Using polynomial curve fitting for spherical mirror ultra-short throw
Input Parameters
projector to screen distance
width / height ratio
projection width
projection height
✓ All values synchronized
Active Formulas:
Height = -0.02971·d² + 4.7875·d + 24.9276
Offset_Ratio = -0.000326·d² + 0.041963·d – 1.003578
Width = Height × Aspect_Ratio
Height = -0.02971·d² + 4.7875·d + 24.9276
Offset_Ratio = -0.000326·d² + 0.041963·d – 1.003578
Width = Height × Aspect_Ratio
Calculated Output
Projection Distance
77.0cm
Projection Width
350.0cm
Projection Height
220.0cm
Height Offset
65.0cm
Offset Ratio
0.2955
Throw Ratio
0.2200