The International Optical Design Conference (IODC) is set to return in 2027, bringing together global experts in optical science and engineering for five days of innovation and collaboration. The event will take place June 6-10, 2027, at the Norfolk Waterside Marriott in Norfolk, Virginia, USA. This year’s meeting marks an exciting milestone as SPIE assumes Read More …
The Unicorn’s Horn By Sir William Castley, Sir Julius Music des Week, Sir Henning the Wren, Sir John of Kosh, and Lady Lien of StarsThe Illumination Guild ABSTRACT The evil sorcerer Étendue has returned. He has teleported the unicorn to the Land of Unity and separated the unicorn’s horn. The Kingdom of Lambert will wither Read More …
The Yin Yang Lens Background Yin and yang is an ancient Chinese philosophical concept that describes how obviously opposite or contrary forces may actually be complementary, interconnected, and interdependent in the natural world, and how they may give rise to each other as they interrelate to one another. Yin and yang can be thought of as complementary, Read More …
The Yin Yang Lens Frequently Asked (and Unasked) Questions Q. Why did you select the name Yin-Yang Lens? A. The concept of yin and yang as positive and negative aspects of the same object is similar to the goodness and badness of color correction at different wavelengths. Plus, we needed a catchy name, and the Read More …
IODC 2021 will take place but in an all-online form. Many of us are disappointed by that, and we will miss the personal interactions that have been a key part of every IODC. We had hoped to meet in person, but many attendees will still be unable to travel, and the venue was converted to Read More …
The Curse of Prince Lambert Frequently Asked Questions and Problem Clarifications Q. What should I do if my software does not support tm25? A. Please contact your vendor and ask them to contact the illumination guild (illuminationguild@iodc.org). The guild will work with the vendor to provide a file that you can use. Q. Why do Read More …
Deadline extended to May 1st The Curse of Prince Lambert By Sir William Castley, Sir Julius Music des Week, Sir Henning the Wren, and Sir John of Kosh The Illumination Guild Abstract Prince Lambert was a good ruler, though being tired and old, he was cursed by the evil sorcerer Étendue. All that is left Read More …
The Down Under Lens Frequently Asked (and Unasked) Questions Q. Does light really go from right to left south of the equator? A. No, but the concept makes for an interesting Lens Design Problem. Q. Do lens designers south of the equator really use a coordinate system going from right to left? A. No, but Read More …
The Down Under Lens Background All lens designers “up here” (north of the equator) know that light travels from left to right. However, what is not well known is that “down under” (south of the equator), light travels from right to left. This causes problems if a design prescription done “up here” is sent “down Read More …