16 September 1980 Alternate Surface Intersection Points
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Proceedings Volume 0237, 1980 International Lens Design Conference; (1980) https://doi.org/10.1117/12.959079
Event: 1980 International Lens Design Conference, 1980, Oakland, United States
Two optical ray trace conventions are addressed. The choice of ray-surface intersection has been based on convention rather than examination of the situation. The problem can be handled automatically by specifying an active side to a surface and then associating a direction to the surface normal based on that active side. The two solutions obtained by solving the equation of the line and surface can then be tested by scalar product with the normal. The reflection algorithm is restructured to eliminate the need for a negative index and the concept of rays traveling in negative space.
© (1980) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Patrick S. Cheatham, Patrick S. Cheatham, } "Alternate Surface Intersection Points", Proc. SPIE 0237, 1980 International Lens Design Conference, (16 September 1980); doi: 10.1117/12.959079; https://doi.org/10.1117/12.959079


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