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🔍 Lens Maker Equation Calculator
Calculate focal length and lens parameters using the lens maker equation
📊 Lens Maker Equation
1/f = (n-1)(1/R₁ - 1/R₂ + (n-1)d/(nR₁R₂))
Where f is focal length, n is refractive index, R₁,R₂ are radii of curvature, d is lens thickness
Focal Length:
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Lens Power:
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Lens Type:
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Method Used:
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💡 Tips & Information
- Positive R = convex surface, Negative R = concave surface
- Thin lens: d ≈ 0, so thickness term is negligible
- Lens power P = 1/f (in diopters when f is in meters)
- Converging lens: positive focal length
- Diverging lens: negative focal length