lucimeter
illuminometer
heliograph
nightscope
photometer
panel light
Fizeau-Foucault apparatus
ometer
absorptiometer
photometrician
photometrograph
light microscope
magnascope
chromascope
scotoscope
microscope
magnifying glass
metra
astrometer
chromometer
retinoscope
dynameter
sensitometer
fluorometer
auxometer
metrochrome
scientific instrument
light meter
optophone
exposure meter
spectroscope
focimeter
goniophotometer
pseudoscope
streak camera
leukometer
horometer
saccadometer
spectropolarimeter
guidelight
booklight
chronoscope
haemadromograph
optical instrument
velometer
transmissometer
orthoscope
vibroscope
carcel
interference microscope