As the calendar flips, it won’t be long before “Double 11†arrives. The national shopping frenzy is about to kick off, and of course, everyone will be rushing to fill their carts! If you're planning to upgrade your smart projector early this season, this article is essential reading for you. Before you jump into a purchase, as a seasoned projection enthusiast, I want to emphasize: please read this carefully first—because one wrong move could turn your purchase into a long-term regret.
Hidden flaws in smart projectors: "Thermal defocusing" is a widespread issue
Many people may not be familiar with projectors, but they might not know about the common problem known as “thermal defocusing,†often referred to as “running coke.†This issue is considered a natural defect in projectors, especially in smart models, and is recognized globally as an ongoing challenge. But what exactly is “thermal defocusing,†and how does it happen? “Thermal defocusing†occurs after a projector has been running for about 30 minutes. As the internal temperature stabilizes, the lens can slightly deform due to heat, causing the image on the screen to blur. When the light source generates heat, even minor shifts in the lens, barrel, or structure caused by thermal expansion and contraction can lead to blurry images due to focal distance deviation. With larger conventional projectors, this issue is less noticeable and more acceptable. However, for smart mini-projectors, thermal defocusing is a more serious and unavoidable problem. This is because these compact devices are designed with smaller components, and the lens and light source are placed very close together to achieve a sleek look. Most lenses are made from resin materials, which are more prone to thermal expansion and contraction, making the defocusing effect more pronounced. Many users have reported that after using their smart projectors for 10 to 20 minutes, the image becomes blurry and difficult to see clearly, requiring multiple manual refocuses. Imagine trying to enjoy a movie with your family, only to have to get up every few minutes to adjust the focus. It’s an annoying experience! This problem has led many users to complain to manufacturers, who often respond with vague explanations like, “It's a known defect, and the focus is normal.†While some manufacturers have started to address this issue, it remains a major pain point for consumers.
Smart projector before and after thermal defocusing
The issue of thermal defocusing has become a hot topic in the industry, especially with the upcoming Double 11 shopping event. Major smart projector brands are likely to offer various discounts to attract buyers. However, as someone who has experienced the pain of thermal defocusing firsthand, I wanted to raise awareness. After several unsuccessful attempts to communicate with customer service, I published an in-depth article exposing the hidden flaws behind the smart projector market. The article went viral quickly, with over 30,000 reads in just a few hours. Tech media outlets and user groups were buzzing about the issue, and while some supported the findings, others criticized the article, claiming it was biased. I want to clarify that my goal was never to take sides or create conflict. I simply wanted to provide honest information and help consumers make informed decisions. I tested four well-known smart projectors and found that all of them suffered from thermal defocusing. Some required manual adjustment, while others had automatic solutions. When purchasing a smart projector, price shouldn't be the only factor—considering the issue of thermal defocusing is crucial.Dynamic focus technology: say goodbye to thermal defocusing
During my testing, I came across a smart projector that automatically adjusted focus when thermal defocusing occurred. The screen briefly displayed “Focus Adjustment†for a second, then returned to clear image without any manual input. This feature worked consistently throughout the test, eliminating the need to manually refocus during long movie sessions. Curious about the company behind this innovation, I researched further and discovered that it was God Painting Technology, a Shenzhen-based high-tech firm. Over the past decade, they've developed cutting-edge projection technologies such as auto-focus and virtual touch. They’re recognized as a leader in the projection industry, even surpassing some Japanese and Korean companies. Their parent company, Shenhua Technology, partners with Oona Technology Group (HK.00877), a global leader in optical and automation technologies. Their expertise spans fields like Lidar, which is used in autonomous driving systems.Dynamic focus adjustment screen
According to reports, God Painting Technology has spent years solving the thermal defocusing issue. Their “Dynamic Focus Adjustment Technology†offers a fast, accurate, and intelligent solution to automatically correct blurring caused by heat. For most smart projector users, this is a game-changer and a step forward for the industry. I commend the company for addressing a real consumer pain point and investing in meaningful R&D. It's refreshing to see a brand that truly cares about its users. For more information on smart TVs and boxes, visit Smart TV Info Network (http://). A leading platform offering insights, reviews, and support for smart TVs and related technologies.The Composite Insulator are made of glassfiber epoxy core rod, silicone rubber shed and metal fittings.
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