Diffraction grating recording medium

Diffraction grating with reduced polarization-dependent loss

Diffraction grating with reduced polarization-dependent loss

Diffraction grating with reduced polarization-dependent loss

Diffraction grating, light source unit applying the same...

Diffraction grating, method of fabricating diffraction...

Diffraction grating, method of making and method of using

Diffraction grating-based encoded micro-particles for...

Diffraction grating-based encoded micro-particles for...

Diffraction grating-based encoded particle

Diffraction grating-based wavelength selection unit

Diffraction grating-based wavelength selection unit having...

Diffraction lens

Diffraction optical device and optical system including same

Diffraction optical element

Diffraction optical element

Diffraction optical element

Diffraction optical element and transfer mold therefor

Diffraction type filter having a wave length selectivity

Diffraction type filter having a wavelength selectivity