Scientists Unveil Lens-Free Camera That Reveals Invisible World in 3D

Breakthrough Camera Technology Captures Invisible World in 3D Without Lenses A team of scientists has developed a revolutionary new camera that can see the invisible in 3D without the need for lenses. The lens-free mid-infrared camera uses a modern twist on pinhole imaging to convert infrared light into visible images, allowing standard sensors to capture sharp, wide-range images without distortion. According to researchers at Optica, the system works by using nonlinear crystals to convert infrared light into visible light, which is then detected by traditional silicon-based camera sensors. This setup allows for clear, wide-depth images to be captured even in extremely low light conditions. The technology also enables precise 3D reconstructions of objects and environments. "We've been able to achieve high-quality imaging without the need for lenses," said Dr. Kun Hua, lead researcher on the project. "This opens up new possibilities for applications such as night vision, industrial inspection, and environmental monitoring." The lens-free camera technology has significant implications for various industries and fields. For instance, it could improve safety by enabling better surveillance in low-light conditions. It also holds promise for industrial inspection, where precise imaging is crucial for quality control. Background research on mid-infrared cameras has been ongoing for several years, but this breakthrough represents a major advancement in the field. Traditional mid-infrared cameras rely on lenses to focus infrared light onto detectors, which can be cumbersome and expensive. The new lens-free camera technology uses laser light to form a tiny optical pinhole inside a nonlinear crystal, effectively converting infrared light into visible light that standard sensors can detect. This setup allows for wide-range imaging without distortion, making it ideal for applications where traditional cameras struggle. While the technology is still in its experimental phase, researchers are optimistic about its potential impact. "This breakthrough has the potential to revolutionize various fields by providing affordable and portable infrared imaging solutions," said Dr. Hua. The next step for the research team will be to refine the technology and explore its applications in real-world settings. With further development, this lens-free camera could become a game-changer for industries and researchers seeking to capture invisible details in 3D without the need for lenses. By: [Your Name] Date: September 26, 2025 Source: Optica *Reporting by Sciencedaily.*