Lens Explainer (Demo)

The three numbers, demonstrated

Air tier · concept for review

PADC · cured CR-39

1.60Refractive index

41Abbe value

1.21Specific gravity

Refractive index · 1.60

How sharply the lens bends light. A higher number bends more, so the same lens can be made thinner.

Abbe value · 41

How little the lens splits light into colours. Higher is cleaner; low fans the edges into fringing.

Specific gravity · 1.21

How heavy the material is for its size. Lower is lighter on your face across a full day.

Concept prototype for review. Not linked in navigation.