The 2023 IODC Shafer Cup Competition

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 2023 IODC Shafer Cup Competition – FAQ

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 …

2021 Illumination Design Problem – FAQ

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 …

The 2021 IODC Shafer Cup Competition – FAQ

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 2021 IODC Shafer Cup Competition

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 …

Submssion Guidelines for the IODC proceedings

Deadline: 13 July 2017 IODC Authors presenting accepted papers are encouraged to submit an expanded Technical Proceedings paper that will be published and mailed to IODC registrants after the Congress.  Visit the links below for complete information. Author Submission & Chair Review System Format Your Manuscript and Sample Templates SPIE Copyright The cost of the Read More …