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The Gaussian Theory of Lenses
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aberration afocal Airy disk angle of incidence angular field aperture stop axial beam splitter bright camera collimator curvature curved cylinder diffraction diffusing diopters distant object distortion emerging ray entrance pupil equal equations erector example exit pupil eyepiece F-number fiber field lens film flux focal length focal plane focal point focus form an image front given glass height illumination image magnification indicated in Fig infinity inserted instrument intensity lens aperture lens axis lenses light located luminance magnifying power measured meridional ray mounted moved negative numerical aperture object and image object space objective lens oblique beam parallel beam paraxial ray perpendicular photocell photographic plate polarized positive principal ray prism projection lens projector rangefinder ratio ray entering reflected refractive index resolving power rotating screen shown in Fig slide slit slope spherical stilb subtense surface telecentric telephoto thick thin lens tilted transmitted tube wavelength zoom