| ReturnTo Theme-Group-Choice | Onelevelup |
| 2H099 | Other optical system, apparatus, interferance of the light and control of the color | |
| G02B27/00 -27/64;G02F1/21-1/25 | ||
| G02B27/28;27/28@A;27/28@Z | AA | AA00 APPLICATIONS |
AA01 | AA02 | AA05 | |||||||
| . Optical communications | . . Optical fibre amplifiers | . Optical pick-ups | ||||||||||
| AA11 | AA12 | AA17 | ||||||||||
| . Display devices | . . Liquid crystal projectors | . Laser processing | ||||||||||
| BA | BA00 DEVICES |
BA01 | BA02 | BA03 | BA05 | BA06 | BA07 | BA09 | ||||
| . Optical isolators | . . Bulk type | . . Waveguide type | . Optical circulators | . . Bulk type | . . Waveguide type | . Illuminating optical systems | ||||||
| BA13 | BA17 | |||||||||||
| . Depolarisers | . Light splitting or combining optical systems | |||||||||||
| CA | CA00 POLARISING ELEMENTS |
CA01 | CA02 | CA05 | CA06 | CA07 | CA08 | |||||
| . using reflection | . . Dielectric multi-layer films | . Double refraction crystals | . . Prisms | . . Quarter wavelength plates | . . Half wavelength plates | |||||||
| CA11 | CA13 | CA17 | ||||||||||
| . Polarising plates or polarising films | . Optical fibres | . Diffraction gratings | ||||||||||
| DA | DA00 PURPOSE |
DA01 | DA03 | DA05 | DA07 | DA09 | ||||||
| . Stray light prevention or removal of reflected light | . Temperature compensation | . Assembly fastening | . Position adjustment | . Adjustment of the amount of light |