Optical encoder having high resolution
Optical filter and method of manufacturing thereof
Optical filter tuning apparatus and an optical filtering method
Optical filter with little variation in chromatic dispersion
Optical functional element comprising photonic crystal
Optical gating system using moiré effect
Optical grating and a method of fabricating an optical grating
Optical grating and encoder
Optical grating and method for the manufacture of such an...
Optical grating and method of fabricating an optical grating
Optical head
Optical head
Optical head device including an optically anisotropic diffracti
Optical head device including an optically anisotropic...
Optical identification element having non-waveguide...
Optical imaging head having a multiple writing bean source
Optical information carrier having diffractive features and diff
Optical information processing unit
Optical instrument and optical element providing expanded...
Optical instrument and optical element thereof