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STEMORIA scientific instrument
Explore the ideal thin-lens equation, image distance, magnification, and image classification.
01
Manipulate
02
Measure
03
Interpret
Scientific viewport
Measured model and controls
Move the object and change lens power while principal rays, focal points, image location, orientation and magnification update from the thin-lens equation.
Interactive optical bench
Object distance
Image distance
Magnification
Image
Thin-lens equation
1/f = 1/dₒ + 1/dᵢ
m = −dᵢ/dₒ
1/f = 4 m⁻¹
1/dₒ = 1.6667 m⁻¹
1/dᵢ = 2.3333 m⁻¹
Optical measurements
f
dₒ
dᵢ
m
Interpretation
A positive image distance places a real image on the opposite side of the lens; a negative image distance places a virtual image on the object side. The sign of magnification indicates orientation, while its magnitude gives the image-size ratio.