LED analyser
luxometer
light meter
optics
spectrogoniometer
aperture
optical
luminoscope
light source
leukometer
light
goniophotometer
photometer
flashgun
optical glass
oscillometer
optical spectrum
spectroradiometer
characteristic
multiplier
photophore
sunphotometer
photonephelometer
phacometer
retinoscope
fluorosensor
spectrophotofluorometry
optical bench
lamplighter
conductometer
LEDs
electroluminescent
astrophotometer
diffusor
adaptometry
auxetometer
aberrometer
diffuser
strobe lighting
chromascope
blinkenlights
polymeter
auxometer
lucimeter
leadlighting
flare
quasioptical
organic electroluminescent display
apodizer
telescope
illuminometer
hand-basher
photocounter
panel light
dynactinometer
refractometer
photocolorimeter
reflecting
digital electronics
electric eye
spider box
diopter
digital-to-analog converter
luminous flux
rangefinder
metrochrome
startracker
photoluminesce
laser pointer
dioptre
astrometer
dispersometer
densitometer
Edison bulb
jeweler's glass
spectropotentiometry
neon glow lamp
photometry
optoelectronics
abatjour
exposure meter
lenslet
phosphoroscope
adaptometer
holophote
optical device
autorefractometer
photoplotter
ray tracing
rangeability
starter
spectropolarimeter
analog-to-digital converter
reticle
achromatic