At the time, the typical way to view images in 3D was with cardboard-stock anaglyph glasses—the type with different-colored lenses: one red, the other green, cyan, or blue.

The idea is the same as the old-school red and blue polarized glasses used at 3D movies, but the researchers used green instead of red because the bugs see that color much better.

A corresponding pair of 3D eyeglasses directs the images to the appropriate eye (see 3D glasses). ... Using the anaglyph color method, the audience wore paper glasses with red and green lenses.

In this case, green lenses were used instead of red because praying mantises have trouble seeing red light. It worked! With the glasses on, the mantises would go for bugs they were shown in 3D.

By today’s 3D standards, the effect created by donning a pair of red and blue cardboard glasses is primitive, but as crude as they may now seem, it’s essentially the same anaglyph 3D ...

The “golden era” for 3D took place between 1952 and 1954, ... Yet the production costs were high and audiences were unconvinced by the plastic glasses that had one red lens and one green.

They aren't those red and blue or red and green 3D glasses ... Hi Tech & Innovation weblog. Oct 29, 2009 11. 0. Samsung Begins Mass Producing 3D TV Panels ...