Professor Naomi Halas at Rice University has won a 2017 Weizmann Women and Science Award from the Weizmann Institute in Rehovot, Israel. The biennial award, which was established in 1994,...

Rice University’s Richard Baraniuk has won a five-year fellowship from the U.S. Department of Defense, valued at up to $3 million for “blue sky” basic research that could produce...

A Rice University-led team will conduct further development and field testing of a desalination technology that uses nanoparticles and sunlight to treat water, with help from a $1.7 million grant...

A transgenic zebrafish that produces fluorescent tags in migratory embryonic nerve precursor cells could help lead researchers to the origins of neuroblastoma, a pediatric cancer in which malignant...

Tune into this month's edition of Light Matters for 'Part 1' of an exclusive interview with SPIE CEO, Eugene Arthurs, as he speaks about his upcoming retirement. We’ll also take you to Rochester,...

On this week's show, we talk with the inventors of a laser-based approach to combatting malaria. But first, Managing Editor Laura Marshall's conversation with Rice University spectroscopy and imaging...

-Laser Blood Clotting -Plasmonic Polymer LEDs -Solar Steam This week on Light Matters: A laser-controlled switch turns blood clotting on and off; plasmonics gives a performance boost to polymer LEDs...

On this week’s show, a one-step process produces more efficient solar cells, a two-mode imager better identifies tumors, nanofiber fabrication boosts quantum computing, and we talk with students in a...

Learn how to design luminaires with desired output performance in less time using virtual prototyping. In this webinar, you will learn how to design better and more efficient luminaires with...

This webinar will provide an overview of the state of the art in hyperspectral imaging, discussing the major architectures for hyperspectral imagers together with their performance trade-offs....

Portable and hand-held spectrometers have matured, and in the past few years hand-held devices targeted to the general consumer market have been introduced. This webinar will survey the portable...

Researchers from around the world presented their latest work at “Biophotonic Imaging for Medicine: A Digital Conference.” Presentations focused on a range of light-based imaging and...

The SI unit of luminous flux, equal to the luminous flux emitted per unit solid angle by a standard point source having a luminous intensity of 1 candela. See candela.

A gas lamp used in the early 1900s as a physical standard for measurement of luminous intensity. The Hefner unit was superseded by the candle and then by the candela.

A unit of luminance equal to 1/p candela per square centimeter.

Indication of emission brightness with degree of emission from an optical source.

Controlling and minimizing heat output is desirable in most lighting applications. For example, conventional incandescent light sources are very inefficient with only a small portion of the...

There is a growing market for imaging systems that provides an immediate, slow-motion view of a process that allows one to see events that happen too quickly for the human eye to perceive or...

In the beginning, automated inspection focused on the camera and optics, the algorithms, the interface hardware and the processor. Only rarely was attention paid to the lighting system or lighting...

The wavelength range of commercially available LEDs with single-element output power of at least 5 mW is 360 to 950 nm. Each wavelength range is made from a specific semiconductor material family,...