Related by context. Frequent words. (Click for all words.) 59 optics 56 optical 51 hemispherical 51 laser 50 optically 50 aperture 50 monocular 50 illuminator 49 multifocal 49 infrared 49 lenses 49 lens 49 wavefront 48 prisms 48 eyepiece 48 photonic crystal 48 CCD camera 48 diffraction 48 Optical 48 lasers 48 optical fibers 48 isotropic 47 filament 47 magnification 47 infrared IR 47 photonic 47 photodiode 47 waveguide 47 reflector 47 optical fiber 47 coaxial 46 infrared laser 46 femtosecond laser 46 spherical 46 diode 46 Optic 45 laser beams 45 confocal 45 infra red 45 illumination 45 optic nerves 45 photodiodes 45 diodes 45 diode laser 45 apertures 45 electrodes 45 axial 45 windings 45 sensor 45 waveguides 45 planar 45 gratings 45 excitation 44 X ray beam 44 chromatic aberration 44 surface roughness 44 electrode 44 optic nerve 44 photon 44 laser beam 44 fiber optic 44 resonator 44 reticle 44 laser pulse 44 interferometer 44 rotatable 44 transducer 44 millimeter 44 housings 44 wavelength 44 wavelengths 44 ferrite 44 electronic viewfinder 44 CCD sensor 44 laser diodes 44 femtosecond 43 Fiber optic 43 μm 43 #μm [001] 43 electron 43 photosensitive 43 resonators 43 IOLs 43 retinal 43 photons 43 ultraviolet UV 43 interferometry 43 refract 43 multidirectional 43 binocular 43 micrometer 43 fiber optics 43 dielectric 43 dielectrics 43 laser diode 43 VCSEL 43 symmetric 43 corneal 43 electron beam 43 optical components 43 microscopy