Optical Lens Design with Native Gradient Index Support – reTORT Ray Tracer 2.0.27 ReleasedCreated OnMarch 20, 2020byExH Print You are here: Main News Optical Lens Design with Native Gradient Index Support – reTORT Ray Tracer 2.0.27 Released ← All TopicsOptical Lens Design with Native Gradient Index Support – reTORT Ray Tracer 2.0.27 Released