Optics Notation

x, y, z rectangular coordinates p, 9, z cylindrical coordinates

X wavelength of a monochromatic propagation of light v frequency of a monochromatic propagation of light

D clear aperture diameter rm semi-radius of clear aperture f, f' focal length of a system in the object and image space respectively

Q focal ratio, or f-ratio n, n', N index of refraction of a medium i, i' conjugate incidence and emerging angles

R radius of curvature of axisymmetric optical surface c curvature of an axisymmetric optical surface (the velocity of light in vacuum is also denoted c)

cx, cy principal curvatures of an optical surface

CP Petzval curvature k conic constant of conicoid optical surface u, u' conjugate aperture angles n, n' conjugate ray heights i) normalized ray height q field angle

(pmax maximum field angle z, z' usual object and image conjugate distances

Z, Z' Newton object and image conjugate distances

M transverse magnification

K optical power

H Lagrange invariant

E etendue invariant

T telephoto effect

W[4] aberration wavefront function of third order theory p, 9, n normalized radius, azimuth angle and image height of a wavefront aberration function

Sj to SV Seidel's five coefficients of third order theory zn,m(p, d) cylindrical coordinate representation of a wavefront mode or an optical surface. Also simply denoted znm Z, Zopt representation of a wavefront mode or an optical surface in active optics coaddition law co angular frequency of a wave propagation k wave number

S Strehl intensity ratio

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