Exam (elaborations)
OPTOM 316 Predicted Questions and CORRECT Answers
- Course
- Institution
Measurement of lens surfaces. - -Curvature (R): reciprocal of radius (m^-1), R=1/r. -Sagitta (S): distance between a point on a circle and the midpoint of the chord, s=r-(√r^2- h^2). Approximate formula: s=h^2/2r (only used when s is much smaller than r). Calculation of lens surface power. - -...
[Show more]