Author: Donna
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Fresnel Lenses and the Oculus Rift CV1
The new consumer version of the Oculus Rift has just been released and there’s been a lot of buzz about the new hybrid fresnel lenses and how they compare with those in the HTC Vive Pre. Based on the reviews, these may be different from the lenses that I demoed at CES and apparently, the screen door effect is very minimal. Here’s…
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IODC 2017 to be held in Denver, CO
The International Optical Design Conference (IODC) will be held next year in nearby Denver, CO! Represent!
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360 Video and VR at CES 2016
Seemingly, all possible configurations of multiple video cameras slapped together to create 360-deg video were on display at CES, including the wheeled contraption below from Radiant Images that I came across at VR Fest and the more compact Nikon KeyMission 360, which was kept in a closely-guarded case at the Las Vegas Convention Center. The…
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David Pogue talks optics at CES 2016
One of the free talks at CES was given by David Pogue, in which he shared some very interesting lifehacks from his “Pogue’s Basics” series books. His tip for when you’re having trouble reading distant signage and have forgotten your glasses is to simply make a fist and peer through the tunnel created by your…
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Blue Light, Circadian Vision, and Life after Dark
The master circadian clock, located in the brain’s suprachiasmatic nucleus (SCN), helps us sync to the sun-earth 24-hr cycle, for wakefulness during the day and a good night’s sleep after dark. Blue light (i.e., ~460-480 nm), detected by the eye’s melanopsin retinal ganglion cells (mRGCs), is one of the SCN’s primary environmental cues. It tells the…
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A new edition of Introduction to Radiometry and Photometry has been published
Congratulations to Ross McCluney! I’ve just received a gratis copy as thanks for having modestly contributed to the chapter on ray tracing. Ross has made a lot of updates to his classic 1994 text and I’m looking forward to reading it.