
When it comes to low-light cameras, people often think of infrared cameras. While infrared cameras are popular, their current market situation is concerning. Many defective products are flooding the market, and reputable surveillance camera manufacturers are struggling against those who cut corners on quality. In many night vision systems, infrared cameras play a crucial role, especially in environments where lighting conditions aren’t particularly demanding. They might seem useful, but in reality, the production threshold for infrared cameras isn’t particularly high.
Since the inception of infrared cameras, manufacturers haven’t had to employ any groundbreaking or complex technology. Moreover, the current accessories market offers a variety of components catering to surveillance camera makers at various levels. This has facilitated the widespread adoption of infrared cameras. Consequently, numerous surveillance camera manufacturers have proliferated like spring bamboo shoots.
These production facilities seem to prioritize profit over quality. As a result, cheap products often come with subpar quality and eventually flood the legitimate market. Visiting the security product market today reveals a chaotic scene where every product competes for attention. On the surface, this appears beneficial for the overall growth of the security industry, but beneath this facade lies a reality of inconsistent quality. The coexistence of high-quality, reasonably priced products alongside low-quality, shoddy ones has created a confusing marketplace.
For established surveillance camera manufacturers, facing such unexpected competition is challenging. They struggle to find a reliable foundation to stand on amidst multiple pressures. To protect their market share, even their commitment to quality has quietly diminished. As consumers, we’re left with little choice but to accept the current state of affairs.
The absence of industry standards is a major contributor to this chaos. Surveillance camera manufacturers have been in China for over two decades, yet shockingly, there’s still no unified standard to regulate the industry. Under such circumstances, maintaining a healthy market environment is nearly impossible.
Currently, in the realm of security monitoring, the only relevant standard comes from the Ministry of Public Security’s Security Supervision and Alarm System Product Quality Supervision, Inspection, and Testing Center. Their measurement method for cameras can be applied to security monitoring products. However, this standard, first introduced in 1995, focuses primarily on aspects like resolution and durability. It’s no longer adequate for today’s needs.
Thus, the lack of standards leads to misleading marketing claims, short product lifespans, and poor image quality. Many of us have grown accustomed to these issues without realizing that the short lifespan of infrared cameras is due to flawed designs or poor manufacturing practices.
Regarding infrared cameras and their everyday applications: Human eyes can perceive visible light ranging from red to violet, with shorter wavelengths like ultraviolet and longer wavelengths like infrared lying beyond our sight. Digital cameras use CCD sensors to capture all types of light, which results in images that differ significantly from what we see with the naked eye. To address this, digital cameras include an infrared filter between the lens and the CCD. This filter blocks infrared light from reaching the CCD, ensuring that the CCD only captures visible light, aligning the recorded footage with what we see naturally. Most infrared cameras today utilize LED infrared light-emitting diodes as their primary component.
On the Chinese market, infrared cameras predominantly rely on infrared filters to switch between day and night modes. During the day, the filter blocks infrared light from reaching the CCD, allowing only visible light to pass through. At night or in low-light situations, the filter ceases operation, enabling infrared light to enter the CCD. Infrared light reflects off objects and enters the lens for imaging.
However, in practice, infrared cameras often produce sharp daytime images but become blurry under infrared lighting. This happens because visible light and infrared light have different wavelengths, leading to distinct focal planes and resulting in virtual focus and screen blurriness. IR lenses employ advanced optical design techniques, special optical glass materials, and cutting-edge film technologies to eliminate the shift in focal planes between visible light and infrared light.
Conclusion:
Surveillance camera manufacturers are currently at a critical juncture in their development. With users losing patience, how can these manufacturers improve their standing? This is undoubtedly a pressing issue for producers and managers to address. After all, when the majority of users lose faith in a product, it signifies the product's failure. The future of this industry depends on whether manufacturers can uphold quality and innovation.