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Transfer of Light Energy in the Optical System
The Light Source and Its Power Supply
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absorbance absorption adjustment angle of incidence aperture angle aperture area bandwidth beam splitter blackening calibration cathode central wavelength centre Chap chromatic collector condenser condenser-aperture diaphragm correction curves dark current diameter diffuse reflection dispersing element distance error exit pupil expressed fluorescence fraction given glass plate glass-plate reflector hence illuminating system interaction factor interference filters intersect lamp layer lenses light beam light cone linear dispersion luminous surface luminous-field diaphragm magnification number marginal rays maximum measuring result measuring value microscope modules monochromatising device monochromator Note numerical aperture operation optical axis optical flux optical system optical train optical-path difference parameters parasitic image pass band photocathode photometer diaphragm photometric beam photometric field photosensor plane polarising devices polars primary image prism quantity radiant flux ratio reference material reflected light refractive index Sect sensitivity solid angle specimen spectral range specular reflectance stage object standard thickness transmittance transmitted light voltage wavelength width