Key Features

  • Features a user-friendly format that facilitates the review process, with practical examples throughout.
  • Provides a convenient review of optical formulas and basic math problems.
  • Begins each chapter with a brief discussion of the topic, then proceeds with exercises and examples; answers are provided at the end of the book.

Table of Contents

Section I: Math Review
Signed Numbers
Calculators
Significance and Precision
Rounding
Conversions
Sine, Cosine, Tangent
Scientific Notation
Section II: Theory of Light
Properties of waves
Wave formula
Diffraction
Properties of Rays
Vergence
Illumination
Absorption, reflection, refraction
Law of reflection
Laws of refraction
Index of refraction
Snell's law
Critical angle
Apparent Depth
Apparent Thickness
Lateral Displacement
Dispersion and Abbé number
Section III: Lenses
Refraction through a lens
Focal length formula
Diopters
Lens surfaces
Lens types
Radius of curvature
Surface power formula
Nominal power formula
The lensmaker's equation
Cylinders, compound lenses
Lens Meridians
Optical cross
Flat transposition
Cross cylinder transposition
Hand neutralization
Prescription notation
Circle of least confusion
Refractive errors
Types of Ametropias
Regular Astigmatisms
With and Against the Rule Astigmatism
Power in oblique meridians
Vertex distance and effective power
Effective power
Compensated power
Back and Front Vertex Power
Section IV: Prisms
Prism definitions
Dispersion of Light by a Prism
Object Displacement by a Prism
Prism Power
Segment Styles
Section V: Surfacing and Finishing
Lens and frame measurements
Boxing System
Datum System
Frame Center Distance
Decentration
Effective Diameter
Segment Height and Drop
Segment Inset and Total Inset
Minimum blank size
Base curves
Toric Transposition
Refractive Power Formula
Sagittal depth and lens thickness
Prism thickness
Section VI: Advanced Lens Formulas
Martin's formula for lens tilt
Spectacle Magnification
Angular Magnification <

Details

No. of pages:
264
Language:
English
Copyright:
© 2005
Published:
Imprint:
Butterworth-Heinemann
Print ISBN:
9780750675048
Electronic ISBN:
9781455727780

About the author

Ellen Stoner

Affiliations and Expertise

Former Director of Opticianry Program, Durham Technical Community College, Durham, NC