Visible light imaging is a family of methods that acquire spatially resolved information using electromagnetic radiation in the 400–700 nm range, detected by human-vision–matched sensors such as CCD or CMOS arrays. It encompasses bright-field microscopy, color and monochrome photography, and machine-vision systems that rely on reflected, transmitted, or emitted visible photons to generate contrast based on absorption, scattering, and fluorescence within this spectral band. These methods are widely used for noninvasive inspection, documentation, and quantitative analysis, often combined with controlled illumination, optical filters, and computational processing to enhance signal-to-noise ratio, extract morphological or spectral features, and enable automated measurement or classification.
Quantitative phase imaging (QPI) is a microscopy technique widely used to investigate cells. Even though earlier biomedical applications based on QPI have been developed, both acquisition speed and image quality need to improve ...
Optics & Photonics
Mar 3, 2025
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In a recent study, researchers developed a portable digital holographic camera system that can obtain full-color digital holograms of objects illuminated with spatially and temporally incoherent light in a single exposure. ...
Optics & Photonics
Feb 18, 2025
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Collaboration can be a beautiful thing, especially when people work together to create something new. Take, for example, a longstanding collaboration between Arka Majumdar, a University of Washington (UW) professor of electrical ...
Optics & Photonics
Feb 5, 2025
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Mounted on a robotic arm attached to a 33-m long rail, a camera system is brought closer and closer to this scale-model satellite, recreating the experience of a rendezvous in space.
Space Exploration
Jan 27, 2025
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NASA's Mars Reconnaissance Orbiter (MRO) caught a glimpse of the agency's retired InSight lander recently, documenting the accumulation of dust on the spacecraft's solar panels. In the new image taken Oct. 23 by MRO's High-Resolution ...
Planetary Sciences
Dec 16, 2024
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A research team led by Prof. Zhang Ze from the Aerospace Information Research Institute (AIR) of the Chinese Academy of Sciences has developed a hyper-sampling imaging (HSI) technology that enhances the image quality and ...
Optics & Photonics
Dec 2, 2024
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A team from The Hebrew University of Jerusalem has introduced a new method for megapixel-scale fluorescence microscopy through complex scattering media. This approach resolves high-resolution images from several tens of widefield ...
Optics & Photonics
Nov 20, 2024
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Modern imaging systems, such as those used in smartphones, virtual reality (VR), and augmented reality (AR) devices, are constantly evolving to become more compact, efficient, and high-performing. Traditional optical systems ...
Optics & Photonics
Nov 15, 2024
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Earth's city lights streak by in this long-exposure photo taken by NASA astronaut Don Pettit on Oct. 24, 2024. The green glow of Earth's atmosphere is also visible on the horizon.
Space Exploration
Nov 7, 2024
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89
Scientists have taken inspiration from the way sunlight passes through clouds to discover an entirely new way of controlling and guiding light.
Optics & Photonics
Nov 1, 2024
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