Since the third quarter of 2017, the 4K projector market has started to take off. Brands such as Optoma, BenQ, Acer, and Sony have launched a range of 4K product lines, with many entry-level home projectors priced under 200 million yuan, making 4K more accessible to consumers. This surge in availability has significantly expanded the market’s supply of 4K solutions. However, at the beginning of the 4K adoption phase, many users, like Dapingjun, are still considering the best way to utilize this technology.
The core of 4K projection lies in its higher pixel count, which opens up two main application directions. First, using more pixels to maintain the same display size but deliver sharper and more detailed images. Second, keeping the same image quality while increasing the screen size. These two approaches reflect the current trends in 4K usage.
In the engineering sector, both high and low brightness 4K projectors have emerged. NEC’s dual-color 4K laser projectors and Sony’s laser-based digital cinema projectors have made significant improvements in brightness. For projectors, brightness is a key factor that defines their performance limits. Dapingjun believes that higher brightness is ideal for brighter environments or large-screen displays, where it can replace multiple older projectors. For instance, NEC’s PH3501QL+ and PH2601QL+ offer 35,000 and 26,000 lumens respectively, while Sony’s SRX-R810DS and SRX-R815DS systems reach 15,000 and 30,000 lumens—some of the highest brightness values in the industry. With such brightness, 4K projectors can achieve the same image quality as previous 2–4 projectors, making them a strong candidate for large-scale applications.
On the other hand, some 4K projectors don’t focus on brightness. For example, BenQ and Optoma’s 5,000-lumen entry-level engineering projectors, or Sony’s 7,500-lumen SRX-R810P, target different markets. Their goal is not to create larger screens, but to provide high-resolution, high-quality imaging suitable for virtual simulation, precision display, and other specialized fields. This represents another high-end application direction of 4K.
In the home market, the situation is more complex. Unlike the engineering world, consumer 4K projectors face multiple challenges, including content scarcity and cost concerns. Products like Hisense’s 88-inch 4K laser TV aim to enhance the display performance of large TVs, while the 140-inch model targets high-quality visuals. However, most traditional home projectors still rely on brightness levels between 2,000 and 3,500 lumens, which are ideal for 100–120-inch screens. These products cater to consumers who want better image quality than 2K offers.
Despite this, Dapingjun remains skeptical about the value of 4K for improving picture quality alone. He points out three main reasons: 2K already delivers good results on 120-inch screens, there’s a lack of 4K content, and future alternatives may be cheaper and better. Additionally, many 4K home projectors still use traditional light sources, which are not aligned with the industry's move toward solid-state and laser technologies.
In summary, whether for engineering or home use, 4K projectors are positioned as premium options, either for larger screens or more detailed visuals. But no matter the application, content remains a critical bottleneck. The production, processing, and distribution of 4K content require significant resources and time. While new compression algorithms and faster data transmission are helping, the full adoption of 4K will still take years.
Looking back at the history of resolution standards, from 480p to 1080p, the transition has always been gradual. Lower-resolution products often survive due to lower costs. This trend is also evident in 4K, which has yet to make a major impact in commercial and educational settings due to price sensitivity.
Thus, even if 4K content becomes abundant and prices drop, it won’t dominate the market in the short term. Instead, 4K will remain a top-tier solution, while 2K and below will continue to serve the majority of users. For 4K to succeed, it needs not just technological support but also economic viability.
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