Related by context. Frequent words. (Click for all words.) 56 interferometric 52 z axis 52 gobo 52 beam splitter 51 RGB LEDs 51 Fresnel 51 photometry 50 collimated 50 illuminators 50 emissivity 49 refractor 49 photometric 49 collimator 49 fluorescent lamp 49 RGB LED 49 photodetector 49 downlight 48 transmissive 48 busbar 48 numerical aperture 48 photocell 48 diffractive 48 HID lighting 47 reflector 47 interferometers 47 fused silica 47 #μm [002] 47 #x#mm [003] 47 opto mechanical 47 photoluminescence 47 CCD camera 47 halide 47 absorbance 47 Fresnel lens 47 viewfinders 47 combiner 47 #um [002] 47 aspheric 47 luminous flux 47 infrared wavelength 46 InGaAs 46 toroidal 46 confocal 46 circular polarization 46 photometer 46 microlenses 46 geodesic 46 hemispherical 46 #.#μm [001] 46 panchromatic 46 halogen bulb 46 Live MOS sensor 46 enlarger 46 illumination 45 fluorescence microscope 45 photodiode 45 PAR# [001] 45 pulsed laser 45 photodiodes 45 LED lamp 45 reflectance 45 compensator 45 spectrographs 45 stereoscopic images 45 coronagraph 45 LED illumination 45 SWNT 45 lense 45 imager 45 uncooled 45 magnifications 45 LUXEON 45 LED luminaire 45 Backlit 44 infrared IR 44 RGB color 44 Light Emitting Diode 44 DUV 44 ellipsoid 44 optical wavelengths 44 #μm [001] 44 Fig. 1A 44 reflective coatings 44 lenses 44 irradiance 44 lumen output 44 UV lamp 44 transmittance 44 TFT displays 44 eyepieces 44 oblique angle 44 photonic crystal 44 nm wavelength 44 3mm thick 44 contrasty 44 diffracted 44 near infrared NIR 44 FOV 44 specular 44 3CCD 44 submillimeter