition among projection manufacturers. I only had a paranoid love of projection. I did a clean test of the original source, and the consumers also had a fact. , In the "double 11" before the majority of users can provide a purchase reference.
I purchased 4 smart projectors from different brands on the market that are well-known in the market and did a depth test. The fact is that the phenomenon of “thermal defocusing†is well-documented and there are no exceptions! Just some products need to be adjusted manually. Some manufacturers have been able to handle it automatically. When purchasing, friends should not only look at the price, but should consider it more comprehensively, paying special attention to the issue of “heat defocusâ€.
"Dynamic focus adjustment" technology, completely bid farewell to "heat defocus" trouble
In my own test, I discovered that the smart projectors from 4 brands were not involved in the phenomenon of “thermal defocusing!†But one of the projectors was projected when the viewer began to appear “thermally out of focusâ€. The lower left and upper right corners simultaneously flash the “focus adjustment†words. The screen is clearly visible within about 1 second. The entire process does not need to be manually adjusted, and the projector's smart system is used. In the test for an hour or so, several “thermal defocusing†can be automatically and instantly clear. Xiao Bian sees this kind of result is still somewhat happy, after lying on the sofa to watch a movie no longer need to get up a few times to manually focus!
With curiosity, I specifically reviewed the background of this smart projector company. Surprisingly, this company is called God Painting Technology and is a local high-tech enterprise from Shenzhen. During its 10 years of development, it has accumulated a lot of projection black technology, such as auto focus, virtual touch and so on. It is said that it is a recognized black technology leader in the projection circle, and even those big projections of Japan and South Korea can only be ignored.
The brother company of Shenhua Technology and the Hong Kong-listed company Oona Technology Group (HK.00877) are global leading optical technology companies with strong R&D and production capabilities in optical, communications, automation, machine vision and other fields. The world's top technologies such as "Lidar," which are used in driving, are leading the world.
Divine projector dynamic focus adjustment screen
According to the data, Divine Projection has devoted a few years to solving the problem of “thermal defocusingâ€. This time, “Dynamic Focus Adjustment Technology†is based on years of accumulated technology. It is intelligent, fast, and accurate. Thermal defocus" blurring the picture automatically becomes clear. For the majority of smart projector users, the technology that can really solve the problem of common “hot out of focus†in the industry is a gospel. It is also a key step to help the smart projector industry grow stronger and reach more consumer families.
We should do technical research and development for God's painting technology, and congratulate the conscience of the users who seriously solve the pain points.
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