Qo

A Gaussian image point (image "centre" on the principal ray) in the image plane for diffraction phenomena

Fig. 3.99

q'

A point near Q0 in the diffraction PSF

Fig. 3.99

Qo, Q

Simplified forms (without primes) of Q0, Q

ยง 3.10.5, Eq. (3.458)

Symbol

Meaning

Where defined

Q (suffix)

Pertaining to the PSF of image point Q (Fourier transform theory)

Eq. (3.504)

q

Number of a Seidel aberration (I ... V)

Eq. (3.18)

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