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photography  infrared  lens  recommendations 
5 weeks ago by kger
Wearable MRI
Using sound somehow to redirect infrared light to allow internal imaging like an MRI. Uses some sort of holographic imaging technique.
infrared  IR  optical  scanning  MRI  medicine  health  portable  hardware  electronics  devices  holographic  imaing  sound  focus  optics 
8 weeks ago by asteroza
Necsus | Beyond human vision: Towards an archaeology of infrared images
the infrared images produced by night vision goggles – of a spectral and seemingly de-realising nature – allow the human eye to see layers of visibility that would otherwise remain inaccessible.[8] Infrared makes it possible to gain a more detailed and in-depth knowledge of reality. In this regard, in addition to the subject of digital technology, infrared also entails that of resolution – or more precisely – what may be defined as the images’ resolution capacity. While infrared images seem to spring from the physiological limitations of human vision, they also show the ability to overcome these limitations through the use of apparatuses and devices. The images appear to lack information and data, especially when compared to the high resolution of daytime vision (both human and mechanical), yet, at the same time, they are able to push vision beyond human limitations. Infrared images are the result of the inability to see with the naked eye and the ability to see the invisible, bringing about a very unique interaction between human vision and mechanical vision and, in turn, between their varying resolution capacities. ...

infrared images are a chapter still very much to be written within that set of practices that Thomas Elsaesser defined through the formula of the three S/Ms: surveillance and military applications; surgery and medicine; and sensoring and monitoring.[12] As we shall see, the history of infrared appears to be intimately connected to this triple set of visual practices. Based on the premise briefly introduced above, this article aims to outline what may be defined as an ‘archaeology of digital infrared’. ...

In the early 1900s, Robert W. Wood patented the first near infrared-sensitive photographic emulsions, which aimed to make what is invisible to the human eye visible. Wood presents the results of his research in several articles, where he also published the earliest examples of infrared photography.[26] These were soon distributed within the press of the time,[27] paving the way for the emergence of a new type of imagery. Infrared made it possible to achieve several interesting effects, especially in landscape photography: ‘some of these photographs are interesting by reason of their resemblance to winter landscapes’.[28] The overall effect of the images is a brightness and black-and-white contrast that would not otherwise be visible to the naked eye....

As such, attention was drawn to infrared’s ability to reveal aspects of the sensitive world beyond the limitations of human vision. The history of infrared is also intertwined with that of parapsychology – which studies psychic energy and mediumship in particular – and with the tradition of thought photography....

Infrared photography immediately proved useful in the military field for various purposes which, in the decades that followed, went on to be developed through increasingly complex technology for night vision, air reconnaissance, territory tracking, and missiles. Infrared was primarily used as a tool to achieve extremely clear views, including at long distance, thanks to radiation’s ability to penetrate through haze. ....

With regard to camouflage detection, the use of infrared served as a tool for both direct observation and conventional photography. The previously used method was based on the principle of ‘before and after’, whereby photographs taken at different times were examined through a stereoscope to identify differences. Infrared was particularly effective for exploring the simulation effects of natural foliage and grass achieved with objects and surfaces painted with the same colour...

Infrared is used to access and reveal a layer of reality that is inaccessible to human sensitivity and, therefore, that serves as a mechanical extension of the human gaze. In this regard, it has been used as a medium (even in the esoteric meaning of the word) to extend and expand our sensory and mental faculties through the mechanics of optical and photographic technology. These faculties paved the way for the potential use of infrared technologies as tools to support military devices, control systems, and rationalistic efficiency. On the other hand, night vision – thanks to infrared technology – has become a recurring theme in contemporary visual culture, which can be seen across the works of many photographers, video artists, and filmmakers. Indeed, the vast number of thrillers and war movies, shot from the 1990s onwards, served to make the images obtained using these views more mainstream. Furthermore, infrared technologies underpin the fascination with ‘the invisible’, which cuts across modern and contemporary visual culture and which can still be seen through particular uses of infrared, for example in photography
photography  epistemology  visuality  infrared  media_history  media_archaeology 
9 weeks ago by shannon_mattern

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