Ophthalmic filter materials

Optical attenuation filter

Optical attenuator apparatus without steep level variation

Optical computer element

Optical computing element

Optical device

Optical device having an optical film with an incident angle the

Optical device with absorption gradient and selective...

Optical device with protected thin optical films

Optical element and display device provided with said optical el

Optical filter

Optical filter

Optical filter aligner/separator and system using the same

Optical filter and image display

Optical filter and method for linearization of optical power...

Optical filter apparatus

Optical filter comprising transparent support and filter layer h

Optical filter having two absorption maximums

Optical filter holder assembly

Optical filter in the form of a rectangular parallelepiped havin