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Convex lensAbbe condenserOptical axisAberrationAchromatic lensAplanatSpherical aberrationScheimpflug principleLensObjectiveImage circleCamera lensCondenserRefracting telescopeOptical aberrationOptical lens designStigmatismNormal lensDepth of focusAchromatic telescopeAstigmatismMeniscus correctorOptical powerRectilinear lensAngle of incidenceFocusTelecentric lensApertureAbbe refractometerApertometerVisual angleApochromatAiry diskEntrance pupilBarlow lensSchmidt corrector platePhotographic lens designDefocusFocal lengthOptical instrumentCircle of confusionField lensPhase angleCylindrical lensSuperlensAutocollimationTelephoto lensEye reliefMagnetic lensCaustic curveOpticsEyepieceOphthalmometerDouble-gauss lensPupil functionOpticOptical transfer functionReflecting telescopePrime lensDoubletStaring arrayFocusing screenSpatial filterDiaphragmChromatic aberrationHyperfocal distanceRelay lensFraunhofer diffraction equationCalibrated focal lengthCritical angleConformal opticsAbbe numberGaussian opticsOptical microscopeRangefinder cameraThin lensDepth of fieldHypercentric lensAdaptive opticsGhost imageCollimatorPetzval field curvatureLong-focus lensPhotographic filterToric lensOptical coatingSingle-lens reflex cameraAutofocusDeformable mirrorDiffraction gratingFisheye lensFraunhofer diffractionGhostKeratometerHyperlensComaAngular resolutionThree-mirror anastigmatFresnel zone platePentaprism