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Cylindrical lensRefracting telescopeEyepieceTelephoto lensReflecting telescopeCorrective lensFisheye lensFocusing screenCondenserAspheric lensCatadioptric systemOptical microscopeStaring arrayStereoscopeAchromatic lensInverted microscopePolarized 3d systemStereoscopyPentaprismLight field cameraLightboxReflector sightFocal-plane shutterNon-reversing mirrorEye reliefRelay lensTelescopic sightSingle-lens reflex cameraOpaque projectorMeniscus correctorLong-focus lensCamera lensTeleconverterPrismRectilinear lensCamera obscuraApochromatTeleidoscopePinhole occluderLens antennaRangefinder cameraOptical head-mounted displaySlit lampOptical instrumentOptical telescopeAutocollimationPhotographic filterPinhole glassesIntegral imagingSpatial light modulatorTwin-lens reflex cameraParallax barrierBurning glassOne-way mirrorParabolic antennaDouble-gauss lensHead-mounted displayOptical isolatorReading stoneFiducial markerPinhole cameraGrismInfinity mirrorPorro prismAutostereogram3d projectionFrontlightPrime lensProjectorPolarizerHolographic weapon sightPhotoelectric sensorMicrographStereo displayOptical circulatorElectronic viewfinderLaser rangefinderExtension tubeSee-through displayParabolic reflectorDirector's viewfinderLow-angle shotLens flareRear-view mirrorAutofocusPanoramic photographyPosition sensitive devicePhotomaskElectro-optic modulatorStructured-light 3d scannerFresnel lensEinzel lensStereo cameraImage-based lightingRetroreflectorCollimator sightKeratometerDiopter sightThree-mirror anastigmatSearchlight