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DOLPi Camera Wins Gadget Freak of the Year Award!

David Prutchi won Design News’ prestigious “Gadget Freak of the Year” award for his development of the DOLPi diy Polarimetric Cameras. David will present the DOLPi project at MD&M West in February 2017.  The award will be presented at the Golden Mousetrap Awards Ceremony during the show. Design News’ Golden Mousetrap Awards are part of UBM’s


diy Long-, Medium, and Short-Wave UV Lamp for Fluorescence Photography

Almost all UV sources used in UV-fluorescence photography work are based on mercury vapor lamps with external filters to narrow down their emissions to a certain range.  Different materials respond to different wavelengths differently, so a single wavelength lamp does not usually suffice to explore the field of UV fluorescence photography.  Most commonly, enthusiasts would


CCD B&W Video Cameras for Near-UV Real-Time Viewing

Real-time viewing of scenes in the near-UV has applications in creative UV photography, astronomy, and forensics . There are a number of CCD video cameras optimized for ultraviolet imaging that use sensors that are specifically designed for this application.  Many of these are based on Sony’s ICX-407BLA CCD chip, which is a Lumogen-coated sensor usable


Near-Infrared (850 nm) Pictures of the Nasca (Nazca) Lines in Peru

My daughter Abigail and I recently took a trip to Peru.  Along my Canon 6D, I took my modified Canon T1i so that I could take UV and IR pictures.  For our flight over the Nasca Lines I built a bracket to hold the cameras side-by-side, and rigged them to fire simultaneously when one of


Jena, Germany – Capital of the Optics Industry

Jena is a town in eastern Germany, which is arguably the World’s capital of the optics industry. Its reputation in optics came in the 19th Century after Carl Zeiss – a microscope maker – met physicist Ernst Abbe, and glass maker Otto Schott. In the 1880s the three formed the basis of today’s premier optical


diy Shortwave UV Image Converters for Solar-Blind and RUVIS Imaging

Imaging in the shortwave ultraviolet spectrum (wavelengths below 300 nm) enables some very exciting applications. Light in these wavelengths is completely invisible (but potentially very harmful) to the unaided eye. I am most interested in a band known as “Solar Blind UV” or SBUV. As shown in the following figure, solar radiation in the 240


iPhone DOLPi Polarization Camera Developed by Paul Wallace

Reader Paul Wallace contacted me to tell me about the DOLPi electro-optic polarization camera that he built for his iPhone.  His ingenious solution makes use of the iPhone’s flashlight to calibrate and synchronize the control of the polarization analyzer (hacked from a welder’s mask as described in the DOLPi whitepaper).

Modified Stock DSLR vs. UVIR FinePix Pro – Which One Wins at UV?

In the film days, police forensic units were the main users of ultraviolet photography. As digital photography started to replace film, forensic units felt left behind the times. In August 2006, Fuji started marketing a UV/IR version of their FinePix S3 Pro DSLR. The camera was aimed primarily at law enforcement, scientific, medical, and fine


d.i.y. High-Power, Swappable-Head, UV/IR/Visible LED Flashlight with Intensity Control

Some time ago I needed a high-intensity UV/IR/visible light source for a work-related industrial inspection project, so I recruited Abigail to help me build a 10W LED flashlight that features swappable UV/IR/visible heads. We decided to document the build since this flashlight would fit nicely in a photographer’s kit for light painting, IR illumination, UV


DOLPi-UI – a diy UVIR/Polarization Imager

I developed the DOLPi-UI filter-wheel-based all-mode camera capable of working in the infrared-visible-ultraviolet range both for imaging and polarimetric analysis. I added a FLIR Lepton® module to extend the camera’s imaging capability (though not polarimetry) to the longwave IR (“thermal” IR). DOLPi-UI is based on the Raspberry Pi NoIR camera, two servos, two filter wheels, a servo