Definition that contains lens system
- camera television equipment consisting of a lens system that focuses an image on a photosensitive mosaic that is scanned by an electron beam
- speed the ratio of the focal length to the diameter of a (camera) lens system
- stigmatic pertaining to a lens or lens system free of astigmatism (able to form point images)
- f number the ratio of the focal length to the diameter of a (camera) lens system
- anastigmat compound lens or lens system designed to be free of astigmatism and able to form approximately point images
- tv camera television equipment consisting of a lens system that focuses an image on a photosensitive mosaic that is scanned by an electron beam
- compound microscope light microscope that has two converging lens systems: the objective and the eyepiece
- focal ratio the ratio of the focal length to the diameter of a (camera) lens system
- anastigmatic pertaining to a lens or lens system free of astigmatism (able to form point images)
- stop number the ratio of the focal length to the diameter of a (camera) lens system