Interference No. 104,649
Page No. 9
90
9a
3a-/ QJ
FIG. 5
As shown by Figure 5, rays 3a and 4a are totally internally reflected because their incident angles
relative to normal N to the interface equal or exceed the critical angle. In contrast, rays la and 2a
pass out of medium a and into medium b because the angle of incidence at the interface between
medium a and medium b is less than the critical angle. (Kcagy'969, col. 7, lines 36-42).
F19. Keagy Figure 3 is said to depict an "optical ray diagram showing how the working image
is formed." (Keagy'969, col. 4, lines 66-67). Keagy Figure 3 is provided below:
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Last modified: November 3, 2007