MentorOptiX
Interactive Optics Learning Tools
Refraction & Reflection Visualizer (2D)
How to use this tool
- Drag Source and Direction to control the incident rays.
- Drag the Interface and Normal to explore geometric effects.
- Adjust refractive indices to explore Snell’s law, Fresnel power split, and TIR.
- Mouse wheel: Pan view / Ctrl + Wheel: Zoom in/out.
Incident / Reflected
Refracted
Controls
Adjust parameters. Readout stays visible on the right.
Both
Unpolarized
S (TE)
P (TM)
31
3
0
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For educational purposes only. Not intended for high-precision engineering.
Live Readout
Updates instantly as you drag or change sliders.
Incident angle (center)
°
Reflection: —
Refraction angle (center)
—
—
Critical angle
—
—
Power split (unpolarized)
—
—
Fresnel power (unpolarized) vs. incident angle
Curves show R% and T% for the current (nᵢ → nₜ) direction. The marker follows the current center-ray incident angle.
R%
T%
Brewster Angle (Rp=0)
Critical Angle (TIR)