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Flashcards in Optics Deck (239):
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What is the total lateral magnification of a system of lenses?

The product of the magnifications for each lens: 58

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What is the lateral magnification for an optical system with two surfaces?

The product of the mangification for each surface: 63

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By what expression can back vertex power be given?

F_1 = first surface powerF_2 = second surface powert = thickness of lens in metersn = index of refraction of lens 69

By what expression can front vertex power be given? 70

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By what expression is Equivalent Power of a thick lens given? 72

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What are the locations of the principal planes with regard to the apices of the first and second surfaces (A_1 and A_2)? 76

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What is the vergence relationship for accommodation? 103

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What is the expression for power of a cylindrical lens in an oblique meridian?

If theta is the angle between the oblique meridian and the cylinder's axis meridian: 125

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What is a Fresnel prism?

A thin, light, easily changed series of prisms that can be cut to shape and applied (with adhesive) directly to the surface of spectacle lenses. 146

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How does a diffraction pattern (i.e. the distribution of light) formed on the retina from a monochromatic source change with wavelength and pupil diameter?

where theta (radians) is the radius of the Airy's disk, lambda is the wavelength of light, and d is the pupillary diameter.Airy's disk radius rises with longer wavelength and smaller pupillary diameter. 156

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How can the effective magnification at 25cm be computed? 175

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What is the angular magnification of a Galilean or Keplerian telescope in terms of lens powers? 183

What is the angular magnification of a Galilean or Keplerian telescope in terms of tube length? 184

What is the angular magnification of a Galilean or Keplerian telescope in terms of entrance and exit pupil diameters? 185

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What is the equation for magnification due to power?

where F_v is the back vertex power of the lens and d is the vertex distance 192

What is the equation for mangification due to lens shape?

where t is the thickness, n is the refractive index, and F_1 is the front surface power. 193

What is the equation for spectacle mangification? 194

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What is the lateral magnification of a mirror in air? 215

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What proportion of light rays orthogonal to a transparent surface are reflected by that surface?

where n is the RI of the medium surrounding the surface (generally air) and n' is the RI of the surface 221

What relationship between the RI of an anti-reflection coating and the RI of a lens maximizes the destructive interference of reflected light?

This is derived by setting the proportion of light reflected from the coating equal to the proportion of light reflected from the lens. 222

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What is the Coddington shape factor?

A measure of the amount of spherical aberration of a lens, based on the radii of curvature of its front and back surfaces. 228

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